This page lists 124 drivetrain parts for the 2021 GMC Savana 2500, across 41 part types, covering all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8). Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 GMC Savana 2500, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Most of the listed parts are Universal Joint (11 parts), Differential Rebuild Kit (10 parts) and Axle Shaft (7 parts). The other 38 part types cover the remaining 96 parts.
The 2021 GMC Savana 2500 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 GMC Savana 2500 drivetrain parts are GM GENUINE (57 parts), AAM (16 parts) and DORMAN (6 parts), plus 22 more brands. Quality grades include Standard Replacement, Economy and Heavy Duty.
14 parts on this 2021 GMC Savana 2500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including AAM 40054774 (Axle Shaft) and GM GENUINE 11546347 (Differential Cover Bolt). Click any part number to see every vehicle that part fits.
Axle / Differential Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 84447463 | 🇺🇸 US 🇨🇦 CA | Gear Ratio: 3-42Mounting Hardware Included: No | View on Amazon |
This table covers the Axle / Differential assemblies.
One part is listed for the 2021 GMC Savana 2500 — GM GENUINE 84447463.
Axle Bumper
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 06263975 | 🇺🇸 US 🇨🇦 CA | Rearwith RPO Code 3975 | View on Amazon |
This table covers the Axle bumpers.
This group shows a single part: GM GENUINE 06263975.
Axle Shaft
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.6L V8 | 630325 | 🇺🇸 US 🇨🇦 CA | Fits Rear Left9.5" Ring Gear | View on Amazon |
| RICHMOND Fits: 6.6L V8 | 9225174 | 🇺🇸 US 🇨🇦 CA | Excel34.02" Overall Length | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Popular Fits: 6.6L V8 | 40054774 | 🇺🇸 US 🇨🇦 CA | Rearwith 8 Lug Wheels | View on Amazon |
| AAM Popular Fits: 6.6L V8 | 40103094 | 🇺🇸 US 🇨🇦 CA | without Wheel Studswith 12 Bolt Cover | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 86547051 | 🇺🇸 US 🇨🇦 CA | Fits RearExc. Positraction Limited-Slip Rear Axle (G80) | View on Amazon |
| USA STANDARD GEAR Fits: 6.6L V8 | USA21586 | 🇺🇸 US 🇨🇦 CA | 33 Spline34.02" Length | View on Amazon |
| USA STANDARD GEAR Fits: 6.6L V8 | ZAK630325 | 🇺🇸 US 🇨🇦 CA | Axle Shaft KitIncludes Wheel Bearing, Seal, Studs, Lug Nuts | View on Amazon |
This table covers the Axle shafts.
7 Axle Shaft parts are listed for the 2021 GMC Savana 2500, from AAM, USA STANDARD GEAR, DORMAN and 2 other brands. AAM 40054774 carries the "Popular" badge.
In the Economy grade, DORMAN and RICHMOND supply 2 parts: the catalog's value-priced group. A representative part number is DORMAN 630325.
The Standard Replacement section lists 5 options from AAM, USA STANDARD GEAR and GM GENUINE — built to original-equipment specification. AAM 40054774 is listed in this group.
Part numbers include AAM 40054774, DORMAN 630325 and RICHMOND 9225174, among others listed above.
Axle Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | S606 | 🇺🇸 US 🇨🇦 CA | Rear3.42 Rear Axle Ratio (GU6),9.50 Ring Gear Saginaw - American Axle | View on Amazon |
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.
One part is listed for the 2021 GMC Savana 2500 — GM GENUINE S606.
Axle Shaft Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.6L V8 | 13851 | 🇺🇸 US 🇨🇦 CA | Rear9.5" Ring Gear or 9.75" Ring Gear | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 14012746 | 🇺🇸 US 🇨🇦 CA | Rear Axle43.0 X 22.5mm | View on Amazon |
This table covers the Axle Shaft retainers and clips.
2 Axle Shaft Retainer / Clip parts for the 2021 GMC Savana 2500 come from 2 brands — DORMAN and GM GENUINE.
This group includes DORMAN 13851 and GM GENUINE 14012746.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 291316 | 🇺🇸 US 🇨🇦 CA | Rear3.42 Rear Axle Ratio (GU6) | View on Amazon |
| TIMKEN Fits: 6.6L V8 | 710105 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
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.
