2021 Cadillac XT6 Electrical Switch & Relay Parts: OEM & Replacement (71 Parts)

71 Electrical switch & relay parts are listed for the 2021 Cadillac XT6, in 32 part types, covering both the 2.0L L4 Turbocharged and the 3.6L V6. Each one has a brand, a manufacturer part number and notes that say where it fits.

The switch and relay system on the 2021 Cadillac XT6 covers the switches, relays and flashers that route power to everything the driver touches. The largest groups are Oil Pressure Sender / Switch (6 parts), A/C Refrigerant Pressure Switch (5 parts) and Starter Motor Control Relay (5 parts). The other 29 part types cover the remaining 55 parts.

A/C Compressor Relay

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	D1780C	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE D1780C Black Black35AMP5 TerminalHigh Current Micro 280Control Relay	View on Amazon
GM GENUINE Fits: 3.6L V6	13509878	🇺🇸 US 🇨🇦 CA	Control Relay	View on Amazon

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 Refrigerant Pressure Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: 3.6L V6	1551343	🇺🇸 US 🇨🇦 CA	Use On Vehicles with Circle Connection To Engine Wiring Harnesswithout Circuit Fitment notes — GM GENUINE 1551343 Use On Vehicles with Circle Connection To Engine Wiring Harnesswithout CircuitAir Conditioning SEN For LFY/LGX Must be Ordered with Corresponding Harn Assembly-Engine wiring harness Extn When Engine Harn has Oval Conn.	View on Amazon
FOUR SEASONS Fits: 3.6L V6	20915	🇺🇸 US 🇨🇦 CA	Pressure Switch Fitment notes — FOUR SEASONS 20915 Pressure Switch Transducer	View on Amazon
GM GENUINE Fits: 3.6L V6	1551388	🇺🇸 US 🇨🇦 CA	Fits Use On Vehicles with Flat/Oval Connection To Engine Wiring HarnessMating Connector Use 86792094 Fitment notes — GM GENUINE 1551388 Fits: Use On Vehicles with Flat/Oval Connection To Engine Wiring HarnessMating Connector Use 86792094with Integrated CircuitA/C Refrigerant (KR1) or: Use On Vehicles with Flat/Oval Connection To Engine Wiring HarnessMating Connector Use 86792094with Integrated CircuitLow Global Warming Potential / GWP Refrigerant (KRV)	View on Amazon
UAC Fits: 3.6L V6	SW11475C	🇺🇸 US 🇨🇦 CA	High Pressure Switch	View on Amazon
UAC Fits: 3.6L V6	SW10093C	🇺🇸 US 🇨🇦 CA	Pressure Transducer Fitment notes — UAC SW10093C Pressure Transducer Transducer	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.

Accessory Delay Relay

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13509878	🇺🇸 US 🇨🇦 CA		View on Amazon

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.

Brake Light Switch

Brand	Part Number	Markets	Notes	Buy
AUTOTECNICA Fits: 3.6L V6	CE1322627	🇺🇸 US 🇨🇦 CA		View on Amazon
VEMO Fits: 3.6L V6	V51730194	🇺🇸 US 🇨🇦 CA	Stop Light Switch, 3 Pins	View on Amazon

This table covers the pedal-mounted switch that turns on the brake 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.

Brake Pressure Warning Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	23139898	🇺🇸 US 🇨🇦 CA		View on Amazon

This table covers the Brake Pressure 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.

Cruise Control Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13543068	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13543068 Black Fits: LeftPremium LuxuryLeather Interior Trim Color (HEG), Leather Interior Trim Configuration (HMS), Leather Interior Trim Configuration (HTW), Leather Interior Trim Configuration/Color (H0Y), Steering Wheel with Automatic Heat (KI3)Labeled 13543068 or: LeftSportLeather Interior Trim Color (HV9), Leather Interior Trim Color (H1Y), Leather Interior Trim (H2U), Steering Wheel with Automatic Heat (KI3), Forward Collision Alert (UEU)Labeled 13543068 or: LeftSportLeather Interior Trim Configuration (HMS), Steering Wheel with Automatic Heat (KI3), Forward Collision Alert (UEU)Labeled 13543068	View on Amazon

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.

Dimmer Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	23474576	🇺🇸 US 🇨🇦 CA	Black	View on Amazon
WELLS Fits: 3.6L V6	1S17015	🇺🇸 US 🇨🇦 CA	with Automatic Headlight Dimmer	View on Amazon
WELLS Fits: 3.6L V6	1S17504	🇺🇸 US 🇨🇦 CA	Mounting Hardware Included: No Fitment notes — WELLS 1S17504 Mounting Hardware Included: No with Automatic Headlight Dimmer	View on Amazon
WELLS Fits: 3.6L V6	1S17699	🇺🇸 US 🇨🇦 CA	without Automatic Headlight Dimmer	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.

