2025 Cadillac CT5 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

This group shows a single part: GM GENUINE 42893173.

This table covers the Alternator / Generator bolts. Read more

GM GENUINE supplies both parts for the 2025 Cadillac CT5.

Listed part numbers: GM GENUINE 11589134 and GM GENUINE 11588754.

This table covers the sirens in the anti-theft system. Read more

One part is listed for the 2025 Cadillac CT5 — GM GENUINE 13569122.

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

13 Battery parts are listed for the 2025 Cadillac CT5, from ACDELCO, DEKA, EXIDE and 3 other brands. DEKA 9A48 carries the "Popular" badge.

The AGM (Extended Life) section lists 7 options from DEKA, ACDELCO, BOSCH and 2 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A48 is listed in this group.

The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT85094R is listed in this group.

5 ungrouped parts are not assigned to a grade, with the same engine-level match.

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

4 Battery Cable parts for the 2025 Cadillac CT5 come from GM GENUINE.

This group includes GM GENUINE 42934097, GM GENUINE 86801288 and GM GENUINE 42934094 and the remaining parts above.

This table covers the clamps and brackets that secure the battery. Read more

This group shows a single part: GM GENUINE 11609585.

This table covers the Battery Terminal Bolt nuts. Read more

This group shows a single part: GM GENUINE 11610091.

This table covers the Battery Vent tubes. Read more

This group shows a single part: GM GENUINE 85665279.

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

This group shows a single part: GM GENUINE 13559486.

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

This group shows a single part: GM GENUINE 84930206.

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

One part is listed for the 2025 Cadillac CT5 — GM GENUINE 84215440.

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

This group shows a single part: GM GENUINE 12740833.

This table covers the Engine Control Module (ECM Computer) bolts. Read more

One part is listed for the 2025 Cadillac CT5 — GM GENUINE 11519377.

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

This group shows a single part: GM GENUINE 84942082.

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

9 Fuse parts are listed for the 2025 Cadillac CT5, from GM GENUINE and ACDELCO. GM GENUINE 15305191 carries the "Popular" badge.

The 100 Amp section lists 1 option from GM GENUINE — grouped under the catalog's "100 Amp" designation — the notes column spells out what sets them apart. GM GENUINE 84070942 is listed in this group.

In the 150 Amp grade, GM GENUINE supplies 1 part: grouped under the catalog's "150 Amp" designation — the notes column spells out what sets them apart. A representative part number is GM GENUINE 84070922.

The 175 Amp section lists 1 option from GM GENUINE — grouped under the catalog's "175 Amp" designation — the notes column spells out what sets them apart. GM GENUINE 15305191 is listed in this group.

The 250 Amp section lists 1 option from GM GENUINE — grouped under the catalog's "250 Amp" designation — the notes column spells out what sets them apart. GM GENUINE 84116255 is listed in this group.

In the 350 Amp grade, GM GENUINE supplies 1 part: grouped under the catalog's "350 Amp" designation — the notes column spells out what sets them apart. A representative part number is GM GENUINE 84116257.

The 5 Amp section lists 1 option from ACDELCO — grouped under the catalog's "5 Amp" designation — the notes column spells out what sets them apart. ACDELCO ATC525 is listed in this group.

The 50 Amp section lists 1 option from ACDELCO — grouped under the catalog's "50 Amp" designation — the notes column spells out what sets them apart. ACDELCO MAX50 is listed in this group.

The 70 Amp section lists 2 options from GM GENUINE — grouped under the catalog's "70 Amp" designation — the notes column spells out what sets them apart. GM GENUINE 84070937 is listed in this group.

This group includes GM GENUINE 15305191, GM GENUINE 84070942 and GM GENUINE 84070922 and the remaining parts above.

This table covers the Hands Free Vehicle Access 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

This group shows a single part: GM GENUINE 85860567.

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

GM GENUINE supplies both parts for the 2025 Cadillac CT5.

Listed part numbers: GM GENUINE 84849439 and GM GENUINE 84849440.

This table covers the Jumper cables. 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

2 Jumper Cable parts for the 2025 Cadillac CT5 come from GM GENUINE.

This group includes GM GENUINE 42900364 and GM GENUINE 86801281.

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

9 Keyless Entry Remote parts for the 2025 Cadillac CT5 come from 2 brands — GM GENUINE and DORMAN. The "Popular" part is DORMAN 99762ST.

Listed part numbers: DORMAN 99762ST, GM GENUINE 13560906 and GM GENUINE 85043355, plus the other parts above.

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

One part is listed for the 2025 Cadillac CT5 — GM GENUINE 84983035.

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

6 Parking Aid Sensor parts for the 2025 Cadillac CT5 come from 2 brands — GM GENUINE and VARIOUS MFR. The "Popular" part is GM GENUINE 84586217.

This group includes GM GENUINE 84586217, GM GENUINE 87821667 and GM GENUINE 87821666 and the remaining 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

7 Parking Aid Sensor Bracket parts for the 2025 Cadillac CT5 come from GM GENUINE.

Listed part numbers: GM GENUINE 42799262, GM GENUINE 42799263 and GM GENUINE 42799274, plus the other 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

One part is listed for the 2025 Cadillac CT5 — GM GENUINE 13563696.

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

2 Rain Sensor parts for the 2025 Cadillac CT5 come from GM GENUINE.

Part numbers include GM GENUINE 85880852 and GM GENUINE 85880857.

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

2 Serial Data Gateway Module parts for the 2025 Cadillac CT5 come from GM GENUINE.

Listed part numbers: GM GENUINE 13545362 and GM GENUINE 13558602.

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

3 Side Object Sensor Module parts for the 2025 Cadillac CT5 come from GM GENUINE.

This group includes GM GENUINE 85698872, GM GENUINE 86558606 and GM GENUINE 85698873.

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

9 Speed Sensor parts are listed for the 2025 Cadillac CT5, from GM GENUINE and STANDARD MOTOR PRODUCTS. GM GENUINE 24043446 carries the "Popular" badge.

Listed part numbers: GM GENUINE 24043446, GM GENUINE 24296964 and GM GENUINE 24060867, plus the other parts above.

This table covers the Starter bolts. Read more

3 Starter Bolt parts for the 2025 Cadillac CT5 come from GM GENUINE.

Listed part numbers: GM GENUINE 11588740, GM GENUINE 11588749 and GM GENUINE 11610633.

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

4 Starter Motor parts for the 2025 Cadillac CT5 come from 4 brands — GM GENUINE, WAI GLOBAL, REMY and 1 other brand.

The New section lists 2 options from GM GENUINE and WAI GLOBAL — brand-new units rather than rebuilt ones. GM GENUINE 12740951 is listed in this group.

The Remanufactured section lists 2 options from REMY and TERREPOWER — factory-rebuilt units with new wear components. REMY 26015 is listed in this group.

This group includes GM GENUINE 12740951, WAI GLOBAL 16029N and REMY 26015 and the remaining parts above.

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

One part is listed for the 2025 Cadillac CT5 — GM GENUINE 12657796.

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

One part is listed for the 2025 Cadillac CT5 — GM GENUINE 85532096.