2008 Buick Lucerne Electrical Switch & Relay Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

This page lists 213 electrical switch & relay parts for the 2008 Buick Lucerne, across 50 part types, covering both the 3.8L V6 and the 4.6L V8. Every part shows its brand, manufacturer part number and fitment notes.

On the 2008 Buick Lucerne, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 43 parts of the 213 listed are Power Seat Switch (22 parts), Accessory Power Relay (11 parts) and Power Window Switch (10 parts). The other 47 part types cover the remaining 170 parts.

A/C Compressor Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
20AMP4-TerminalMultiuseControl Relay
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STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
Clutch Cut-Off Relay
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FOUR SEASONS Fits: 4.6L V8 36135
🇺🇸 US 🇨🇦 CA
Compressor Clutch Relay
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HELLA Fits: 4.6L V8 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
Fitment notes — HELLA 933332601
5-pin connector
Clutch Relay
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ROSTRA Fits: 4.6L V8 600040
🇺🇸 US 🇨🇦 CA
Connector Shape: Square
Fitment notes — ROSTRA 600040
Connector Shape: Square
Cut-Out Relay
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WELLS Fits: 4.6L V8 1R3536
🇺🇸 US 🇨🇦 CA
Cut-Out Relay
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This table covers the relays that control the A/C Compressor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

A/C Compressor Time Delay Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith Resistor
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This table covers the relays that control the A/C Compressor Time Delay circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

A/C Pressure Safety Switch

Brand Part Number Markets Notes Buy
VEMO Fits: 4.6L V8 V40730008
🇺🇸 US 🇨🇦 CA
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This table covers the A/C Pressure Safety switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

A/C Refrigerant Pressure Switch

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 1551343
🇺🇸 US 🇨🇦 CA
without Circuit
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FOUR SEASONS Fits: 4.6L V8 20915
🇺🇸 US 🇨🇦 CA
Pressure Switch
Fitment notes — FOUR SEASONS 20915
Pressure Switch
Transducer
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GPD Fits: 4.6L V8 1711513
🇺🇸 US 🇨🇦 CA
Pressure Transducer
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UAC Fits: 4.6L V8 SW10093C
🇺🇸 US 🇨🇦 CA
Pressure Transducer
Fitment notes — UAC SW10093C
Pressure Transducer
Transducer
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WELLS Fits: 4.6L V8 1S8929
🇺🇸 US 🇨🇦 CA
Clutch Cycle and Fan ControlCut-Off
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This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

A/C System Relay

Brand Part Number Markets Notes Buy
UAC Fits: 4.6L V8 RE8423C
🇺🇸 US 🇨🇦 CA
Replaces 5 Contact Relay
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UAC Fits: 4.6L V8 RE1014C
🇺🇸 US 🇨🇦 CA
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This table covers the relays that control the A/C System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Accessory Delay Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 1581106
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 1581106
Black
Black5-TerminalSPDT 280 Mini, Hi/LowNot Shrouded
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GM GENUINE Fits: 4.6L V8 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
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This table covers the relays that control the Accessory Delay circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Accessory Power Relay

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 4.6L V8 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
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STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 RY604
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 5black
Fitment notes — STANDARD MOTOR PRODUCTS RY604
Terminal Quantity: 5black
blackwith 5 blade terminals
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STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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BWD/NIEHOFF Fits: 4.6L V8 R6332
🇺🇸 US 🇨🇦 CA
Accessory Relay4 blade terminal
Fitment notes — BWD/NIEHOFF R6332
Accessory Relay4 blade terminalPower
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FAMOUS BRAND Fits: 4.6L V8 RAA1791
🇺🇸 US 🇨🇦 CA
Accessory Relaywith 4 Terminals
Fitment notes — FAMOUS BRAND RAA1791
Accessory Relaywith 4 TerminalsPowerSquare Type
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HELLA Fits: 4.6L V8 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
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ROSTRA Fits: 4.6L V8 600014
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600014
Amperage Rating: 30 AmpereConnector Gender: MaleConnector Shape: Square
with 5 Blade Pin Terminals
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ROSTRA Fits: 4.6L V8 600096
🇺🇸 US 🇨🇦 CA
with 4 Blade Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY827
🇺🇸 US 🇨🇦 CA
Functions: Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY827
Functions: Relay
with 4 Blade Terminals
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WELLS Fits: 4.6L V8 1R1055
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AMounting Hardware Included: No
Fitment notes — WELLS 1R1055
Amperage Rating: 30 AMounting Hardware Included: No
with 5 TerminalsSquare Type
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WELLS Fits: 4.6L V8 1R1946
🇺🇸 US 🇨🇦 CA
Mounting Hardware Included: No
Fitment notes — WELLS 1R1946
Mounting Hardware Included: No
with 4 TerminalsSquare Type
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This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

