2018 Cadillac XTS Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

22 Alternator / Generator parts are listed for the 2018 Cadillac XTS, from REMY, TERREPOWER, GM GENUINE and 7 other brands. GM GENUINE 23106528 carries the "Popular" badge. 3 parts fit every engine; the other 19 are engine-specific.

In the New grade, GM GENUINE, WAI GLOBAL, SKP and 3 other brands supply 9 parts: brand-new units rather than rebuilt ones. A representative part number is GM GENUINE 23106528.

In the Remanufactured grade, REMY, TERREPOWER, DENSO and 4 other brands supply 13 parts: factory-rebuilt units with new wear components. A representative part number is DENSO 2101202.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

2 Alternator / Generator Pulley parts for the 2018 Cadillac XTS come from 2 brands — CONTINENTAL and LITENS. 1 part fits every engine; the other 1 is engine-specific.

This group includes CONTINENTAL 49986 and LITENS 920860A.

This table covers the Anti-Theft control modules. Read more

This group shows a single part: GM GENUINE 13500158.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

7 Battery parts for the 2018 Cadillac XTS come from 7 brands — DEKA, LUCAS, ACDELCO and 4 other brands. The "Popular" part is DEKA 9A48. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

In the AGM (Extended Life) grade, DEKA, LUCAS, ACDELCO and 3 other brands supply 6 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A48.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT68048.

This group includes DEKA 9A48, LUCAS LBAGM004A and ACDELCO 48AGM and the remaining parts above.

This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

GM GENUINE supplies the 6 Battery Cable parts for the 2018 Cadillac XTS. GM GENUINE 84004725 carries the "Popular" badge. 3 parts fit every engine; the other 3 are engine-specific.

Part numbers include GM GENUINE 84004725, GM GENUINE 22885269 and GM GENUINE 22893833, among others listed above.

This table covers the Battery Current 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. Read more

3 Battery Current Sensor parts are listed for the 2018 Cadillac XTS, from GM GENUINE, STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 2018 XTS.

Part numbers include GM GENUINE 13505369, STANDARD MOTOR PRODUCTS SBC111 and WELLS 5S6706.

This table covers the trays the battery sits in. Read more

This group shows a single part: TECHPRO GM2995119.

This table covers the Battery Vent tubes. Read more

One part is listed for the 2018 Cadillac XTS — GM GENUINE 23318700.

This table covers the body-control modules that run lighting, locks and wipers. Read more

One part is listed for the 2018 Cadillac XTS — GM GENUINE 13528945.

This table covers the brackets that mount the Body Control Module (BCM). Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2018 Cadillac XTS — GM GENUINE 22818730.

This table covers the resettable circuit breakers in this vehicle's electrical system. Read more

4 Circuit Breaker parts for the 2018 Cadillac XTS come from 2 brands — STANDARD MOTOR PRODUCTS and BUSSMANN. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

Part numbers include BUSSMANN CB21125, STANDARD MOTOR PRODUCTS FH58 and STANDARD MOTOR PRODUCTS FH59, among others listed above.

This table covers the engine-control modules that run fuel, spark and emissions. Read more

GM GENUINE supplies the 3 Engine Control Module (ECM Computer) parts for the 2018 Cadillac XTS.

Listed part numbers: GM GENUINE 12667002, GM GENUINE 12704475 and GM GENUINE 19432268.

This table covers the brackets that mount the Engine Control Module (ECM Computer). Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2018 Cadillac XTS — GM GENUINE 22859944.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

42 Fuse parts for the 2018 Cadillac XTS come from 2 brands — BUSSMANN and GM GENUINE. The "Popular" part is BUSSMANN ATM15. They are grouped as 10 Amp, 100 Amp, 15 Amp, 150 Amp, 20 Amp, 225 Amp, 25 Amp, 250 Amp, 3 Amp, 30 Amp, 300 Amp, 350 Amp, 4 Amp, 40 Amp, 450 Amp, 5 Amp, 50 Amp, 60 Amp, 7.5 Amp, 70 Amp and 80 Amp, with 20 Amp the largest group at 5 parts from BUSSMANN.

This table covers the fuse blocks that hold this vehicle's fuses. Read more

3 Fuse Block parts are listed for the 2018 Cadillac XTS, from DORMAN and GM GENUINE. All of them fit every engine offered in the 2018 XTS.

This group includes DORMAN 956555, DORMAN 956430 and GM GENUINE 20815889.

This table covers the Garage Door Opener modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

One part is listed for the 2018 Cadillac XTS — GM GENUINE 22850908.

This table covers the horns mounted in the front of the vehicle. Read more

15 Horn parts for the 2018 Cadillac XTS come from 2 brands — FIAMM and GM GENUINE. The "Popular" part is FIAMM 7210223. 14 parts fit every engine; the other 1 is engine-specific.

The Accessory Replacement section lists 7 options from FIAMM — grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. FIAMM 7210223 is listed in this group.

In the Standard Replacement grade, FIAMM and GM GENUINE supply 8 parts: built to original-equipment specification. A representative part number is FIAMM 7201223.

