2018 Cadillac CTS Drivetrain Parts

This table covers the AWD Coupling Oil filters. 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

One part is listed for the 2018 Cadillac CTS — GM GENUINE 23154580.

This table covers the Axle / Differential assemblies. Read more

2 Axle / Differential Assembly parts for the 2018 Cadillac CTS come from GM GENUINE.

Part numbers include GM GENUINE 85571694 and GM GENUINE 84944441.

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

This group shows a single part: GM GENUINE 22772318.

This table covers the Axle shafts. Read more

3 Axle Shaft parts for the 2018 Cadillac CTS come from GM GENUINE.

This group includes GM GENUINE 85571700, GM GENUINE 23297260 and GM GENUINE 23297261.

This table covers the Axle Shaft Housing tubes. Read more

2 Axle Shaft Housing / Tube parts for the 2018 Cadillac CTS come from GM GENUINE.

Part numbers include GM GENUINE 84098259 and GM GENUINE 84098258.

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

8 Axle Shaft Seal parts are listed for the 2018 Cadillac CTS, from GM GENUINE, TIMKEN and WJB / INMOTION PARTS. GM GENUINE 291334 carries the "Popular" badge.

Listed part numbers: GM GENUINE 291334, GM GENUINE 291342 and GM GENUINE 23276834, plus the other parts above.

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

18 CV Axle parts are listed for the 2018 Cadillac CTS, from TRAKMOTIVE, GM GENUINE, GSP and 1 other brand. GM GENUINE 84550220 carries the "Popular" badge. 2 parts fit every engine; the other 16 are engine-specific.

This table covers the CV Intermediate shafts. Read more

This group shows a single part: GM GENUINE 22772313.

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

GM GENUINE supplies both parts for the 2018 Cadillac CTS.

Part numbers include GM GENUINE 84138224 and GM GENUINE 84138229.

This table covers the bands that clamp a CV boot to the joint. Read more

4 CV Joint Boot Band parts for the 2018 Cadillac CTS come from GM GENUINE.

This group includes GM GENUINE 11611715, GM GENUINE 364038 and GM GENUINE 84207707 and the remaining parts above.

This table covers the CV Joint Lock rings. Read more

This group shows a single part: GM GENUINE 11611639.

This table covers the carriers that hold the differential gears in the axle. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 87821839.

This table covers the Differential Carrier bolts. Read more

3 Differential Carrier Bolt parts for the 2018 Cadillac CTS come from GM GENUINE. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include GM GENUINE 11611275, GM GENUINE 11609607 and GM GENUINE 11589283.

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

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

Listed part numbers: GM GENUINE 20762354 and GM GENUINE 20762248.

This table covers the Differential Clutch Pressure 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

This group shows a single part: GM GENUINE 23154576.

This table covers the Differential control modules. Read more

This group shows a single part: GM GENUINE 86788448.

This table covers the Differential covers. Read more

This group shows a single part: GM GENUINE 23221119.

This table covers the Differential Cover bolts. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 26036835.

This table covers the gaskets that seal the Differential Cover. 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

6 Differential Cover Gasket parts are listed for the 2018 Cadillac CTS, from GM GENUINE, ELRING and FEL-PRO. FEL-PRO RDS55489 carries the "Popular" badge. 1 part fits every engine; the other 5 are engine-specific.

Part numbers include FEL-PRO RDS55489, ELRING B18210 and ELRING B18180, among others listed above.

This table covers the Differential Fill drain plugs. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 55573646.

This table covers the Differential Lock actuators. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 86788449.

This table covers the brackets that mount the Differential Mount. 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 22851780.

This table covers the Differential Oil Pump 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

This group shows a single part: GM GENUINE 23157289.

This table covers the Differential Oil 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

One part is listed for the 2018 Cadillac CTS — GM GENUINE 23154586.

This table covers the flanges that connect the driveshaft to the differential pinion. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 22772321.

This table covers the Differential Pinion nuts. Read more

GM GENUINE supplies the 3 Differential Pinion Nut parts for the 2018 Cadillac CTS.

Part numbers include GM GENUINE 11611637, GM GENUINE 84668151 and GM GENUINE 84489150.

This table covers the wear sleeves used to restore a grooved pinion seal surface. Read more

One part is listed for the 2018 Cadillac CTS — WJB / INMOTION PARTS WS99193.

