2019 Buick Cascada Electrical Switch & Relay Parts

Engine:
1.6L L4 Turbocharged

The 2019 Buick Cascada has 60 electrical switch & relay parts with verified fitment on this page — 22 part types and 14 brands, covering the 1.6L L4 Turbocharged engine. Each part includes a manufacturer part number and application notes.

On the 2019 Buick Cascada, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 17 parts of the 60 listed are Oil Pressure Sender / Switch (7 parts), Radiator Fan Relay (5 parts) and Turn Signal Switch (5 parts). The other 19 part types cover the remaining 43 parts.

A/C Refrigerant Pressure Switch

Brand Part Number Markets Notes Buy
FOUR SEASONS 20915
🇺🇸 US
Pressure Switch
Fitment notes — FOUR SEASONS 20915
Pressure Switch
Transducer
View on
Amazon
GM GENUINE 1551343
🇺🇸 US 🇨🇦 CA
without Circuit0.0035 KG
View on
Amazon
UAC SW10093C
🇺🇸 US
Pressure Transducer
Fitment notes — UAC SW10093C
Pressure Transducer
Transducer
View on
Amazon
WELLS 1S8929
🇺🇸 US
Clutch Cycle and Fan ControlCut-Off
View on
Amazon

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.

Cruise Control Switch

Brand Part Number Markets Notes Buy
GM GENUINE 13352971
🇺🇸 US 🇨🇦 CA
Except Lane Departure Warning Indicator (UFL)Cruise Control (K34), Leather Steering Wheel (N34)
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GM GENUINE 13496970
🇺🇸 US 🇨🇦 CA
Fits Cruise Control (K34), Leather Steering Wheel (N34), Forward Collision Alert (UEU)
Fitment notes — GM GENUINE 13496970
Fits:
Cruise Control (K34), Leather Steering Wheel (N34), Forward Collision Alert (UEU)
or:
Cruise Control (K34), 3-Spoke Leather Steering Wheel (N55), Forward Collision Alert (UEU)
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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.

Defroster Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13468934
🇺🇸 US 🇨🇦 CA
4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly
View on
Amazon
GM GENUINE 13598347
🇺🇸 US 🇨🇦 CA
GrayElectric ISO Mini, Single Pole Single Throw
Fitment notes — GM GENUINE 13598347
GrayElectric ISO Mini, Single Pole Single Throw6.3mm Series4-Terminal
View on
Amazon
GM GENUINE 84749906
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the relays that control the Defroster 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.

Diesel Fuel Heater Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13468934
🇺🇸 US 🇨🇦 CA
4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly
View on
Amazon
GM GENUINE 13598347
🇺🇸 US 🇨🇦 CA
GrayElectric ISO Mini, Single Pole Single Throw
Fitment notes — GM GENUINE 13598347
GrayElectric ISO Mini, Single Pole Single Throw6.3mm Series4-Terminal
View on
Amazon

This table covers the relays that control the Diesel Fuel Heater 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

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS CBS2259
🇺🇸 US
Black
View on
Amazon
WELLS 1S11462
🇺🇸 US
Indicator Markings Color: White
View on
Amazon

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.

Driver Information Display Switch

Brand Part Number Markets Notes Buy
WELLS 1S11462
🇺🇸 US
Indicator Markings Color: White
View on
Amazon

This table covers the Driver Information Display 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.

Engine Control Module Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13468934
🇺🇸 US 🇨🇦 CA
4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly
View on
Amazon

This table covers the relays that control the Engine 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.

Fog / Driving Lamp Switch

Brand Part Number Markets Notes Buy
WELLS 1S16956
🇺🇸 US
Black
View on
Amazon

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
GM GENUINE 13500113
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13500113
Black
Black20 Amp4-TerminalMultiuse
View on
Amazon
VEMO V30710036
🇺🇸 US
View on
Amazon

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.

Hazard Warning Switch

Brand Part Number Markets Notes Buy
WELLS 1S17849
🇺🇸 US
View on
Amazon

This table covers the Hazard Warning 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.