AIR / Smog Pump Relay

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 4.6L V8 933332531
🇺🇸 US 🇨🇦 CA
4-Pin ConnectorPlug: B
Fitment notes — HELLA 933332531
4-Pin ConnectorPlug: BColor: Black
PZEV California Emissions NU6
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STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 RY255
🇺🇸 US 🇨🇦 CA
Amperage Rating: 70 AContinuous Duty: YES
Fitment notes — STANDARD MOTOR PRODUCTS RY255
Amperage Rating: 70 AContinuous Duty: YESFunctions: Multi-Function Relay
50 Amps
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GM GENUINE Fits: 4.6L V8 13468936
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY1760
🇺🇸 US 🇨🇦 CA
Functions: Coolant Fan Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY1760
Functions: Coolant Fan Relay
50 Amps
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY1762
🇺🇸 US 🇨🇦 CA
30 Amps
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WELLS Fits: 4.6L V8 1R3319
🇺🇸 US 🇨🇦 CA
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This table covers the relays that control the AIR / Smog Pump circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Blower Motor Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith Resistor
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HELLA Popular Fits: 4.6L V8 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
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ACDELCO Fits: 4.6L V8 D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
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FOUR SEASONS Fits: 4.6L V8 36010
🇺🇸 US 🇨🇦 CA
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HELLA Fits: 4.6L V8 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
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ROSTRA Fits: 4.6L V8 600060
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 Ampere
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY1757
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.6L V8 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
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This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Brake Light Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20AMP4-TerminalMultiuseSwitch Relay
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This table covers the relays that control the Brake Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Clutch Pedal Position Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
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This table covers the relays that control the Clutch Pedal Position circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Computer Control Relay

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.6L V8 600060
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 Ampere
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY1757
🇺🇸 US 🇨🇦 CA
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This table covers the relays that control the Computer Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Cornering Lamp Relay

Brand Part Number Markets Notes Buy
HOLSTEIN Fits: 4.6L V8 2RSW0042
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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This table covers the relays that control the Cornering Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Cruise Control Switch

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 15824107
🇺🇸 US 🇨🇦 CA
LeftTITANIUM
Fitment notes — GM GENUINE 15824107
LeftTITANIUMStandard Wheel (NK5), Leather Wrapped Steering Wheel (NP5),Interior Trim Color (83I)
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WELLS Popular Fits: 4.6L V8 1S10109
🇺🇸 US 🇨🇦 CA
Grey
Fitment notes — WELLS 1S10109
Grey
Light Gray, with Leather Wrapped Steering Wheel
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ROSTRA Fits: 4.6L V8 660853
🇺🇸 US 🇨🇦 CA
Light Graywith Leather Steering Wheel
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 CCA1097
🇺🇸 US 🇨🇦 CA
Gray
Fitment notes — STANDARD MOTOR PRODUCTS CCA1097
Gray
with Leather Steering
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 DS2156
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS DS2156
Black
with Leather Steering
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 CCA1089
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS CCA1089
Black
with Heated Wood Steering Wheel
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WELLS Fits: 4.6L V8 1S10107
🇺🇸 US 🇨🇦 CA
Dark Brown, with Leather Wrapped Steering Wheel
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WELLS Fits: 4.6L V8 1S10115
🇺🇸 US 🇨🇦 CA
Black, with Heated Wood Steering Wheel
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This table covers the Cruise Control switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Daytime Running Light Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
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HOLSTEIN Fits: 4.6L V8 2RSW0042
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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This table covers the relays that control the Daytime Running Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Dimmer Switch

Economy

Brand Part Number Markets Notes Buy
SHEE-MAR Fits: 4.6L V8 SM279C
🇺🇸 US 🇨🇦 CA
without Heated Washer Nozzles
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Standard Replacement