2 Axle Shaft Seal parts for the 2021 GMC Savana 2500 come from 2 brands — GM GENUINE and TIMKEN.
Part numbers include GM GENUINE 291316 and TIMKEN 710105.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 40215887 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE Fits: 6.6L V8 | 23126611 | 🇺🇸 US 🇨🇦 CA | Front8 speed Automatic trans | View on Amazon |
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.
2 CV Joint Boot parts for the 2021 GMC Savana 2500 come from 2 brands — AAM and GM GENUINE.
Part numbers include AAM 40215887 and GM GENUINE 23126611.
Differential Carrier
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| USA STANDARD GEAR Fits: 6.6L V8 | USA26049 | 🇺🇸 US 🇨🇦 CA | Yukon Dura Grip | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 14012695 | 🇺🇸 US 🇨🇦 CA | Carrier Unit without gears | View on Amazon |
| AAM Fits: 6.6L V8 | 40035046 | 🇺🇸 US 🇨🇦 CA | with 14 Bolt Coverwith 9.5 (In) Rear Axle | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 22943116 | 🇺🇸 US 🇨🇦 CA | FOR 3.42 /3.73 /4.10 AXLESExc. Positraction Limited-Slip Rear Axle (G80) | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 22943118 | 🇺🇸 US 🇨🇦 CA | Exc. Positraction Limited-Slip Rear Axle (G80)3.42 Rear Axle Ratio (GU6) | View on Amazon |
This table covers the carriers that hold the differential gears in the axle.
5 Differential Carrier parts for the 2021 GMC Savana 2500 come from 3 brands — AAM, GM GENUINE and USA STANDARD GEAR.
In the Heavy Duty grade, USA STANDARD GEAR supplies 1 part: rated for severe service. A representative part number is USA STANDARD GEAR USA26049.
Standard Replacement: 4 parts, from AAM and GM GENUINE. A representative part number is AAM 14012695.
Part numbers include USA STANDARD GEAR USA26049, AAM 14012695 and AAM 40035046, among others listed above.
Differential Carrier Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 84678054 | 🇺🇸 US 🇨🇦 CA | 3.42 Rear Axle Ratio (GU6),9.50 Ring Gear Saginaw - American Axle | View on Amazon |
This table covers the bearings and races that support the differential carrier.
This group shows a single part: GM GENUINE 84678054.
Differential Carrier Shim
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 15599629 | 🇺🇸 US 🇨🇦 CA | .025mm Thick3.73 Rear Axle Ratio (GT4),4.10 Rear Axle Ratio (GT5),3.42 Rear Axle Ratio (GU6),Positraction Limited-Slip Rear Axle (G80),Active Brake Control (JL4),Single Rear Wheel (R04),Dual Rear Wheels(R05) | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 22835276 | 🇺🇸 US 🇨🇦 CA | 1.422-1.93 | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 15599633 | 🇺🇸 US 🇨🇦 CA | .045mm Thick3.42 Rear Axle Ratio (GU6),Positraction Limited-Slip Rear Axle (G80),3.73 Rear Axle Ratio (GT4),4.10 Rear Axle Ratio (GT5),Active Brake Control (JL4),Single Rear Wheel (R04),DUAL REAR WHEELS(R05) | View on Amazon |
This table covers the Differential Carrier shims.
GM GENUINE supplies the 3 Differential Carrier Shim parts for the 2021 GMC Savana 2500.
Listed part numbers: GM GENUINE 15599629, GM GENUINE 22835276 and GM GENUINE 15599633.
Differential Clutch Pack
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 23404635 | 🇺🇸 US 🇨🇦 CA | Right3.42 Rear Axle Ratio (GU6) | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 84446266 | 🇺🇸 US 🇨🇦 CA | LeftGM Part Number Etched On Differential Case | View on Amazon |
This table covers the clutch packs in a limited-slip or locking differential.