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

10 Differential Pinion Seal parts are listed for the 2018 Cadillac CTS, from GM GENUINE, TIMKEN, WJB / INMOTION PARTS and 3 other brands. NATIONAL 710536 carries the "Popular" badge.

This table covers the seals at the Differential. 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 B18190.

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

14 Drive Shaft parts for the 2018 Cadillac CTS come from 5 brands — DORMAN, GSP, TOP NOTCH and 2 other brands. The "Popular" part is DORMAN 986348.

This table covers the Drive Shaft bolts. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 11546698.

This table covers the Drive Shaft Flange yokes. Read more

GM GENUINE supplies the 3 Drive Shaft Flange Yoke parts for the 2018 Cadillac CTS.

This group includes GM GENUINE 22772323, GM GENUINE 24272758 and GM GENUINE 24273505.

This table covers the Drive Shaft retainers. Read more

This group shows a single part: GM GENUINE 20813566.

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

One part is listed for the 2018 Cadillac CTS — ELRING B18370.

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

7 Gear Oil parts are listed for the 2018 Cadillac CTS, from VALVOLINE, MOBIL and ACDELCO. MOBIL 126505 carries the "Popular" badge.

In the Dexron grade, MOBIL supplies 1 part: grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. A representative part number is MOBIL 126411.

In the Multi-Vehicle grade, MOBIL supplies 1 part: grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. A representative part number is MOBIL 126505.

In the SAE 75W-90 grade, VALVOLINE and ACDELCO supply 5 parts: grouped under the catalog's "SAE 75W-90" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE VV975.

Part numbers include MOBIL 126505, MOBIL 126411 and VALVOLINE VV975, among others listed above.

This table covers the Transfer Case flanges. Read more

This group shows a single part: GM GENUINE 24267004.

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

One part is listed for the 2018 Cadillac CTS — ACDELCO 104044.

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

One part is listed for the 2018 Cadillac CTS — GM GENUINE 19179158.

This table covers the Transfer Case Input shafts. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 24266971.

This table covers the seals at the Transfer Case Input 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: WJB / INMOTION PARTS WS710725.

This table covers the Transfer Case motors. 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

This group shows a single part: GM GENUINE 19208080.

This table covers the Transfer Case Output shafts. Read more

This group shows a single part: GM GENUINE 24266988.

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

6 Transfer Case Output Shaft Bearing parts for the 2018 Cadillac CTS come from 4 brands — WJB / INMOTION PARTS, BCA, NATIONAL and 1 other brand. The "Popular" part is NATIONAL 109.

The Economy section lists 2 options from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS RB6009 is listed in this group.

In the Standard Replacement grade, NATIONAL, BCA and GM GENUINE supply 3 parts: built to original-equipment specification. A representative part number is NATIONAL 109.

1 further part sits outside the graded sections, with the same engine-level match.

Part numbers include NATIONAL 109, WJB / INMOTION PARTS RB6009 and WJB / INMOTION PARTS RB6209N, among others listed above.

This table covers the Transfer Case Output Shaft nuts. Read more

One part is listed for the 2018 Cadillac CTS — GM GENUINE 89059523.

This table covers the wear sleeves used to restore a Transfer Case Output Shaft seal surface. Read more

2 Transfer Case Output Shaft Repair Sleeve parts are listed for the 2018 Cadillac CTS, from NATIONAL and WJB / INMOTION PARTS.

Part numbers include NATIONAL 99204 and WJB / INMOTION PARTS WS99204.

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

2 Transfer Case Output Shaft Seal parts are listed for the 2018 Cadillac CTS, from TIMKEN and WJB / INMOTION PARTS.

This group includes TIMKEN SL260365 and WJB / INMOTION PARTS WS710953.

This table covers the Transfer Case Output Shaft washers. Read more

This group shows a single part: GM GENUINE 15580315.

This table covers the seals at the Transfer Case Shift 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 Transfer Case Shift Shaft Seal parts for the 2018 Cadillac CTS come from 2 brands — NATIONAL and WJB / INMOTION PARTS.

This group includes NATIONAL 330385 and WJB / INMOTION PARTS WS330385.

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

This group shows a single part: GM GENUINE 19180066.