2021 Chevrolet Suburban Drivetrain Parts

This table covers the actuators that engage four-wheel drive at the transfer case or axle. 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

4 4WD Actuator parts are listed for the 2021 Chevrolet Suburban, from AAM, GM GENUINE and WELLS. All of them fit every engine offered in the 2021 Suburban.

Listed part numbers: AAM 40244942, AAM 40270497 and GM GENUINE 85073905, plus the other parts above.

This table covers the 4WD Actuator Clutch shafts. Read more

This group shows a single part: GM GENUINE 85520528.

This table covers the 4WD Actuator Clutch sleeves. Read more

This group shows a single part: GM GENUINE 85120721.

This table covers the 4WD Actuator housings. Read more

This group shows a single part: GM GENUINE 84242534.

This table covers the Axle / Differential assemblies. Read more

GM GENUINE supplies the 4 Axle / Differential Assembly parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

This group includes GM GENUINE 85707712, GM GENUINE 85524484 and GM GENUINE 85524485 and the remaining parts above.

This table covers the Axle housings. Read more

2 Axle Housing parts for the 2021 Chevrolet Suburban come from 2 brands — ACDELCO and GM GENUINE.

This group includes ACDELCO 84766420 and GM GENUINE 85070827.

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

GM GENUINE supplies both parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

Listed part numbers: GM GENUINE 23371177 and GM GENUINE 84983738.

This table covers the Axle shafts. Read more

9 Axle Shaft parts are listed for the 2021 Chevrolet Suburban, from GM GENUINE and AAM. GM GENUINE 87821660 carries the "Popular" badge. All of them fit every engine offered in the 2021 Suburban.

This group includes GM GENUINE 87821660, AAM 40185479 and AAM 40199503 and the remaining parts above.

This table covers the Axle 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 Chevrolet Suburban — GM GENUINE 84428298.

This table covers the Axle Shaft Lock / Snap rings. Read more

GM GENUINE supplies the 3 Axle Shaft Lock / Snap Ring parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

This group includes GM GENUINE 11603361, GM GENUINE 84428312 and GM GENUINE 84428317.

This table covers the Axle Shaft Pilot 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 Chevrolet Suburban — GM GENUINE FD102.

This table covers the Axle Shaft retainers and clips. Read more

This group shows a single part: DORMAN 13851.

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

4 Axle Shaft Seal parts for the 2021 Chevrolet Suburban come from 2 brands — GM GENUINE and TIMKEN. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Listed part numbers: GM GENUINE 84649193, GM GENUINE 84428310 and GM GENUINE 84649194, plus the other parts above.

This table covers the Axle Vent 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 26063647.

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

10 CV Axle parts for the 2021 Chevrolet Suburban come from 4 brands — TRAKMOTIVE, TOP NOTCH, GSP and 1 other brand. The "Popular" part is TOP NOTCH TN20181XDP. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

In the Specialty - For Lifted Vehicles grade, TOP NOTCH, GSP and TRAKMOTIVE supply 3 parts: grouped under the catalog's "Specialty - For Lifted Vehicles" designation — the notes column spells out what sets them apart. A representative part number is TOP NOTCH TN20181XDP.

In the Standard Replacement grade, TRAKMOTIVE, GM GENUINE, TOP NOTCH and 1 other brand supply 7 parts: built to original-equipment specification. A representative part number is TOP NOTCH TN20092.

This table covers the constant-velocity joints at each end of a drive axle. Read more

This group shows a single part: GM GENUINE 87842369.

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

5 CV Joint Boot parts for the 2021 Chevrolet Suburban come from GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Part numbers include GM GENUINE 27172764, GM GENUINE 84392106 and GM GENUINE 84849629, among others listed above.

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

GM GENUINE supplies the 5 CV Joint Boot Band parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

This group includes GM GENUINE 11603287, GM GENUINE 11603288 and GM GENUINE 84167063 and the remaining parts above.

This table covers the CV Joint Lock rings. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

Part numbers include GM GENUINE 23369006 and GM GENUINE 84983780.

This table covers the Differential Bearing retainers. Read more

This group shows a single part: GM GENUINE 84881472.

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

2 Differential Carrier parts for the 2021 Chevrolet Suburban come from 2 brands — AAM and GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

This group includes AAM 40270764 and GM GENUINE 85644584.