2 Differential Clutch Pack parts for the 2021 GMC Savana 2500 come from GM GENUINE.
This group includes GM GENUINE 23404635 and GM GENUINE 84446266.
Differential Clutch Pack Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 15599623 | 🇺🇸 US 🇨🇦 CA | Differential Guide Clip | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 12471533 | 🇺🇸 US 🇨🇦 CA | Width .51"3.42 Rear Axle Ratio (GU6),Positraction Limited-Slip Rear Axle (G80),9.50 Ring Gear Saginaw - American Axle | View on Amazon |
This table covers the Differential Clutch Pack clips.
2 Differential Clutch Pack Clip parts for the 2021 GMC Savana 2500 come from GM GENUINE.
Listed part numbers: GM GENUINE 15599623 and GM GENUINE 12471533.
Differential Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 22951487 | 🇺🇸 US 🇨🇦 CA | Rear3.42 Rear Axle Ratio (GU6) | View on Amazon |
This table covers the Differential covers.
One part is listed for the 2021 GMC Savana 2500 — GM GENUINE 22951487.
Differential Cover Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 6.6L V8 | 11546347 | 🇺🇸 US 🇨🇦 CA | RearM8X1.25X11.6,19.2 Thread | View on Amazon |
| AAM Fits: 6.6L V8 | 4000216910 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| AAM Fits: 6.6L V8 | 40002169 | 🇺🇸 US 🇨🇦 CA | with 9.5 (In) Rear Axle | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 12471307 | 🇺🇸 US 🇨🇦 CA | RearM8X1.25X22.6,19.2THD | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 11546348 | 🇺🇸 US 🇨🇦 CA | RearM8X1.25X26.6,23.2 Thread | View on Amazon |
This table covers the Differential Cover bolts.
5 Differential Cover Bolt parts for the 2021 GMC Savana 2500 come from 2 brands — GM GENUINE and AAM. The "Popular" part is GM GENUINE 11546347.
This group includes GM GENUINE 11546347, AAM 4000216910 and AAM 40002169 and the remaining parts above.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 6.6L V8 | 55498 | 🇺🇸 US 🇨🇦 CA | RearAxle Housing Cover | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 85720902 | 🇺🇸 US 🇨🇦 CA | Mounting Hole Quantity: 12 | View on Amazon |
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.
2 Differential Cover Gasket parts for the 2021 GMC Savana 2500 come from 2 brands — FEL-PRO and GM GENUINE.
Listed part numbers: FEL-PRO 55498 and GM GENUINE 85720902.
Differential Cross Pin
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 22950866 | 🇺🇸 US 🇨🇦 CA | 3.42 Rear Axle Ratio (GU6)Positraction Limited-Slip Rear Axle (G80) | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 20768565 | 🇺🇸 US 🇨🇦 CA | Exc. Positraction Limited-Slip Rear Axle (G80)3.42 Rear Axle Ratio (GU6) | View on Amazon |
This table covers the Differential Cross pins.
GM GENUINE supplies both parts for the 2021 GMC Savana 2500.
This group includes GM GENUINE 22950866 and GM GENUINE 20768565.
Differential Crush Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 14012691 | 🇺🇸 US 🇨🇦 CA | with 9.5 (In) Rear Axle | View on Amazon |
| AAM Fits: 6.6L V8 | 40099601 | 🇺🇸 US 🇨🇦 CA | with 9.5 (In) Rear Axlewith Option Code # SU7 | View on Amazon |
This table covers the Differential Crush sleeves.
AAM supplies both parts for the 2021 GMC Savana 2500.
Listed part numbers: AAM 14012691 and AAM 40099601.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 40007601 | 🇺🇸 US 🇨🇦 CA | with 9.5 (In) Rear Axle | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 55573646 | 🇺🇸 US 🇨🇦 CA | Includes O-Ring | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 24045309 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the Differential Fill drain plugs.
3 Differential Fill / Drain Plug parts for the 2021 GMC Savana 2500 come from 2 brands — GM GENUINE and AAM.
Part numbers include AAM 40007601, GM GENUINE 55573646 and GM GENUINE 24045309.
Differential Lock Actuator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 12471530 | 🇺🇸 US 🇨🇦 CA | Includes Bracket | View on Amazon |
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.