Door Lock Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	87823316	🇺🇸 US 🇨🇦 CA	Fits LeftJet Black Fitment notes — GM GENUINE 87823316 Fits: LeftJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold(DYX), Leather Interior Trim (H2U), Performance Audio Speaker System with Branded Surround Amp (UQP), Interior Trim Color (4AA)Except Express up/Down Power Windows-Rear Doors (AER) or: LeftJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold(DYX), Leather Interior Trim Configuration (HMS), Performance Audio Speaker System with Branded Surround Amp (UQP), Interior Trim Color (4GC)Except Express up/Down Power Windows-Rear Doors (AER) or: LeftPremium LuxuryJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold (DYX), Leather Interior Trim Color (HEG), Performance Audio Speaker System with Branded Surround Amp (UQP), Interior Trim Color (4GQ)Except Express up/Down Power Windows-Rear Doors (AER) or: LeftPremium LuxuryJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold (DYX), Leather Interior Trim Configuration (HTW), Performance Audio Speaker System with Branded Surrou	View on Amazon
GM GENUINE Fits: 3.6L V6	87823317	🇺🇸 US 🇨🇦 CA	Instruction Manual Included: No Fitment notes — GM GENUINE 87823317 Instruction Manual Included: No Fits: RightPremium LuxuryJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold(DYX), Leather Interior Trim Configuration/Color (H0Y), Bose Premium Audio Speaker System with Amplifier (UQA), Interior Trim Color (4AA)Except Express up/Down Power Windows-Rear Doors (AER) or: RightPremium LuxuryJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold(DYX), Leather Interior Trim Configuration/Color (H0Y), Performance Audio Speaker System with Branded Surround Amp (UQP), Interior Trim Color (4AA)Except Express up/Down Power Windows-Rear Doors (AER) or: RightSportJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold(DYX), Leather Interior Trim Color (H1Y),Bose Premium Audio Speaker System with Amplifier (UQA),Interior Trim Color (4AA)Except Express up/Down Power Windows-Rear Doors (AER) or: RightSportJet BlackHeated Outside Mirror with Driver Light Sens and Powerfold(DYX), Leather Interior Trim Color (HV9),Bose	View on Amazon

This table covers the Door Lock 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.

Driver Information Display Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	85653886	🇺🇸 US 🇨🇦 CA	LABELED 85653886, 85596619, 85596617, 85653884,84900064, 8490006184471958, 84717075,84717054,84519308JET BLACK Fitment notes — GM GENUINE 85653886 LABELED 85653886, 85596619, 85596617, 85653884,84900064, 8490006184471958, 84717075,84717054,84519308JET BLACK3.0 Mid/High HMI, Enhanced Radio Infotainment System with Premium Navigation (IOT)	View on Amazon
GM GENUINE Fits: 3.6L V6	85653885	🇺🇸 US 🇨🇦 CA	Labeled 85653885, 84900063, 84900059, 84717073, 84717052Jet Black Fitment notes — GM GENUINE 85653885 Labeled 85653885, 84900063, 84900059, 84717073, 84717052Jet Black3.0 Mid/High HMI, Enhanced Radio Infotainment System with Mid Navigation (IOS)	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.

Emission Control Relay

Brand	Part Number	Markets	Notes	Buy
HOLSTEIN Fits: 3.6L V6	2RSW0042	🇺🇸 US 🇨🇦 CA		View on Amazon
STANDARD MOTOR PRODUCTS Fits: 3.6L V6	RY862	🇺🇸 US 🇨🇦 CA	Amperage Rating: 20 AFunctions: Multi-Function Relay Fitment notes — STANDARD MOTOR PRODUCTS RY862 Amperage Rating: 20 AFunctions: Multi-Function RelayBlack	View on Amazon

This table covers the relays that control the Emission 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.

Engine Control Module Relay

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13455283	🇺🇸 US 🇨🇦 CA		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.

Gearshift Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	24268133	🇺🇸 US 🇨🇦 CA	9 speed Automatic trans.3.49 Ratio (FXC)	View on Amazon

This table covers the Gearshift 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.

Glove Box Lamp Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	01642528	🇺🇸 US 🇨🇦 CA		View on Amazon

This table covers the Glove Box 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.