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.6L V8 640078
🇺🇸 US 🇨🇦 CA
without Heated Windshield Washers
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 CBS1423
🇺🇸 US 🇨🇦 CA
without HEATED WINDSHIELD
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WELLS Fits: 4.6L V8 1S8338
🇺🇸 US 🇨🇦 CA
Indicator Markings Color: White
Fitment notes — WELLS 1S8338
Indicator Markings Color: White
without Heated Washer System
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This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Dome Light Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
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This table covers the relays that control the Dome Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Driving Light Relay

Brand Part Number Markets Notes Buy
HOLSTEIN Fits: 4.6L V8 2RSW0042
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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This table covers the relays that control the Driving Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Fog / Driving Lamp Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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BWD/NIEHOFF Fits: 4.6L V8 R6332
🇺🇸 US 🇨🇦 CA
Fog Lamp Relay
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HOLSTEIN Fits: 4.6L V8 2RSW0042
🇺🇸 US 🇨🇦 CA
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ROSTRA Fits: 4.6L V8 600096
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY827
🇺🇸 US 🇨🇦 CA
Functions: Relay
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This table covers the relays that control the Fog / Driving Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Fog / Driving Lamp Switch

Brand Part Number Markets Notes Buy
WELLS Popular Fits: 4.6L V8 1S10156
🇺🇸 US 🇨🇦 CA
Blackwith Lane Departure Warning System
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WELLS Popular Fits: 4.6L V8 1S10145
🇺🇸 US 🇨🇦 CA
Blackwithout Lane Departure Warning System
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ROSTRA Fits: 4.6L V8 650872
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650872
with Lane Departure Warning Systemwith Fog LightsLight Beige
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ROSTRA Fits: 4.6L V8 650784
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650784
with Lane Departure Warning Systemwith Fog LightsTan
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ROSTRA Fits: 4.6L V8 650792
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650792
with Lane Departure Warning Systemwith Fog LightsGray
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ROSTRA Fits: 4.6L V8 650864
🇺🇸 US 🇨🇦 CA
with Fog Lightswithout Lane Departure Warning System
Fitment notes — ROSTRA 650864
with Fog Lightswithout Lane Departure Warning SystemTan
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ROSTRA Fits: 4.6L V8 651039
🇺🇸 US 🇨🇦 CA
with lane departure warning systemwith fog lights
Fitment notes — ROSTRA 651039
with lane departure warning systemwith fog lightsblack
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ROSTRA Fits: 4.6L V8 651040
🇺🇸 US 🇨🇦 CA
without Lane Departure Warning SystemLight Beige
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This table covers the Fog / Driving Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Fuel Pump / Circuit Opening Relay

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 4.6L V8 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
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WELLS Popular Fits: 4.6L V8 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
with 4 Terminals
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ROSTRA Fits: 4.6L V8 600015
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600015
Amperage Rating: 30 AmpereConnector Shape: Rectangle
with 5 Blade Pin Terminals
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ROSTRA Fits: 4.6L V8 600072
🇺🇸 US 🇨🇦 CA
with 4 Blade Pin TerminalsShort Design
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ROSTRA Fits: 4.6L V8 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
with 4 Blade Pin TerminalsLong Design
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY517
🇺🇸 US 🇨🇦 CA
Functions: Relay
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WELLS Fits: 4.6L V8 1R1059
🇺🇸 US 🇨🇦 CA
Mounting Hardware Included: NoVoltage: 12.0 VDC
Fitment notes — WELLS 1R1059
Mounting Hardware Included: NoVoltage: 12.0 VDC
with 5 Terminals
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This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Headlamp Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Variable Time Damping Chassis (F55)20 Amp4-TerminalMultiuse
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GM GENUINE Popular Fits: 4.6L V8 D1780C
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE D1780C
Black
Black35AMP5-Way, Hi-Power, with resistor, Unshrouded, Micro, Code 78665 TerminalHigh Current Micro 280
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ROSTRA Fits: 4.6L V8 600015
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AmpereConnector Shape: Rectangle
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY232
🇺🇸 US 🇨🇦 CA
Amperage Rating: 35 AConnector Gender: Male
Fitment notes — STANDARD MOTOR PRODUCTS RY232
Amperage Rating: 35 AConnector Gender: MaleFunctions: Multi-Function Relayblack
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WELLS Fits: 4.6L V8 1R1059
🇺🇸 US 🇨🇦 CA
Mounting Hardware Included: NoVoltage: 12.0 VDC
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This table covers the relays that control the Headlamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Headlamp Switch