This table covers the bearings and races that support the differential carrier. Read more

4 Differential Carrier Bearing / Race parts for the 2021 Chevrolet Suburban come from 2 brands — AAM and GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

This group includes AAM 74067035, AAM 74067036 and GM GENUINE 85722139 and the remaining parts above.

This table covers the Differential Carrier bolts. Read more

GM GENUINE supplies the 4 Differential Carrier Bolt parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

Listed part numbers: GM GENUINE 11561300, GM GENUINE 11602523 and GM GENUINE 11548870, plus the other parts above.

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

5 Differential Carrier Bushing parts for the 2021 Chevrolet Suburban come from GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Listed part numbers: GM GENUINE 23243748, GM GENUINE 23280848 and GM GENUINE 84214009, plus the other parts above.

This table covers the Differential Carrier shims. Read more

GM GENUINE supplies the 6 Differential Carrier Shim parts for the 2021 Chevrolet Suburban. GM GENUINE 22835276 carries the "Popular" badge. All of them fit every engine offered in the 2021 Suburban.

This group includes GM GENUINE 22835276, GM GENUINE 22835268 and GM GENUINE 84428332 and the remaining parts above.

This table covers the Differential control modules. Read more

GM GENUINE supplies the 3 Differential Control Module parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

Listed part numbers: GM GENUINE 86586531, GM GENUINE 84946602 and GM GENUINE 85103067.

This table covers the Differential covers. Read more

One part is listed for the 2021 Chevrolet Suburban — AAM 40182934.

This table covers the Differential Cover bolts. Read more

6 Differential Cover Bolt parts for the 2021 Chevrolet Suburban come from GM GENUINE. The "Popular" part is GM GENUINE 11602538. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Listed part numbers: GM GENUINE 11602538, GM GENUINE 11546347 and GM GENUINE 11603344, plus the other parts above.

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

4 Differential Cover Gasket parts for the 2021 Chevrolet Suburban come from 3 brands — GM GENUINE, AAM and DORMAN. 2 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: AAM 40270026, DORMAN 926110 and GM GENUINE 84428297, plus the other parts above.

This table covers the Differential Fill drain plugs. Read more

2 Differential Fill / Drain Plug parts for the 2021 Chevrolet Suburban come from GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Part numbers include GM GENUINE 55573646 and GM GENUINE 84479772.

This table covers the Differential Lock 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 85014370.

This table covers the thrust blocks in a locking differential. Read more

2 Differential Lock Thrust Block parts for the 2021 Chevrolet Suburban come from GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Listed part numbers: GM GENUINE 88983789 and GM GENUINE 88983796.

This table covers the bearings and races on the differential pinion. Read more

GM GENUINE supplies the 6 Differential Pinion Bearing / Race parts for the 2021 Chevrolet Suburban. GM GENUINE S1395 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.

Part numbers include GM GENUINE S1395, GM GENUINE 85722137 and GM GENUINE 84881466, among others listed above.

This table covers the baffles that control oil at the pinion bearings. Read more

GM GENUINE supplies the 6 Differential Pinion Bearing Baffle parts for the 2021 Chevrolet Suburban. GM GENUINE 22943114 carries the "Popular" badge. All of them fit every engine offered in the 2021 Suburban.

This group includes GM GENUINE 22943114, GM GENUINE 12479162 and GM GENUINE 84766409 and the remaining parts above.

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

2 Differential Pinion Flange parts for the 2021 Chevrolet Suburban come from 2 brands — AAM and GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Listed part numbers: AAM 40221063 and GM GENUINE 84922909.

This table covers the Differential Pinion nuts. Read more

3 Differential Pinion Nut parts for the 2021 Chevrolet Suburban come from GM GENUINE. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include GM GENUINE 09783762, GM GENUINE 88891763 and GM GENUINE 84697856.

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

8 Differential Pinion Seal parts for the 2021 Chevrolet Suburban come from 4 brands — GM GENUINE, TIMKEN, USA STANDARD GEAR and 1 other brand. The "Popular" part is GM GENUINE 84428304. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Part numbers include GM GENUINE 84428304, USA STANDARD GEAR USA30355 and AAM 40262033, among others listed above.

This table covers the Differential Pinion Shaft Lock bolts. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 11546644.

