2021 Cadillac CT4 Automatic Transmission Parts

This table covers the control units that command automatic-transmission shifts. Read more

2 Automatic Transmission Control Unit (TCU) parts are listed for the 2021 Cadillac CT4, from ACDELCO and GM GENUINE.

This group includes ACDELCO 24043414 and GM GENUINE 24070740.

This table covers the Carrier Thrust bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

This group shows a single part: GM GENUINE 24264380.

This table covers the transmission or transfer-case housings. Read more

This group shows a single part: GM GENUINE 24043509.

This table covers the Case covers. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24056938.

This table covers the Case plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

This group shows a single part: GM GENUINE 11548770.

This table covers the vents on a transmission or axle housing. Read more

GM GENUINE supplies both parts for the 2021 Cadillac CT4.

This group includes GM GENUINE 24261261 and GM GENUINE 23156298.

This table covers the Clutch Apply plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

GM GENUINE supplies the 5 Clutch Apply Plate parts for the 2021 Cadillac CT4.

Part numbers include GM GENUINE 24270887, GM GENUINE 24292208 and GM GENUINE 24292209, among others listed above.

This table covers the Clutch Apply rings. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24297767.

This table covers the Clutch housings. Read more

2 Clutch Housing parts for the 2021 Cadillac CT4 come from GM GENUINE.

This group includes GM GENUINE 24286930 and GM GENUINE 24050541.

This table covers the Clutch Housing Thrust bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

3 Clutch Housing Thrust Bearing parts for the 2021 Cadillac CT4 come from GM GENUINE.

Listed part numbers: GM GENUINE 24264380, GM GENUINE 24264381 and GM GENUINE 24266481.

This table covers the pistons that apply a clutch pack. Read more

GM GENUINE supplies the 5 Clutch Pack Piston parts for the 2021 Cadillac CT4.

This group includes GM GENUINE 24270830, GM GENUINE 24270841 and GM GENUINE 24294274 and the remaining parts above.

This table covers the seals at the Clutch Pack Piston Dam. 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 the 5 Clutch Pack Piston Dam / Seal parts for the 2021 Cadillac CT4.

Listed part numbers: GM GENUINE 24042082, GM GENUINE 24044534 and GM GENUINE 24251833, plus the other parts above.

This table covers the Clutch plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

GM GENUINE supplies the 5 Clutch Plate parts for the 2021 Cadillac CT4. GM GENUINE 24270644 carries the "Popular" badge.

This group includes GM GENUINE 24270644, GM GENUINE 24270889 and GM GENUINE 24270780 and the remaining parts above.

This table covers the clutch-plate packs inside the transmission or transfer case. Read more

3 Clutch Plate Pack parts for the 2021 Cadillac CT4 come from 2 brands — RAYBESTOS POWERTRAIN and GM GENUINE.

Listed part numbers: GM GENUINE 24298380, RAYBESTOS POWERTRAIN RCP96524 and RAYBESTOS POWERTRAIN RGPZ279.

This table covers the Clutch Plate Retaining rings. Read more

5 Clutch Plate Retaining Ring parts for the 2021 Cadillac CT4 come from GM GENUINE.

Part numbers include GM GENUINE 24042087, GM GENUINE 24042088 and GM GENUINE 24042089, among others listed above.

This table covers the Drive Sprocket bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 84517834.

This table covers the Extension Housing bolts. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 11515767.

This table covers the gaskets that seal the Extension Housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24273850.

This table covers the seals at the Extension Housing. 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

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24271579.

This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for. Read more

9 Filter parts for the 2021 Cadillac CT4 come from 5 brands — VARIOUS MFR, GM GENUINE, RAYBESTOS POWERTRAIN and 2 other brands. The "Popular" part is GM GENUINE 24295812.

The Economy section lists 3 options from VARIOUS MFR — the catalog's value-priced group. VARIOUS MFR PT99576 is listed in this group.

In the Standard Replacement grade, GM GENUINE and RAYBESTOS POWERTRAIN supply 4 parts: built to original-equipment specification. A representative part number is GM GENUINE 24295812.

2 further parts sit outside the graded sections, with the same engine-level match.

This group includes GM GENUINE 24295812, VARIOUS MFR PT99576 and VARIOUS MFR PT99576X and the remaining parts above.

This table covers the heat exchangers that cool transmission fluid. Typical signs include fluid that overheats, a leak at the cooler fittings, or milky fluid that says coolant and ATF have mixed. Flush the lines when you replace a cooler. Cross-contamination is how a small leak becomes a transmission job. Read more

3 Fluid Cooler parts for the 2021 Cadillac CT4 come from GM GENUINE.

This group includes GM GENUINE 84732706, GM GENUINE 24062227 and GM GENUINE 86540125.