Headlamp Switch

Brand Part Number Markets Notes Buy
GM GENUINE 13292028
🇺🇸 US 🇨🇦 CA
with Front Fog Lamps (T3U)
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GM GENUINE 13411412
🇺🇸 US 🇨🇦 CA
Left Hand Drive (LHD), Auto Headlamp Leveling System (TR7), Tunnel Detection Auto On-Off Headlamps Control (TTW), Auto On / Off Headlamps Control (T83)Value Added Cockpit (VRG)
Fitment notes — GM GENUINE 13411412
Left Hand Drive (LHD), Auto Headlamp Leveling System (TR7), Tunnel Detection Auto On-Off Headlamps Control (TTW), Auto On / Off Headlamps Control (T83)Value Added Cockpit (VRG)Except Front Fog Lamp (T3U)
View on
Amazon
WELLS 1S16956
🇺🇸 US
with Fog LightsBlack
View on
Amazon

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.

Ignition Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13468934
🇺🇸 US 🇨🇦 CA
4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly
View on
Amazon
GM GENUINE 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon
GM GENUINE 13598347
🇺🇸 US 🇨🇦 CA
GrayElectric ISO Mini, Single Pole Single Throw
Fitment notes — GM GENUINE 13598347
GrayElectric ISO Mini, Single Pole Single Throw6.3mm Series4-Terminal
View on
Amazon
GM GENUINE 13361777
🇺🇸 US 🇨🇦 CA
View on
Amazon

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

Economy

Brand Part Number Markets Notes Buy
VEMO V51800018
🇺🇸 US
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE 23276089
🇺🇸 US 🇨🇦 CA
No Back LightIgnition Switch
Fitment notes — GM GENUINE 23276089
No Back LightIgnition SwitchCruise Control (K34), Automatic Transmission Provisions (MM1), Heated Steering Wheel Switch (UVD)
View on
Amazon
ROSTRA 630079
🇺🇸 US
View on
Amazon
WELLS 1S12007
🇺🇸 US
Mounting Type: Bolt On
View on
Amazon

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.

Oil Pressure Sender / Switch

Economy

Brand Part Number Markets Notes Buy
DORMAN 926397
🇺🇸 US
3 Way with Leadswith Flat Connector
View on
Amazon
HOLSTEIN 2OPS0020
🇺🇸 US
with Light
View on
Amazon
UNITED MOTOR PRODUCTS OPS322
🇺🇸 US
with Light
View on
Amazon
WALKER PRODUCTS 2561004
🇺🇸 US
Includes Seal
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular PS623
🇺🇸 US
Connector Shape: Rectangle, OvalSensor Only
View on
Amazon
WELLS Popular 1S12693
🇺🇸 US
Connector Gender: Female
View on
Amazon
Brand Part Number Markets Notes Buy
GPD 1815461
🇺🇸 US
with Flat 3 Pin Connector
View on
Amazon

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 Aid Control Switch

Brand Part Number Markets Notes Buy
GM GENUINE 13288076
🇺🇸 US 🇨🇦 CA
Park Assist with Indicator Sensor (UD5), Rear Parking Assist/Obstacle Detection Sensor (UD7), Lane Departure Warning Indicator (UFL)
View on
Amazon

This table covers the Parking Aid 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.

Power Seat Switch

Economy

Brand Part Number Markets Notes Buy
AUTOTECNICA GM1322316
🇺🇸 US
Front Left8 Way Adjustment
View on
Amazon
DORMAN 901271
🇺🇸 US
Front Left8 Way Adjustment
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
ROSTRA 662584
🇺🇸 US
Front Left8 Way Adjustment
View on
Amazon
STANDARD MOTOR PRODUCTS PSW149
🇺🇸 US
Connector Shape: Rectangle
Fitment notes — STANDARD MOTOR PRODUCTS PSW149
Connector Shape: Rectangle
without Headrest Monitorwith 8 Way Power SeatsFront Left
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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

Brand Part Number Markets Notes Buy
GM GENUINE 13398365
🇺🇸 US 🇨🇦 CA
Front Left
View on
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WELLS 1S15712
🇺🇸 US
Front Right
View on
Amazon
WELLS 1S15729
🇺🇸 US
Front Left
View on
Amazon

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.