Brand Part Number Markets Notes Buy
WELLS Popular Fits: 4.6L V8 1S10145
🇺🇸 US 🇨🇦 CA
Blackwith Fog Lights
Fitment notes — WELLS 1S10145
Blackwith Fog Lightswithout Lane Departure Warning System
View on
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ROSTRA Fits: 4.6L V8 650872
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650872
with Lane Departure Warning Systemwith Fog LightsLight Beige
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 HLS1249
🇺🇸 US 🇨🇦 CA
without Fog Lightswith Lane Departure Warning System
Fitment notes — STANDARD MOTOR PRODUCTS HLS1249
without Fog Lightswith Lane Departure Warning SystemColor Code Cocoa
View on
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WELLS Fits: 4.6L V8 1S10156
🇺🇸 US 🇨🇦 CA
Blackwith Fog Lights
Fitment notes — WELLS 1S10156
Blackwith Fog Lightswith Lane Departure Warning System
View on
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WELLS Fits: 4.6L V8 1S10154
🇺🇸 US 🇨🇦 CA
Graywithout Fog Lights
Fitment notes — WELLS 1S10154
Graywithout Fog Lightswith Lane Departure Warning System
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This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Horn Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 D1780C
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE D1780C
Black
Black35AMP5-Way, Hi-Power, with resistor, Unshrouded, Micro, Code 78665 TerminalHigh Current Micro 280
View on
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HELLA Popular Fits: 4.6L V8 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
View on
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BOSCH Fits: 4.6L V8 0986AH0113
🇺🇸 US 🇨🇦 CA
Multi-Purpose Relay
View on
Amazon
ROSTRA Fits: 4.6L V8 600015
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AmpereConnector Shape: Rectangle
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY232
🇺🇸 US 🇨🇦 CA
Amperage Rating: 35 AConnector Gender: Male
Fitment notes — STANDARD MOTOR PRODUCTS RY232
Amperage Rating: 35 AConnector Gender: MaleFunctions: Multi-Function Relayblack
View on
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WELLS Fits: 4.6L V8 1R1059
🇺🇸 US 🇨🇦 CA
Mounting Hardware Included: NoVoltage: 12.0 VDC
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This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Ignition Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
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HOLSTEIN Fits: 4.6L V8 2RSW0042
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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This table covers the relays that control the Ignition circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Ignition Starter Switch

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 D1462F
🇺🇸 US 🇨🇦 CA
INCLUDES KEY ALARM SWITCH
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ROSTRA Fits: 4.6L V8 630031
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 US710
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.6L V8 1S9705
🇺🇸 US 🇨🇦 CA
View on
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This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Instrument Panel Dimmer Switch

Brand Part Number Markets Notes Buy
WELLS Popular Fits: 4.6L V8 1S10156
🇺🇸 US 🇨🇦 CA
Blackwith Fog Lights
Fitment notes — WELLS 1S10156
Blackwith Fog Lightswith Lane Departure Warning System
View on
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WELLS Popular Fits: 4.6L V8 1S10145
🇺🇸 US 🇨🇦 CA
Blackwith Fog Lights
Fitment notes — WELLS 1S10145
Blackwith Fog Lightswithout Lane Departure Warning System
View on
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ROSTRA Fits: 4.6L V8 650872
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650872
with Lane Departure Warning Systemwith Fog LightsLight Beige
View on
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ROSTRA Fits: 4.6L V8 650784
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650784
with Lane Departure Warning Systemwith Fog LightsTan
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ROSTRA Fits: 4.6L V8 650792
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650792
with Lane Departure Warning Systemwith Fog LightsGray
View on
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ROSTRA Fits: 4.6L V8 650864
🇺🇸 US 🇨🇦 CA
with Fog Lightswithout Lane Departure Warning System
Fitment notes — ROSTRA 650864
with Fog Lightswithout Lane Departure Warning SystemTan
View on
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ROSTRA Fits: 4.6L V8 651039
🇺🇸 US 🇨🇦 CA
with lane departure warning systemwith fog lights
Fitment notes — ROSTRA 651039
with lane departure warning systemwith fog lightsblack
View on
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ROSTRA Fits: 4.6L V8 651040
🇺🇸 US 🇨🇦 CA
with Fog Lightswithout Lane Departure Warning System
Fitment notes — ROSTRA 651040
with Fog Lightswithout Lane Departure Warning SystemLight Beige
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This table covers the Instrument Panel Dimmer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Multi-Function Relay