Hazard Warning Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	84544065	🇺🇸 US 🇨🇦 CA	Ebony Fitment notes — GM GENUINE 84544065 Ebony Lane Keep Assist Sensor Indicator (UHX)	View on Amazon
WELLS Fits: 3.6L V6	1S18144	🇺🇸 US 🇨🇦 CA		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 Relay

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13455283	🇺🇸 US 🇨🇦 CA	Low Beam	View on Amazon

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 Fits: 3.6L V6	1S17015	🇺🇸 US 🇨🇦 CA	with Automatic Headlight Dimmer	View on Amazon
WELLS Fits: 3.6L V6	1S17504	🇺🇸 US 🇨🇦 CA	Mounting Hardware Included: No Fitment notes — WELLS 1S17504 Mounting Hardware Included: No with Automatic Headlight Dimmer	View on Amazon
WELLS Fits: 3.6L V6	1S17699	🇺🇸 US 🇨🇦 CA	without Automatic Headlight Dimmer	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.

Heads Up Display (HUD) Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	84428043	🇺🇸 US 🇨🇦 CA	Jet BlackHead up Display (UV6)	View on Amazon

This table covers the Heads Up Display (HUD) 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.

Ignition Relay

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13468935	🇺🇸 US 🇨🇦 CA	ELECTRONIC, 5 BLADEELECTRONIC RELAY ISO MINI SPDT	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

Brand	Part Number	Markets	Notes	Buy
WELLS Fits: 3.6L V6	1S17694	🇺🇸 US 🇨🇦 CA	with Push Button Switch	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.

Liftgate Close Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	D1488G	🇺🇸 US 🇨🇦 CA	JET BLACK	View on Amazon

This table covers the Liftgate Close 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.

Oil Pressure Sender / Switch

Economy

Brand	Part Number	Markets	Notes	Buy
DORMAN Fits: 3.6L V6	926397	🇺🇸 US 🇨🇦 CA	3 Way with Leadswith Flat Connector	View on Amazon
HOLSTEIN Fits: 3.6L V6	2OPS0020	🇺🇸 US 🇨🇦 CA	with Light	View on Amazon
UNITED MOTOR PRODUCTS Fits: 3.6L V6	OPS322	🇺🇸 US 🇨🇦 CA	with Light	View on Amazon
WALKER PRODUCTS Fits: 3.6L V6	2561004	🇺🇸 US 🇨🇦 CA	Includes Seal	View on Amazon

Standard Replacement

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6	PS623	🇺🇸 US 🇨🇦 CA	Connector Shape: Rectangle, OvalSensor Only	View on Amazon
WELLS Popular Fits: 3.6L V6	1S12693	🇺🇸 US 🇨🇦 CA	Connector Gender: Female	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.

Overdrive Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13535949	🇺🇸 US 🇨🇦 CA	Fits LeftPremium Luxury Fitment notes — GM GENUINE 13535949 Fits: LeftPremium LuxuryLeather Interior Trim (H2U),Auto Heat Steering Wheel(KI3),Forward Collision Alert (UEU)Labeled 13535949 or 13528951 or 13522515Jet BlackSteering Wheel Transmission Shift Control Switch or: LeftPremium LuxuryLeather Interior Trim Color (HEG), Leather Interior Trim Configuration (HMS), Leather Interior Trim Configuration (HTW), Leather Interior Trim Configuration/Color (H0Y),Auto Heat Steering Wheel(KI3)Labeled 13535949 or 13528951 or 13522515Jet BlackSteering Wheel Transmission Shift Control Switch	View on Amazon
GM GENUINE Fits: 3.6L V6	13535948	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13535948 Black Fits: RightPremium LuxuryLeather Interior Trim (H2U),Auto Heat Steering Wheel(KI3),Forward Collision Alert (UEU), Lane Active Safety Keep Assist(UKL)Labeled 13535948, 13528950, 13522514Steering Wheel Transmission Shift Control Switch or: RightPremium LuxuryLeather Interior Trim Color (HEG), Leather Interior Trim Configuration (HMS), Leather Interior Trim Configuration (HTW), Leather Interior Trim Configuration/Color (H0Y),Auto Heat Steering Wheel(KI3)Labeled 13535948, 13528950, 13522514Steering Wheel Transmission Shift Control Switch	View on Amazon
GM GENUINE Fits: 3.6L V6	13545790	🇺🇸 US 🇨🇦 CA	Fits LeftSport Fitment notes — GM GENUINE 13545790 Fits: LeftSportLeather Interior Trim Color (HV9), Leather Interior Trim Color (H1Y), Leather Interior Trim (H2U), Auto Heat Steering Wheel (KI3), Forward Collision Alert (UEU)Labeled 13545790,13528555,13535947Galvano SilverSteering Wheel Transmission Shift Control Switch or: LeftSportLeather Interior Trim Configuration (HMS), Auto Heat Steering Wheel (KI3), Forward Collision Alert (UEU)Labeled 13545790,13528555,13535947Galvano SilverSteering Wheel Transmission Shift Control Switch	View on Amazon
GM GENUINE Fits: 3.6L V6	13545792	🇺🇸 US 🇨🇦 CA	Fits RightSport Fitment notes — GM GENUINE 13545792 Fits: RightSportLeather Interior Trim Color (HV9) or Leather Interior Trim Color (H1Y), Leather Interior Trim (H2U), Steering Wheel with Automatic Heat (KI3), Forward Collision Alert (UEU)Galvano SilverSteering Wheel Transmission Shift Control Switch or: RightSportLeather Interior Trim Configuration (HMS), Steering Wheel with Automatic Heat (KI3), Forward Collision Alert (UEU)Galvano SilverExcept Lane Active Safety Keep Assist (UKL)Steering Wheel Transmission Shift Control Switch	View on Amazon