This table covers the Fluid Cooler Control valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 84518145.

This table covers the Fluid Cooler Line hoses. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

2 Fluid Cooler Line / Hose parts for the 2021 Cadillac CT4 come from GM GENUINE.

Listed part numbers: GM GENUINE 24291374 and GM GENUINE 24298190.

This table covers the seals at the Fluid Cooler Line / Hose. 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

3 Fluid Cooler Line / Hose Seal parts are listed for the 2021 Cadillac CT4, from GM GENUINE and SKP.

Listed part numbers: GM GENUINE 85628205, GM GENUINE 24237658 and SKP SK66219.

This table covers the Fluid Cooler Line clips. Read more

2 Fluid Cooler Line Clip parts for the 2021 Cadillac CT4 come from GM GENUINE.

This group includes GM GENUINE 15698443 and GM GENUINE 11547271.

This table covers the pans that hold automatic-transmission fluid. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24045037.

This table covers the gaskets that seal the Fluid Pan. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

5 Fluid Pan Gasket parts for the 2021 Cadillac CT4 come from 3 brands — GM GENUINE, FEL-PRO and ELRING. The "Popular" part is GM GENUINE 24260071.

Part numbers include GM GENUINE 24260071, ELRING 732270 and FEL-PRO TOS18776, among others listed above.

This table covers the Fluid Pan magnets. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24274971.

This table covers the Fluid pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit. Read more

2 Fluid Pump parts for the 2021 Cadillac CT4 come from GM GENUINE.

This group includes GM GENUINE 24048561 and GM GENUINE 24071202.

This table covers the Fluid Pump bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

This group shows a single part: GM GENUINE 24259160.

This table covers the gaskets that seal the Fluid Pump. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24047734.

This table covers the seals at the Fluid Pump. 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 2021 Cadillac CT4.

Part numbers include GM GENUINE 24290889 and GM GENUINE 24270191.

This table covers the Fluid temperature sensors. Typical signs include hard cold starts, a fan that never comes on, or a gauge that disagrees with the scan tool. A sensor that reads open or shorted is usually the part; an implausible-but-smooth reading can be wiring. Read more

This group shows a single part: GM GENUINE 24271129.

This table covers the gasket kits for this job. Typical signs include the leaks that sent this assembly to the bench. Confirm the kit matches the opening you are sealing; unused leftover pieces often belong to another configuration. Read more

One part is listed for the 2021 Cadillac CT4 — ULTRA-POWER 66219.

This table covers the input carriers in the planetary gearset. Read more

This group shows a single part: GM GENUINE 24296773.

This table covers the seals at the Manual Shaft. 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 2021 Cadillac CT4.

Part numbers include GM GENUINE 24288402 and GM GENUINE 24235861.

This table covers the Manual Shift shafts. Read more

This group shows a single part: GM GENUINE 24225445.

This table covers the O-rings and seals at this joint. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24079331.

This table covers the output carriers in the planetary gearset. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24046934.

This table covers the Output Carrier Internal gears. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24047546.

This table covers the Output Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24289968.

This table covers the seals at the Output Shaft. 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

2 Output Shaft Seal parts for the 2021 Cadillac CT4 come from GM GENUINE.

Part numbers include GM GENUINE 24265265 and GM GENUINE 24290349.

This table covers the brackets that mount the Park Pawl Actuator. 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 2021 Cadillac CT4 — GM GENUINE 24285402.

This table covers the parking pawls that lock the transmission in Park. Read more

This group shows a single part: GM GENUINE 24297835.

This table covers the Plug adapters. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 8654382.

This table covers the reaction carriers in the planetary gearset. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24050870.

This table covers the Reaction Carrier Thrust bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24264381.

This table covers the Reaction Internal gears. Read more

ACDELCO supplies both parts for the 2021 Cadillac CT4.

Part numbers include ACDELCO 24293106 and ACDELCO 24281364.

This table covers the rebuild kits for this assembly. Read more

4 Rebuild Kit parts are listed for the 2021 Cadillac CT4, from PA CARGO and TRANSTEC.

In the Banner Kit (Overhaul Kit + Friction Clutch Plates) grade, PA CARGO supplies 1 part: grouped under the catalog's "Banner Kit (Overhaul Kit + Friction Clutch Plates)" designation — the notes column spells out what sets them apart. A representative part number is PA CARGO DK13800AS.