This table covers the horn contacts in the steering column. Read more

This group shows a single part: GM GENUINE 23311271.

This table covers the receivers that pick up the key-fob unlock signal. Read more

GM GENUINE supplies the 3 Keyless Entry Module / Receiver parts for the 2018 Cadillac XTS. All of them fit every engine offered in the 2018 XTS.

Part numbers include GM GENUINE 13586853, GM GENUINE 13523241 and GM GENUINE 13523223.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

GM GENUINE supplies the 3 Keyless Entry Remote parts for the 2018 Cadillac XTS. All of them fit every engine offered in the 2018 XTS.

Listed part numbers: GM GENUINE 13544033, GM GENUINE 13544034 and GM GENUINE 13544042.

This table covers the replacement shells for the key fob. Read more

One part is listed for the 2018 Cadillac XTS — DORMAN 92053.

This table covers the modules that control the exterior lighting. Read more

GM GENUINE supplies the 3 Lighting Control Module (LCM) parts for the 2018 Cadillac XTS. All of them fit every engine offered in the 2018 XTS.

Part numbers include GM GENUINE 84124789, GM GENUINE 84124790 and GM GENUINE 84124791.

This table covers the Park Assist (PAS) Camera modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

2 Park Assist (PAS) Camera Module parts for the 2018 Cadillac XTS come from GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include GM GENUINE 84243364 and GM GENUINE 84243365.

This table covers the ultrasonic park-aid sensors in the bumper. 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. Read more

7 Parking Aid Sensor parts are listed for the 2018 Cadillac XTS, from DORMAN, GM GENUINE, BOSCH and 2 other brands. BOSCH 0263043553 carries the "Popular" badge. All of them fit every engine offered in the 2018 XTS.

Listed part numbers: BOSCH 0263043553, STANDARD MOTOR PRODUCTS PPS46 and DORMAN 684048, plus the other parts above.

This table covers the brackets that mount the Parking Aid Sensor. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

GM GENUINE supplies the 8 Parking Aid Sensor Bracket parts for the 2018 Cadillac XTS. 6 parts fit every engine; the other 2 are engine-specific.

This group includes GM GENUINE 84493025, GM GENUINE 84493135 and GM GENUINE 84493136 and the remaining parts above.

This table covers the totally-integrated power modules that distribute body electrical power. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

3 Power Supply Module (TIPM) parts for the 2018 Cadillac XTS come from 2 brands — GM GENUINE and SHEE-MAR. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

Part numbers include GM GENUINE 13599326, GM GENUINE 23368732 and SHEE-MAR SM2320.

This table covers the Rain 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. Read more

One part is listed for the 2018 Cadillac XTS — HELLA 011012881.

This table covers the Serial Data Gateway modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

One part is listed for the 2018 Cadillac XTS — GM GENUINE 13599318.

This table covers the Side Object Sensor modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

GM GENUINE supplies the 3 Side Object Sensor Module parts for the 2018 Cadillac XTS. All of them fit every engine offered in the 2018 XTS.

This group includes GM GENUINE 42625293, GM GENUINE 42625292 and GM GENUINE 84112235.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

7 Speed Sensor parts for the 2018 Cadillac XTS come from 5 brands — GM GENUINE, DELPHI, HOLSTEIN and 2 other brands. The "Popular" part is GM GENUINE 24262388. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

The Economy section lists 1 option from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2VSS0145 is listed in this group.

Standard Replacement: 6 parts, from GM GENUINE, DELPHI, STANDARD MOTOR PRODUCTS and 1 other brand. A representative part number is GM GENUINE 24262388.

Listed part numbers: GM GENUINE 24262388, HOLSTEIN 2VSS0145 and GM GENUINE 24262387, plus the other parts above.

This table covers the Speed Sensor Reluctor rings. Read more

2 Speed Sensor Reluctor Ring parts for the 2018 Cadillac XTS come from GM GENUINE. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

This group includes GM GENUINE 24232557 and GM GENUINE 24223802.

This table covers the seals at the Speed Sensor. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

GM GENUINE supplies both parts for the 2018 Cadillac XTS. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: GM GENUINE 22829060 and GM GENUINE 24234865.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

21 Starter Motor parts are listed for the 2018 Cadillac XTS, from BOSCH, PURE ENERGY, REMY and 7 other brands. ACDELCO 3371175 carries the "Popular" badge. 2 parts fit every engine; the other 19 are engine-specific.

New: 9 parts, from GM GENUINE, ACDELCO, TYC and 5 other brands. A representative part number is ACDELCO 3371175.

Remanufactured: 12 parts, from BOSCH, FVP, PURE ENERGY and 4 other brands. A representative part number is ACDELCO 3362088A.

This table covers the Starter Motor Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on. Read more

This group shows a single part: GM GENUINE 12608820.

This table covers the Video control modules. Read more

GM GENUINE supplies both parts for the 2018 Cadillac XTS. All of them fit every engine offered in the 2018 XTS.

This group includes GM GENUINE 84471308 and GM GENUINE 84503341.

This table covers the Yaw 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. Read more

This group shows a single part: GM GENUINE 13514500.