This group shows a single part: GM GENUINE 12471530.
Differential Lock Thrust Block
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 88983789 | 🇺🇸 US 🇨🇦 CA | Blue40.49 mm | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 88983791 | 🇺🇸 US 🇨🇦 CA | White40.69 mm | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 88983792 | 🇺🇸 US 🇨🇦 CA | Brown40.79 mm | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 88983793 | 🇺🇸 US 🇨🇦 CA | Yellow40.89 mm | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 88983794 | 🇺🇸 US 🇨🇦 CA | Orange41.00 mm | View on Amazon |
This table covers the thrust blocks in a locking differential.
5 Differential Lock Thrust Block parts for the 2021 GMC Savana 2500 come from GM GENUINE.
Listed part numbers: GM GENUINE 88983789, GM GENUINE 88983791 and GM GENUINE 88983792, plus the other parts above.
Differential Pinion Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | S1396 | 🇺🇸 US 🇨🇦 CA | Outer3.42 Rear Axle Ratio (GU6),9.50 Ring Gear Saginaw - American Axle | View on Amazon |
| NATIONAL Fits: 6.6L V8 | A72 | 🇺🇸 US 🇨🇦 CA | Taper Bearing Set Includes Cup and Cone | View on Amazon |
This table covers the bearings and races on the differential pinion.
2 Differential Pinion Bearing / Race parts are listed for the 2021 GMC Savana 2500, from GM GENUINE and NATIONAL.
Listed part numbers: GM GENUINE S1396 and NATIONAL A72.
Differential Pinion Bearing Baffle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 22943114 | 🇺🇸 US 🇨🇦 CA | 37MM Inner Diameter and 16mm Thick3.42 Rear Axle Ratio (GU6) | View on Amazon |
This table covers the baffles that control oil at the pinion bearings.
One part is listed for the 2021 GMC Savana 2500 — GM GENUINE 22943114.
Differential Pinion Nut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 09783762 | 🇺🇸 US 🇨🇦 CA | Fits 7/8-14 X 11/16Pinion Gear Nutor For Vehicles On And after 1GCWGAFP7M1144922 | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 84489150 | 🇺🇸 US 🇨🇦 CA | Fits For Vehicles Prior To 1GCWGAFP7M11449223.42 Rear Axle Ratio (GU6),Positraction Limited-Slip Rear Axle (G80),9.50 Ring Gear Saginaw - American Axle | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 88891763 | 🇺🇸 US 🇨🇦 CA | M10Pinion Gear Nut | View on Amazon |
This table covers the Differential Pinion nuts.
3 Differential Pinion Nut parts for the 2021 GMC Savana 2500 come from GM GENUINE.
This group includes GM GENUINE 09783762, GM GENUINE 84489150 and GM GENUINE 88891763.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 26060975 | 🇺🇸 US 🇨🇦 CA | Sleeve To adapt standard yoke To Use late model triple Lip pinion sealwith 14 Bolt Cover | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
This group shows a single part: AAM 26060975.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 6.6L V8 | 711033 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 9.5 IN Ring Gear | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 86285709 | 🇺🇸 US 🇨🇦 CA | Fits Single Rear Wheel (R04)Order with 9783762 | View on Amazon |
| SKF Fits: 6.6L V8 | 21395A | 🇺🇸 US 🇨🇦 CA | Rearwith 9.75 Ring Gear | View on Amazon |
| USA STANDARD GEAR Fits: 6.6L V8 | USA30355 | 🇺🇸 US 🇨🇦 CA | Yukon Mighty Seal | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.6L V8 | WS711033 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith AAM Axle | View on Amazon |
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.
5 Differential Pinion Seal parts for the 2021 GMC Savana 2500 come from 5 brands — NATIONAL, GM GENUINE, SKF and 2 other brands. The "Popular" part is NATIONAL 711033.
Listed part numbers: NATIONAL 711033, GM GENUINE 86285709 and SKF 21395A, plus the other parts above.
Differential Pinion Shaft Lock Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 11546644 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Differential Pinion Shaft Lock bolts.
