2026 Cadillac CT5 Drivetrain Parts

This table covers the Axle / Differential assemblies. Read more

One part is listed for the 2026 Cadillac CT5 — GM GENUINE 84821401.

This table covers the seals at the Axle Intermediate 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

One part is listed for the 2026 Cadillac CT5 — GM GENUINE 23269758.

This table covers the Axle shafts. Read more

GM GENUINE supplies both parts for the 2026 Cadillac CT5.

Listed part numbers: GM GENUINE 84479766 and GM GENUINE 84537631.

This table covers the seals where an axle shaft exits the 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

2 Axle Shaft Seal parts for the 2026 Cadillac CT5 come from GM GENUINE.

Part numbers include GM GENUINE 291367 and GM GENUINE 23269761.

This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes. Read more

2 CV Axle parts for the 2026 Cadillac CT5 come from GM GENUINE.

Listed part numbers: GM GENUINE 87829453 and GM GENUINE 87829454.

This table covers the CV Intermediate shafts. Read more

One part is listed for the 2026 Cadillac CT5 — GM GENUINE 84632509.

This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn. Read more

This group shows a single part: GM GENUINE 84788028.

This table covers the CV Joint Lock rings. Read more

One part is listed for the 2026 Cadillac CT5 — GM GENUINE 84210850.

This table covers the Differential Carrier bolts. Read more

GM GENUINE supplies the 3 Differential Carrier Bolt parts for the 2026 Cadillac CT5.

Listed part numbers: GM GENUINE 11611275, GM GENUINE 11610911 and GM GENUINE 11609607.

This table covers the Differential Carrier 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

2 Differential Carrier Bushing parts for the 2026 Cadillac CT5 come from GM GENUINE.

Part numbers include GM GENUINE 20762354 and GM GENUINE 20762248.

This table covers the Differential control modules. Read more

GM GENUINE supplies both parts for the 2026 Cadillac CT5.

Part numbers include GM GENUINE 86586531 and GM GENUINE 86396173.

This table covers the Differential Fill drain plugs. Read more

This group shows a single part: GM GENUINE 84479772.

This table covers the seals at the differential pinion yoke. 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

This group shows a single part: GM GENUINE 84479771.

This table covers the driveshafts that carry torque from the transmission or transfer case. Read more

GM GENUINE supplies both parts for the 2026 Cadillac CT5.

Part numbers include GM GENUINE 86519101 and GM GENUINE 86519100.

This table covers the Drive Shaft bolts. Read more

This group shows a single part: GM GENUINE 11546698.

This table covers the Drive Shaft Flange yokes. Read more

2 Drive Shaft Flange Yoke parts for the 2026 Cadillac CT5 come from GM GENUINE.

This group includes GM GENUINE 85514204 and GM GENUINE 85514206.

This table covers the Drive Shaft retainers. Read more

GM GENUINE supplies both parts for the 2026 Cadillac CT5.

This group includes GM GENUINE 10363385 and GM GENUINE 86519122.

This table covers the seals at the Drive 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

This group shows a single part: ELRING B16870.

This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle. Read more

6 Gear Oil parts for the 2026 Cadillac CT5 come from 2 brands — VALVOLINE and ACDELCO. The "Popular" part is VALVOLINE VV975.

The SAE 75W-85 section lists 1 option from ACDELCO — grouped under the catalog's "SAE 75W-85" designation — the notes column spells out what sets them apart. ACDELCO 104122 is listed in this group.

The SAE 75W-90 section lists 5 options from VALVOLINE and ACDELCO — grouped under the catalog's "SAE 75W-90" designation — the notes column spells out what sets them apart. VALVOLINE VV975 is listed in this group.

This group includes VALVOLINE VV975, ACDELCO 104122 and VALVOLINE 889785 and the remaining parts above.

This table covers the Transfer Case control modules. Read more

One part is listed for the 2026 Cadillac CT5 — GM GENUINE 42862119.

This table covers the fluids specified for the transfer case. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable. Read more

2 Transfer Case Fluid parts for the 2026 Cadillac CT5 come from 2 brands — ACDELCO and VALVOLINE.

Listed part numbers: ACDELCO 104044 and VALVOLINE 888170.

This table covers the Transfer Case 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 19179158.

This table covers the Transfer Case Input shafts. Read more

This group shows a single part: GM GENUINE 84025382.

This table covers the Transfer Case Input 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

This group shows a single part: GM GENUINE 89059519.

This table covers the Transfer Case Input Shaft 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 24267009.

This table covers the Transfer Case Oil drain plugs. Read more

This group shows a single part: GM GENUINE 84517829.

This table covers the wear sleeves used to restore a Transfer Case Oil Pump Housing seal surface. Read more

This group shows a single part: GM GENUINE 85010717.

This table covers the Transfer Case Output shafts. Read more

One part is listed for the 2026 Cadillac CT5 — GM GENUINE 84517839.

This table covers the Transfer Case 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

GM GENUINE supplies both parts for the 2026 Cadillac CT5.

This group includes GM GENUINE 88984506 and GM GENUINE 84517840.

This table covers the seals at the Transfer Case 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

This group shows a single part: GM GENUINE 84517832.

This table covers the vents on the transfer case. Read more

One part is listed for the 2026 Cadillac CT5 — GM GENUINE 19180066.