2026 Chevrolet Express 2500 Drivetrain Parts

This table covers the Axle / Differential assemblies. Read more

GM GENUINE supplies the 3 Axle / Differential Assembly parts for the 2026 Chevrolet Express 2500.

Part numbers include GM GENUINE 84447463, GM GENUINE 86395612 and GM GENUINE 84447465.

This table covers the Axle bumpers. Read more

This group shows a single part: GM GENUINE 06263975.

This table covers the Axle shafts. Read more

One part is listed for the 2026 Chevrolet Express 2500 — GM GENUINE 86547051.

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 2026 Chevrolet Express 2500 — GM GENUINE S606.

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

This group shows a single part: GM GENUINE 14012746.

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

This group shows a single part: GM GENUINE 291316.

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 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

2 CV Joint Boot parts for the 2026 Chevrolet Express 2500 come from GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

This group includes GM GENUINE 15898093 and GM GENUINE 85108039.

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

3 Differential Carrier parts for the 2026 Chevrolet Express 2500 come from 2 brands — GM GENUINE and USA STANDARD GEAR. Every part fits both the 4.3L V6 and the 6.6L V8.

In the Heavy Duty grade, USA STANDARD GEAR supplies 1 part: rated for severe service. A representative part number is USA STANDARD GEAR USA26049.

In the Standard Replacement grade, GM GENUINE supplies 2 parts: built to original-equipment specification. A representative part number is GM GENUINE 22943116.

Part numbers include USA STANDARD GEAR USA26049, GM GENUINE 22943116 and GM GENUINE 22943118.

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

This group shows a single part: GM GENUINE 84678054.

This table covers the Differential Carrier shims. Read more

GM GENUINE supplies both parts for the 2026 Chevrolet Express 2500. All of them fit every engine offered in the 2026 Express 2500.

Part numbers include GM GENUINE 15599629 and GM GENUINE 15599633.

This table covers the clutch packs in a limited-slip or locking differential. Read more

2 Differential Clutch Pack parts for the 2026 Chevrolet Express 2500 come from GM GENUINE.

Part numbers include GM GENUINE 23404635 and GM GENUINE 84446266.

This table covers the Differential Clutch Pack clips. Read more

2 Differential Clutch Pack Clip parts for the 2026 Chevrolet Express 2500 come from GM GENUINE. Every part fits both the 4.3L V6 and the 6.6L V8.

Listed part numbers: GM GENUINE 15599623 and GM GENUINE 12471533.

This table covers the Differential covers. Read more

3 Differential Cover parts are listed for the 2026 Chevrolet Express 2500, from AAM, GM GENUINE and USA STANDARD GEAR. All of them fit every engine offered in the 2026 Express 2500.

Listed part numbers: AAM 40060164, GM GENUINE 22951487 and USA STANDARD GEAR USA32365.

This table covers the Differential Cover bolts. Read more

This group shows a single part: GM GENUINE 12471307.

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

This group shows a single part: GM GENUINE 85720902.

This table covers the Differential Cross pins. Read more

GM GENUINE supplies both parts for the 2026 Chevrolet Express 2500. All of them fit every engine offered in the 2026 Express 2500.

Part numbers include GM GENUINE 22950866 and GM GENUINE 20768565.

This table covers the Differential Fill drain plugs. Read more

This group shows a single part: GM GENUINE 24045309.

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

This group shows a single part: GM GENUINE 12471530.

This table covers the Differential Lock 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

One part is listed for the 2026 Chevrolet Express 2500 — GM GENUINE 23125826.

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

5 Differential Lock Thrust Block parts for the 2026 Chevrolet Express 2500 come from GM GENUINE. Every part fits both the 4.3L V6 and the 6.6L V8.

Listed part numbers: GM GENUINE 88983789, GM GENUINE 88983791 and GM GENUINE 88983792, plus the other parts above.

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

GM GENUINE supplies both parts for the 2026 Chevrolet Express 2500. All of them fit every engine offered in the 2026 Express 2500.

Listed part numbers: GM GENUINE 84937117 and GM GENUINE 85580239.

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

One part is listed for the 2026 Chevrolet Express 2500 — GM GENUINE 22943114.

This table covers the Differential Pinion nuts. Read more

This group shows a single part: GM GENUINE 09783762.

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

2 Differential Pinion Seal parts for the 2026 Chevrolet Express 2500 come from GM GENUINE. Every part fits both the 4.3L V6 and the 6.6L V8.

Listed part numbers: GM GENUINE 86285709 and GM GENUINE 84924145.

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

One part is listed for the 2026 Chevrolet Express 2500 — GM GENUINE 11546644.

This table covers kits that group the bearings, races and seals for a differential rebuild. Read more

One part is listed for the 2026 Chevrolet Express 2500 — USA STANDARD GEAR USA14217.

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

This group shows a single part: GM GENUINE 85532486.

This table covers the Differential Ring Gear bolts. Read more

This group shows a single part: GM GENUINE 11546991.

This table covers the Differential Spider gears. Read more

4 Differential Spider Gear parts for the 2026 Chevrolet Express 2500 come from GM GENUINE. 1 part fits every engine; the other 3 are engine-specific.

Listed part numbers: GM GENUINE 85703141, GM GENUINE 84446314 and GM GENUINE 85106133, plus the other parts above.

This table covers the Differential washers. Read more

3 Differential Washer parts for the 2026 Chevrolet Express 2500 come from GM GENUINE. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include GM GENUINE 14039026, GM GENUINE 00462786 and GM GENUINE 84446285.

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

GM GENUINE supplies the 3 Drive Shaft parts for the 2026 Chevrolet Express 2500. 1 part fits every engine; the other 2 are engine-specific.

This group includes GM GENUINE 84786717, GM GENUINE 84862873 and GM GENUINE 84862876.

This table covers the Drive Shaft bolts. Read more

This group shows a single part: GM GENUINE 11548472.

This table covers the Drive Shaft Center Support 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 2026 Chevrolet Express 2500 — GM GENUINE 84448547.

This table covers the Drive Shaft retainers. Read more

GM GENUINE supplies both parts for the 2026 Chevrolet Express 2500. All of them fit every engine offered in the 2026 Express 2500.

Part numbers include GM GENUINE 23107857 and GM GENUINE 23170499.

This table covers the Drive Shaft Slip yokes. Read more

GM GENUINE supplies both parts for the 2026 Chevrolet Express 2500. All of them fit every engine offered in the 2026 Express 2500.

Part numbers include GM GENUINE 19256892 and GM GENUINE 85108037.

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 for the 2026 Chevrolet Express 2500 come from 2 brands — VALVOLINE and ACDELCO. The "Popular" part is VALVOLINE VV820. Every part fits both the 4.3L V6 and the 6.6L 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 6 options from VALVOLINE — grouped under the catalog's "SAE 75W-90" designation — the notes column spells out what sets them apart. VALVOLINE VV820 is listed in this group.

This group includes VALVOLINE VV820, ACDELCO 104091 and VALVOLINE VV975 and the remaining parts above.

This table covers the U-joints in the driveshaft. Read more

This group shows a single part: GM GENUINE 88964413.