Brand Part Number Markets Notes Buy
BOSCH Fits: 4.6L V8 0986AH0113
🇺🇸 US 🇨🇦 CA
Multi-Purpose Relay
Fitment notes — BOSCH 0986AH0113
Multi-Purpose Relay
30 Ampswith 5 Terminal Relay
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This table covers the relays that control the Multi-Function circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Neutral Safety Switch / Range Sensor

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.6L V8 670583
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 NS635
🇺🇸 US 🇨🇦 CA
with 20 Bolt Transmission Pan
View on
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WELLS Fits: 4.6L V8 1S12276
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.

Oil Pressure Sender / Switch

Economy

Brand Part Number Markets Notes Buy
UNITED MOTOR PRODUCTS Fits: 4.6L V8 OPS140
🇺🇸 US 🇨🇦 CA
with Light
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 PS276
🇺🇸 US 🇨🇦 CA
View on
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WELLS Popular Fits: 4.6L V8 1S6662
🇺🇸 US 🇨🇦 CA
with Light
View on
Amazon
GM GENUINE Fits: 4.6L V8 19436254
🇺🇸 US 🇨🇦 CA
Connector Gender: Female
Fitment notes — GM GENUINE 19436254
Connector Gender: Female
3/8 Pipe Thread
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GPD Fits: 4.6L V8 1815331
🇺🇸 US 🇨🇦 CA
with Light
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ROSTRA Fits: 4.6L V8 501236
🇺🇸 US 🇨🇦 CA
View on
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This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.

Parking Lamp Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
View on
Amazon
HOLSTEIN Fits: 4.6L V8 2RSW0042
🇺🇸 US 🇨🇦 CA
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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This table covers the relays that control the Parking Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Power Seat Switch