The Master Kit (Overhaul Kit + Friction & Steel Clutch Plates) section lists 1 option from PA CARGO — grouped under the catalog's "Master Kit (Overhaul Kit + Friction & Steel Clutch Plates)" designation — the notes column spells out what sets them apart. PA CARGO DK13800A is listed in this group.

In the Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings) grade, PA CARGO and TRANSTEC supply 2 parts: grouped under the catalog's "Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings)" designation — the notes column spells out what sets them apart. A representative part number is PA CARGO K138900A.

Part numbers include PA CARGO DK13800AS, PA CARGO DK13800A and PA CARGO K138900A, among others listed above.

This table covers the Retaining rings. Read more

GM GENUINE supplies the 5 Retaining Ring parts for the 2021 Cadillac CT4. GM GENUINE 24266577 carries the "Popular" badge.

Listed part numbers: GM GENUINE 24266577, GM GENUINE 24271123 and GM GENUINE 24270803, plus the other parts above.

This table covers the Shift 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

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 84941910.

This table covers the brackets that mount the Shift Cable. 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 2021 Cadillac CT4 — GM GENUINE 84683646.

This table covers the Snap rings. Read more

This group shows a single part: GM GENUINE 24298381.

This table covers the Sun gears. Read more

GM GENUINE supplies the 5 Sun Gear parts for the 2021 Cadillac CT4.

This group includes GM GENUINE 24252073, GM GENUINE 24293107 and GM GENUINE 24294266 and the remaining parts above.

This table covers the Sun Gear bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

GM GENUINE supplies the 6 Sun Gear Bearing parts for the 2021 Cadillac CT4. GM GENUINE 24264380 carries the "Popular" badge.

This group includes GM GENUINE 24264380, GM GENUINE 24270489 and GM GENUINE 24271125 and the remaining parts above.

This table covers the Sun Gear shafts. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24294477.

This table covers the Torque converters. Typical signs include a sulfur smell, rattling substrate, or an efficiency code. Confirm CARB vs Federal certification in the notes before ordering. Read more

This group shows a single part: GM GENUINE 24049850.

This table covers the hardware around the torque converter and bellhousing. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 24205900.

This table covers the Torque Converter bolts. Read more

One part is listed for the 2021 Cadillac CT4 — GM GENUINE 11588468.

This table covers the seals at the Torque Converter Shaft. 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

4 Torque Converter Shaft Seal parts are listed for the 2021 Cadillac CT4, from GM GENUINE and PA CARGO.

Listed part numbers: GM GENUINE 24259216, GM GENUINE 24266709 and GM GENUINE 24271630, plus the other parts above.

This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid. Read more

9 Transmission Fluid parts for the 2021 Cadillac CT4 come from 5 brands — LUBEGARD, VALVOLINE, PENTOSIN and 2 other brands. The "Popular" part is ACDELCO 104107.

The Dexron section lists 1 option from ACDELCO — grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. ACDELCO 104107 is listed in this group.

The Multi-Vehicle section lists 3 options from VALVOLINE, LIQUI MOLY and LUBEGARD — grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. VALVOLINE 888460 is listed in this group.

5 further parts sit outside the graded sections, with the same engine-level match.

This group includes ACDELCO 104107, VALVOLINE 888460 and LIQUI MOLY 22257 and the remaining parts above.

This table covers the conditioners and additives used with this transmission fluid. Read more

6 Transmission Fluid Additive parts for the 2021 Cadillac CT4 come from LUBEGARD. The "Popular" part is LUBEGARD 19610.

Part numbers include LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 19689, among others listed above.

This table covers the mounts that hold the transmission to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

4 Transmission Mount parts are listed for the 2021 Cadillac CT4, from DEA / MARMON RIDE CONTROL and GM GENUINE.

This group includes DEA / MARMON RIDE CONTROL A20341, DEA / MARMON RIDE CONTROL A20343 and GM GENUINE 84782117 and the remaining parts above.

This table covers the seals at the Turbine Shaft. 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

4 Turbine Shaft Seal parts for the 2021 Cadillac CT4 come from GM GENUINE.

Part numbers include GM GENUINE 24270632, GM GENUINE 24270633 and GM GENUINE 24270634, among others listed above.

This table covers the valve bodies that route hydraulic pressure inside the transmission. Read more

This group shows a single part: GM GENUINE 24071206.

This table covers the check balls inside the transmission valve body. Read more

GM GENUINE supplies both parts for the 2021 Cadillac CT4.

Part numbers include GM GENUINE 96020431 and GM GENUINE 24253810.

This table covers the Valve Body Separator plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

GM GENUINE supplies both parts for the 2021 Cadillac CT4.

Part numbers include GM GENUINE 24288084 and GM GENUINE 24052204.