This table covers the Overdrive 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.

Parking Brake Switch

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: 3.6L V6	24268245	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO 24268245 GM Original Equipment 9 speed	View on Amazon
ACDELCO Fits: 3.6L V6	24295282	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO 24295282 GM Original Equipment 9 speed	View on Amazon
GM GENUINE Fits: 3.6L V6	85618948	🇺🇸 US 🇨🇦 CA	Switch Mounting Type: Snap In Fitment notes — GM GENUINE 85618948 Switch Mounting Type: Snap In MATING CONNECTOR 13577390 PER S.I. DOC 4363086JET BLACK	View on Amazon

This table covers the Parking Brake 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 Fits: 3.6L V6	85691533	🇺🇸 US 🇨🇦 CA	Terminal Type: "Pin, Blade Pin" Fitment notes — GM GENUINE 85691533 Terminal Type: "Pin, Blade Pin" Fits: Front RightJET BLACKBOSE Premium Audio Speaker System with Amplifier (UQA) or: Front RightPerformance Audio Speaker System with Branded Surround Amplifier (UQP)Jet Black	View on Amazon
GM GENUINE Fits: 3.6L V6	85691531	🇺🇸 US 🇨🇦 CA	Color: Jet Black Fitment notes — GM GENUINE 85691531 Color: Jet Black Fits: Front LeftJET BLACKBOSE Premium Audio Speaker System with Amplifier (UQA) or: Front LeftPerformance Audio Speaker System with Branded Surround Amplifier (UQP)Jet Black	View on Amazon
GM GENUINE Fits: 3.6L V6	85691527	🇺🇸 US 🇨🇦 CA	Color: Jet Black Fitment notes — GM GENUINE 85691527 Color: Jet Black Fits: RearJET BLACKBOSE Premium Audio Speaker System with Amplifier (UQA) or: RearPerformance Audio Speaker System with Branded Surround Amplifier (UQP)Jet Black	View on Amazon
WELLS Fits: 3.6L V6	1S15766	🇺🇸 US 🇨🇦 CA	Front Right	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
HELLA Fits: 3.6L V6	933332581	🇺🇸 US 🇨🇦 CA	5-Pin ConnectorColor: Black Fitment notes — HELLA 933332581 5-Pin ConnectorColor: Black Motor 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.

Starter Motor Control Relay

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Popular Fits: 3.6L V6	RY265	🇺🇸 US 🇨🇦 CA	Connector Shape: SquareFunctions: Relay Fitment notes — STANDARD MOTOR PRODUCTS RY265 Connector Shape: SquareFunctions: RelayMounting Bracket(s) Included: No	View on Amazon
GM GENUINE Fits: 3.6L V6	13468934	🇺🇸 US 🇨🇦 CA	4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly Fitment notes — GM GENUINE 13468934 4-Terminal 630 Series Single Pole Double Throw MiniFrom Block AssemblyAccessory	View on Amazon
GM GENUINE Fits: 3.6L V6	13455283	🇺🇸 US 🇨🇦 CA	Accessory	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 3.6L V6	RY265T	🇺🇸 US 🇨🇦 CA	T-Series	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 3.6L V6	RY1991	🇺🇸 US 🇨🇦 CA	Functions: Multi-Function Relay	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.