Economy

Brand Part Number Markets Notes Buy
SHEE-MAR Popular Fits: 4.6L V8 SM2136
🇺🇸 US 🇨🇦 CA
Front Leftwith 6 Way Power Seat
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SKP Popular Fits: 4.6L V8 SKPSW17
🇺🇸 US 🇨🇦 CA
Driver Side
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SKP Popular Fits: 4.6L V8 SKPSW148
🇺🇸 US 🇨🇦 CA
Fits Leftor with 8 Way Power Seats
View on
Amazon
AUTOTECNICA Fits: 4.6L V8 GM1323055
🇺🇸 US 🇨🇦 CA
Fits Front LeftSwitch Type: Rocker
Fitment notes — AUTOTECNICA GM1323055
Fits:
Front LeftSwitch Type: Rocker
or:
Front RightSwitch Type: Rocker
View on
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DORMAN Fits: 4.6L V8 901256
🇺🇸 US 🇨🇦 CA
Fits Front Left6 Way Adjustment
Fitment notes — DORMAN 901256
Fits:
Front Left6 Way Adjustment
or:
Front Right6 Way Adjustment
View on
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DORMAN Fits: 4.6L V8 901272
🇺🇸 US 🇨🇦 CA
Front Right8 Way Adjustment
View on
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SHEE-MAR Fits: 4.6L V8 SM2135
🇺🇸 US 🇨🇦 CA
Front Rightwith 8 Way Power Switch
View on
Amazon
SKP Fits: 4.6L V8 SKPSW151
🇺🇸 US 🇨🇦 CA
Fits Rightor with 8 Way Power Seats
View on
Amazon
VEMO Fits: 4.6L V8 V51730160
🇺🇸 US 🇨🇦 CA
6 Way
Fitment notes — VEMO V51730160
6 Way
Front Left
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VEMO Fits: 4.6L V8 V51730164
🇺🇸 US 🇨🇦 CA
8 Way
Fitment notes — VEMO V51730164
8 Way
Front Left
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VEMO Fits: 4.6L V8 V51730165
🇺🇸 US 🇨🇦 CA
8 Way
Fitment notes — VEMO V51730165
8 Way
Front Right
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
ROSTRA Popular Fits: 4.6L V8 660009
🇺🇸 US 🇨🇦 CA
Fits Leftwith 6-Way Power Seats
Fitment notes — ROSTRA 660009
Fits:
Leftwith 6-Way Power Seats
or:
Rightwith 6-Way Power Seats
View on
Amazon
ROSTRA Popular Fits: 4.6L V8 662583
🇺🇸 US 🇨🇦 CA
Leftwith 8-Way Power Seats
View on
Amazon
ROSTRA Fits: 4.6L V8 662582
🇺🇸 US 🇨🇦 CA
Rightwith 8-Way Power Seats
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 PSW17
🇺🇸 US 🇨🇦 CA
Front Leftwith 6 Way
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 PSW148
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangular
Fitment notes — STANDARD MOTOR PRODUCTS PSW148
Connector Shape: Rectangular
Front Leftwith 8 Way Power Seats
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 PSW149
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangle
Fitment notes — STANDARD MOTOR PRODUCTS PSW149
Connector Shape: Rectangle
Front Leftwith 8 Way Power Seats
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 PSW151
🇺🇸 US 🇨🇦 CA
with 8 Way Power SeatsRight
View on
Amazon
WELLS Fits: 4.6L V8 1S12378
🇺🇸 US 🇨🇦 CA
Fits Front LeftBlack
Fitment notes — WELLS 1S12378
Fits:
Front LeftBlackLumbar Switch
or:
Front RightBlackLumbar Switch
View on
Amazon
WELLS Fits: 4.6L V8 1S7614
🇺🇸 US 🇨🇦 CA
Fits Front Leftwith 6 Way Power Seat
Fitment notes — WELLS 1S7614
Fits:
Front Leftwith 6 Way Power Seat
or:
Front Rightwith 6 Way Power Seat
View on
Amazon
WELLS Fits: 4.6L V8 1S12377
🇺🇸 US 🇨🇦 CA
Front Leftwith 8-Way Switch
View on
Amazon
WELLS Fits: 4.6L V8 1S12379
🇺🇸 US 🇨🇦 CA
Front Rightwith 8-Way Switch
View on
Amazon

This table covers the Power Seat switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Power Window Switch

Economy

Brand Part Number Markets Notes Buy
DORMAN Popular Fits: 4.6L V8 901149
🇺🇸 US 🇨🇦 CA
Fits Rear Left1 Button
Fitment notes — DORMAN 901149
Fits:
Rear Left1 Button
or:
Rear Right1 Button
View on
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AUTOTECNICA Fits: 4.6L V8 GM1322304
🇺🇸 US 🇨🇦 CA
Fits Rear LeftBlack
Fitment notes — AUTOTECNICA GM1322304
Fits:
Rear LeftBlackTerminal Type: Blade1 Button
or:
Rear RightBlackTerminal Type: Blade1 Button
View on
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SHEE-MAR Fits: 4.6L V8 SM1810
🇺🇸 US 🇨🇦 CA
Fits Rear Right
Fitment notes — SHEE-MAR SM1810
Fits:
Rear Right
or:
Rear Left
View on
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SKP Fits: 4.6L V8 SK901149
🇺🇸 US 🇨🇦 CA
Rear1 Button
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 22895545
🇺🇸 US 🇨🇦 CA
Rearwith Backlighting and Graphics
View on
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ROSTRA Fits: 4.6L V8 660015
🇺🇸 US 🇨🇦 CA
Rear
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 DWS218
🇺🇸 US 🇨🇦 CA
Rearwith Backlighting
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 DWS1628
🇺🇸 US 🇨🇦 CA
Front Left
View on
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WELLS Fits: 4.6L V8 1S12192
🇺🇸 US 🇨🇦 CA
Rear
View on
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WELLS Fits: 4.6L V8 1S13220
🇺🇸 US 🇨🇦 CA
Front Right
View on
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This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Powertrain Control Module Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 1581106
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 1581106
Black
Black5-TerminalSPDT 280 Mini, Hi/LowNot Shrouded
View on
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GM GENUINE Fits: 4.6L V8 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
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HELLA Fits: 4.6L V8 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
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Amazon