This table covers the Differential Pinion shims. Read more

7 Differential Pinion Shim parts for the 2021 Chevrolet Suburban come from GM GENUINE. The "Popular" part is GM GENUINE 26043991. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Part numbers include GM GENUINE 26043991, GM GENUINE 23114042 and GM GENUINE 23114043, among others listed above.

This table covers the ring-and-pinion gear sets that set the axle ratio. Read more

6 Differential Ring and Pinion parts for the 2021 Chevrolet Suburban come from 2 brands — AAM and GM GENUINE. The "Popular" part is AAM 80T1373GK. 5 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: AAM 80T1373GK, AAM 80T1323GK and AAM 80T1342GK, plus the other parts above.

This table covers the Differential Ring Gear bolts. Read more

2 Differential Ring Gear Bolt parts for the 2021 Chevrolet Suburban come from GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Listed part numbers: GM GENUINE 11546991 and GM GENUINE 84881474.

This table covers the Differential Side Bearing spacers. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 84428331.

This table covers the Differential Spider gears. Read more

This group shows a single part: GM GENUINE 84881475.

This table covers the Differential washers. Read more

This group shows a single part: GM GENUINE 14039026.

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

8 Drive Shaft parts are listed for the 2021 Chevrolet Suburban, from DORMAN, WJB / INMOTION PARTS and GM GENUINE. DORMAN 938384 carries the "Popular" badge. All of them fit every engine offered in the 2021 Suburban.

Listed part numbers: DORMAN 938384, DORMAN 986458 and DORMAN 986456, plus the other parts above.

This table covers the Drive Shaft bolts. Read more

This group shows a single part: GM GENUINE 11602575.

This table covers the Drive Shaft End yokes. Read more

2 Drive Shaft End Yoke parts for the 2021 Chevrolet Suburban come from GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Part numbers include GM GENUINE 84881462 and GM GENUINE 85524483.

This table covers the Drive Shaft retainers. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 11603594.

This table covers the Drive Shaft Slip yokes. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Suburban. All of them fit every engine offered in the 2021 Suburban.

Part numbers include GM GENUINE 84389645 and GM GENUINE 84389646.

This table covers the seals at the Drive Shaft Slip 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 24233898.

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 2021 Chevrolet Suburban come from 2 brands — VALVOLINE and ACDELCO. The "Popular" part is ACDELCO 104091. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

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 104091 is listed in this group.

The SAE 75W-90 section lists 4 options from VALVOLINE — 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.

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

Part numbers include ACDELCO 104091, VALVOLINE VV975 and VALVOLINE 889785, among others listed above.

This table covers the Transfer Case bolts. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 19169068.

This table covers the Transfer Case Clutch Pressure 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

2 Transfer Case Clutch Pressure Plate parts for the 2021 Chevrolet Suburban come from GM GENUINE. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

Listed part numbers: GM GENUINE 19133077 and GM GENUINE 84184296.

This table covers the Transfer Case Clutch Pressure Plate Return springs. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 19133074.

This table covers the chains that drive the transfer case. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 19133129.

This table covers the Transfer Case Driven Sprocket Retaining rings. Read more

This group shows a single part: GM GENUINE 19133113.

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

12 Transfer Case Fluid parts for the 2021 Chevrolet Suburban come from 4 brands — VALVOLINE, ACDELCO, MOBIL and 1 other brand. The "Popular" part is ACDELCO 109394. Every part fits all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8).

The Dexron section lists 5 options from ACDELCO, VALVOLINE and MOBIL — grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. ACDELCO 109394 is listed in this group.

The Multi-Vehicle section lists 6 options from VALVOLINE, LUCAS OIL and MOBIL — grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. VALVOLINE VV3246 is listed in this group.

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

This table covers the gaskets that seal the Transfer Case. 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 Transfer Case Gasket parts are listed for the 2021 Chevrolet Suburban, from FEL-PRO, DORMAN, GM GENUINE and 2 other brands. FEL-PRO 72770 carries the "Popular" badge. All of them fit every engine offered in the 2021 Suburban.

Part numbers include FEL-PRO 72770, DORMAN 917562 and GM GENUINE 86816628, among others listed above.

This table covers the Transfer Case High / Low clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

This group shows a single part: GM GENUINE 19299093.