Steering Wheel Audio Control Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13550478	🇺🇸 US 🇨🇦 CA	Fits RightPremium Luxury Fitment notes — GM GENUINE 13550478 Fits: RightPremium LuxuryLeather Interior Trim (H2U), Steering Wheel with Automatic Heat (KI3), Forward Collision Alert (UEU)Labeled 13550478, 13545468, 13540500, 13535950, 13532928, 13529452Jet Black or: RightPremium LuxuryLeather Interior Trim Color (HEG) or Leather Interior Trim Configuration (HMS) or Leather Interior Trim Configuration (HTW) or Leather Interior Trim Configuration/Color (H0Y), Steering Wheel with Automatic Heat (KI3)Labeled 13550478, 13545468, 13540500, 13535950, 13532928, 13529452Jet Black or: RightSportLeather Interior Trim Color (HV9), Leather Interior Trim Color (H1Y), Leather Interior Trim (H2U), Steering Wheel with Automatic Heat (KI3), Forward Collision Alert (UEU)Labeled 13550478, 13545468, 13540500, 13535950, 13532928, 13529452Jet Black or: RightSportLeather Interior Trim Configuration (HMS), Steering Wheel with Automatic Heat (KI3), Forward Collision Alert (UEU)Labeled 13550478, 13545468, 13540500, 13535950, 13532928, 13529452Jet Black	View on Amazon

This table covers the Steering Wheel Audio 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.

Traction / Stability Control Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	84627138	🇺🇸 US 🇨🇦 CA	JET BLACKFlexride Mode System Switch (URC)	View on Amazon

This table covers the Traction / Stability 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.

Trunk Lid / Tailgate Release Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	84389158	🇺🇸 US 🇨🇦 CA	JET BLACKDRIVER DOOR	View on Amazon

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.

Turn Signal Switch

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	84614547	🇺🇸 US 🇨🇦 CA	Intelligent High Beam Control (TQ5), Glarefree Highbeam, Auto Dynamic Control Headlamps (UVG), High Beam Auto Control, Increased Output Headlamp (UWN)	View on Amazon
WELLS Fits: 3.6L V6	1S17015	🇺🇸 US 🇨🇦 CA	with Automatic Headlight Dimmer	View on Amazon
WELLS Fits: 3.6L V6	1S17504	🇺🇸 US 🇨🇦 CA	Mounting Hardware Included: No Fitment notes — WELLS 1S17504 Mounting Hardware Included: No with Automatic Headlight Dimmer	View on Amazon
WELLS Fits: 3.6L V6	1S17699	🇺🇸 US 🇨🇦 CA	without Automatic Headlight Dimmer	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 Fits: 3.6L V6	84649241	🇺🇸 US 🇨🇦 CA		View on Amazon
STANDARD MOTOR PRODUCTS Fits: 3.6L V6	WP674	🇺🇸 US 🇨🇦 CA	Black Fitment notes — STANDARD MOTOR PRODUCTS WP674 Black Column Mountedwithout Rain Sensitive Wipers	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 3.6L V6	WP704	🇺🇸 US 🇨🇦 CA	Column Mounted	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.

Wiring Relay

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 3.6L V6	13468935	🇺🇸 US 🇨🇦 CA	ELECTRONIC, 5 BLADEELECTRONIC RELAY ISO MINI SPDT	View on Amazon
GM GENUINE Fits: 3.6L V6	13468934	🇺🇸 US 🇨🇦 CA	4-Terminal 630 Series Single Pole Double Throw MiniFrom Block Assembly	View on Amazon
GM GENUINE Fits: 3.6L V6	84310952	🇺🇸 US 🇨🇦 CA	Connector Gender: Female	View on Amazon

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 2021 Cadillac XT6

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: Oil Pressure Sender / Switch and A/C Refrigerant Pressure Switch .

Frequently Asked Questions

How many electrical switch & relay parts fit the 2021 Cadillac XT6?

Our catalog currently lists 71 electrical switch & relay parts for the 2021 Cadillac XT6 across 32 subcategories and 13 brands, covering both the 2.0L L4 Turbocharged and the 3.6L V6. Each part is matched to the engine(s) it fits.

Do electrical switch & relay parts differ between 2021 Cadillac XT6 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 2021 Cadillac XT6?

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 2021 Cadillac XT6 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 2021 Cadillac XT6?

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 2021 Cadillac XT6

Belt Drive Body & Lamp Assembly Brake & Wheel Hub Cooling System Drivetrain Electrical Electrical Connector Engine Exhaust & Emission Fuel & Air Heat & Air Conditioning Ignition Interior Steering Suspension Automatic Transmission Wheel

Electrical Switch & Relay Parts for Other Cadillac XT6 Years

2025 Cadillac XT6 2024 Cadillac XT6 2023 Cadillac XT6 2022 Cadillac XT6 2020 Cadillac XT6

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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.

Published by AutoFactsDB from manufacturer application data. How fitment is matched Report a fitment error