Radiator Fan Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 1551279
🇺🇸 US 🇨🇦 CA
Gray950 ISO Power Mini Relay
Fitment notes — GM GENUINE 1551279
Gray950 ISO Power Mini RelayMotor Relay
View on
Amazon
GM GENUINE 13468935
🇺🇸 US 🇨🇦 CA
Electronic, 5 BladeElectronic Relay ISO Mini SPDT
Fitment notes — GM GENUINE 13468935
Electronic, 5 BladeElectronic Relay ISO Mini SPDTMotor Relay
View on
Amazon
GM GENUINE 13598349
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 13598349
Black
Black5-Terminal6.3mm Terminals,Mini ISO SPDTMotor Relay
View on
Amazon
STANDARD MOTOR PRODUCTS RY255
🇺🇸 US
Amperage Rating: 70 AContinuous Duty: YES
Fitment notes — STANDARD MOTOR PRODUCTS RY255
Amperage Rating: 70 AContinuous Duty: YESFunctions: Multi-Function Relay
with 4 Blade TerminalMotor Relay
View on
Amazon
STANDARD MOTOR PRODUCTS RY121
🇺🇸 US
Functions: Air Condition Control Relayblack
Fitment notes — STANDARD MOTOR PRODUCTS RY121
Functions: Air Condition Control Relayblack
with 5 Blade TerminalMotor Relay
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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
ULTRA-POWER PSW149
🇺🇸 US 🇨🇦 CA
Fits Seat Control SwitchPower Seat Switch
Fitment notes — ULTRA-POWER PSW149
Fits:
Seat Control SwitchPower Seat Switchwithout Headrest Monitorwith 8 Way Power SeatsDriver Sid
or:
Seat Control SwitchDriver Sidewith 8 Way Power 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.

Starter Motor Control Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
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.

Turn Signal Switch

Economy

Brand Part Number Markets Notes Buy
VEMO V51730142
🇺🇸 US
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
WELLS Popular 1S11462
🇺🇸 US
Indicator Markings Color: White
View on
Amazon
GM GENUINE 84545369
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 84545369
Black
VALUE ADDED STEERING COLUMN
View on
Amazon
STANDARD MOTOR PRODUCTS CBS2259
🇺🇸 US
Black
View on
Amazon
Brand Part Number Markets Notes Buy
VEMO V40802444
🇺🇸 US
Number of Pins 12
View on
Amazon

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.

Wiper / Washer Switch

Brand Part Number Markets Notes Buy
GM GENUINE 95433824
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 95433824
Black
Value Added Cockpit (VRG)Value Added Steering Column
View on
Amazon
STANDARD MOTOR PRODUCTS WP484
🇺🇸 US
View on
Amazon
WELLS 1S11522
🇺🇸 US
View on
Amazon

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.

Buying Electrical Switch & Relay Parts for a 2019 Buick Cascada

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

  • Confirm you have the 1.6L L4 Turbocharged engine — every part on this page is matched to it.
  • 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: Oil Pressure Sender / Switch and Radiator Fan Relay .

Frequently Asked Questions

How many electrical switch & relay parts fit the 2019 Buick Cascada?

Our catalog currently lists 60 electrical switch & relay parts for the 2019 Buick Cascada across 22 subcategories and 14 brands, covering the 1.6L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.

What are the signs of electrical switch & relay problems on a 2019 Buick Cascada?

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 2019 Buick Cascada 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 2019 Buick Cascada?

Every part on this page is matched to the 1.6L L4 Turbocharged engine. 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 2019 Buick Cascada

Electrical Switch & Relay Parts for Other Buick Cascada 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.