This table covers the relays that control the Powertrain Control Module circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Radiator Fan Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 1581106
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 1581106
Black
5-TerminalSPDT 280 Mini, Hi/LowNot ShroudedMotor Relay
View on
Amazon
GM GENUINE Popular Fits: 4.6L V8 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current MicroMotor Relay
View on
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HELLA Fits: 4.6L V8 933332581
🇺🇸 US 🇨🇦 CA
5-Pin ConnectorColor: Black
Fitment notes — HELLA 933332581
5-Pin ConnectorColor: Black
Motor Relay
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY255
🇺🇸 US 🇨🇦 CA
Amperage Rating: 70 AContinuous Duty: YES
Fitment notes — STANDARD MOTOR PRODUCTS RY255
Amperage Rating: 70 AContinuous Duty: YESFunctions: Multi-Function Relay
Square Bodywith 4 Blade TerminalsMotor Relay
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY1760
🇺🇸 US 🇨🇦 CA
Functions: Coolant Fan Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY1760
Functions: Coolant Fan Relay
Square Bodywith 4 Blade TerminalsMotor Relay
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
Rectangularwith 4 Blade TerminalMotor Relay
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY232
🇺🇸 US 🇨🇦 CA
Amperage Rating: 35 AConnector Gender: Male
Fitment notes — STANDARD MOTOR PRODUCTS RY232
Amperage Rating: 35 AConnector Gender: MaleFunctions: Multi-Function Relayblack
with 5 Blade TerminalMotor Relay
View on
Amazon

This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Seat Heater Switch

Brand Part Number Markets Notes Buy
WELLS Fits: 4.6L V8 1S12487
🇺🇸 US 🇨🇦 CA
Front Rightwith Heated Seats
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This table covers the Seat Heater switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Seat Lumbar Switch

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 84477509
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 84477509
Black
Fits:
Front Right8 WAY POWER PASSENGER SEAT ADJUSTER(AH8),Interior Trim Color (19I)
or:
Front Left8-WAY Power Seat Adjuster (AE8),Interior Trim Color (19I)
View on
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ROSTRA Fits: 4.6L V8 662608
🇺🇸 US 🇨🇦 CA
FrontTitanium
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ROSTRA Fits: 4.6L V8 662610
🇺🇸 US 🇨🇦 CA
FrontCashmere
View on
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 PSW146
🇺🇸 US 🇨🇦 CA
Left and Right
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This table covers the Seat Lumbar switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Starter Motor Control Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith Resistor
View on
Amazon
ACDELCO Fits: 4.6L V8 D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
View on
Amazon
ROSTRA Fits: 4.6L V8 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY280
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 4
View on
Amazon
WELLS Fits: 4.6L V8 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
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Amazon

This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Sunroof / Sunshade Switch

Economy

Brand Part Number Markets Notes Buy
ULTRA-POWER Fits: 4.6L V8 1S12446
🇺🇸 US 🇨🇦 CA
Fits Cashmer
Fitment notes — ULTRA-POWER 1S12446
Fits:
Cashmer
or:
Electric Sunroof Switch
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.6L V8 662645
🇺🇸 US 🇨🇦 CA
Cashmere
View on
Amazon

This table covers the Sunroof / Sunshade switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Tail Lamp Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
View on
Amazon

This table covers the relays that control the Tail Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Transmission-Automatic Fluid Pressure Switch

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.6L V8 501337
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.6L V8 1S10175
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the Transmission-Automatic Fluid Pressure switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Transmission-Automatic Manual Shift Shaft Position Switch

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 24239970
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E4 speed Automatic trans.
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This table covers the Transmission-Automatic Manual Shift Shaft Position switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Trunk Lid / Tailgate Release Switch

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 D1411F
🇺🇸 US 🇨🇦 CA
ROUND SHAPEIndividual/Non-Bucket Front Seat (AN3), Custom Front Bucket Seat (A51)
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ROSTRA Fits: 4.6L V8 650872
🇺🇸 US 🇨🇦 CA
with Lane Departure Warning Systemwith Fog Lights
Fitment notes — ROSTRA 650872
with Lane Departure Warning Systemwith Fog LightsLight Beige
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 DS2209
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.6L V8 1S10156
🇺🇸 US 🇨🇦 CA
Blackwith Fog Lights
Fitment notes — WELLS 1S10156
Blackwith Fog Lightswith Lane Departure Warning System
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WELLS Fits: 4.6L V8 1S10145
🇺🇸 US 🇨🇦 CA
Blackwith Fog Lights
Fitment notes — WELLS 1S10145
Blackwith Fog Lightswithout Lane Departure Warning System
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This table covers the Trunk Lid / Tailgate Release switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Trunk Release Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
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This table covers the relays that control the Trunk Release circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Turn Signal Switch

Economy

Brand Part Number Markets Notes Buy
SHEE-MAR Fits: 4.6L V8 SM279C
🇺🇸 US 🇨🇦 CA
without Heated Washer Nozzles
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Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.6L V8 D6279C
🇺🇸 US 🇨🇦 CA
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ROSTRA Fits: 4.6L V8 640078
🇺🇸 US 🇨🇦 CA
without Heated Windshield Washers
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 CBS1423
🇺🇸 US 🇨🇦 CA
without HEATED WINDSHIELD
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WELLS Fits: 4.6L V8 1S8338
🇺🇸 US 🇨🇦 CA
Indicator Markings Color: White
Fitment notes — WELLS 1S8338
Indicator Markings Color: White
without Heated Washer System
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This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Vacuum Pump Relay

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.6L V8 600439
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.6L V8 1R3319
🇺🇸 US 🇨🇦 CA
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This table covers the relays that control the Vacuum Pump circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Warning Light Relay

Brand Part Number Markets Notes Buy
HOLSTEIN Fits: 4.6L V8 2RSW0042
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.6L V8 RY862
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AFunctions: Multi-Function Relay
Fitment notes — STANDARD MOTOR PRODUCTS RY862
Amperage Rating: 20 AFunctions: Multi-Function RelayBlack
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This table covers the relays that control the Warning Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Wiper / Washer Switch

Economy

Brand Part Number Markets Notes Buy
WAI GLOBAL Fits: 4.6L V8 372800
🇺🇸 US 🇨🇦 CA
Solvent Level Switch Kit
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Standard Replacement

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.6L V8 640078
🇺🇸 US 🇨🇦 CA
without Heated Windshield Washers
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 4.6L V8 CBS1423
🇺🇸 US 🇨🇦 CA
without HEATED WINDSHIELD
View on
Amazon
WELLS Fits: 4.6L V8 1S8338
🇺🇸 US 🇨🇦 CA
Indicator Markings Color: White
Fitment notes — WELLS 1S8338
Indicator Markings Color: White
without Heated Washer System
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This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Wiper Motor Relay

Brand Part Number Markets Notes Buy
HELLA Fits: 4.6L V8 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
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This table covers the relays that control the Wiper Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Wiring Relay

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.6L V8 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith Resistor
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GM GENUINE Fits: 4.6L V8 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
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GM GENUINE Fits: 4.6L V8 21997416
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 21997416
Black
SPST4-Terminal Space Saver Ultra Micro
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This table covers the relays that control the Wiring circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Buying Electrical Switch & Relay Parts for a 2008 Buick Lucerne

On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.

  • Match the engine first. Every electrical switch & relay part here is engine-specific; each row shows which engine(s) it fits.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Power Seat Switch and Accessory Power Relay .

Frequently Asked Questions

How many electrical switch & relay parts fit the 2008 Buick Lucerne?

Our catalog currently lists 213 electrical switch & relay parts for the 2008 Buick Lucerne across 50 subcategories and 21 brands, covering both the 3.8L V6 and the 4.6L V8. Each part is matched to the engine(s) it fits.

Do electrical switch & relay parts differ between 2008 Buick Lucerne engines?

Yes. Every electrical switch & relay part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of electrical switch & relay problems on a 2008 Buick Lucerne?

Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2008 Buick Lucerne was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 2008 Buick Lucerne?

First match the engine — each row shows which engine(s) the part fits. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2008 Buick Lucerne

Electrical Switch & Relay Parts for Other Buick Lucerne Years

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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.