One part is listed for the 2021 GMC Savana 2500 — GM GENUINE 11546644.
Differential Rebuild Kit
Master Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular Fits: 6.6L V8 | R95GRLAMK | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, P | View on Amazon |
| MOTIVE GEAR Popular Fits: 6.6L V8 | R95GRLAMKT | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, P | View on Amazon |
| BCA Fits: 6.6L V8 | NBDRK324EMK | 🇺🇸 US 🇨🇦 CA | Master Kit | View on Amazon |
| LUK Fits: 6.6L V8 | GDK325BMK | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| USA STANDARD GEAR Fits: 6.6L V8 | USA14217 | 🇺🇸 US 🇨🇦 CA | Yukon Master KitTimken Bearings | View on Amazon |
Standard Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 74067009 | 🇺🇸 US 🇨🇦 CA | with 10.5 (In) Rear Axle | View on Amazon |
| BCA Fits: 6.6L V8 | NBDRK324E | 🇺🇸 US 🇨🇦 CA | Standard Kit | View on Amazon |
| LUK Fits: 6.6L V8 | GDK325B | 🇺🇸 US 🇨🇦 CA | Standard Kit | View on Amazon |
| MOTIVE GEAR Fits: 6.6L V8 | R95GRLA | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, P | View on Amazon |
| MOTIVE GEAR Fits: 6.6L V8 | R95GRLAT | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, P | View on Amazon |
This table covers kits that group the bearings, races and seals for a differential rebuild.
10 Differential Rebuild Kit parts are listed for the 2021 GMC Savana 2500, from MOTIVE GEAR, BCA, LUK and 2 other brands. MOTIVE GEAR R95GRLAMK carries the "Popular" badge.
In the Master Kit grade, MOTIVE GEAR, BCA, LUK and 1 other brand supply 5 parts: grouped under the catalog's "Master Kit" designation — the notes column spells out what sets them apart. A representative part number is MOTIVE GEAR R95GRLAMK.
The Standard Kit section lists 5 options from MOTIVE GEAR, AAM, BCA and 1 other brand — grouped under the catalog's "Standard Kit" designation — the notes column spells out what sets them apart. AAM 74067009 is listed in this group.
Differential Ring and Pinion
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular Fits: 6.6L V8 | GM95L | 🇺🇸 US 🇨🇦 CA | RearGM 9.5" (12 Bolt) | View on Amazon |
| AAM Fits: 6.6L V8 | 40173817 | 🇺🇸 US 🇨🇦 CA | with 3.42 Axle Ratiowith 14 Bolt Cover | View on Amazon |
| AAM Fits: 6.6L V8 | 40033637 | 🇺🇸 US 🇨🇦 CA | with 14 Bolt Coverwith 9.5 (In) Rear Axle | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 84489155 | 🇺🇸 US 🇨🇦 CA | Fits For Vehicles Prior To 1GCWGAFP7M11449223.42 Rear Axle Ratio (GU6),Positraction Limited-Slip Rear Axle (G80),9.50 Ring Gear Saginaw - American Axle | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 85532486 | 🇺🇸 US 🇨🇦 CA | Fits For Vehicles On Andafter 1GCWGAFP7M11449223.42 Rear Axle Ratio (GU6),Positraction Limited-Slip Rear Axle (G80),9.50 Ring Gear Saginaw - American Axle | View on Amazon |
This table covers the ring-and-pinion gear sets that set the axle ratio.
5 Differential Ring and Pinion parts for the 2021 GMC Savana 2500 come from 3 brands — AAM, GM GENUINE and MOTIVE GEAR. The "Popular" part is MOTIVE GEAR GM95L.
This group includes MOTIVE GEAR GM95L, AAM 40173817 and AAM 40033637 and the remaining parts above.
Differential Ring Gear Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 14012703 | 🇺🇸 US 🇨🇦 CA | Thread Diameter: 12 MM | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 11546991 | 🇺🇸 US 🇨🇦 CA | Fits M12X1.5X22,20 Thread23 OD,12.9 | View on Amazon |
This table covers the Differential Ring Gear bolts.
2 Differential Ring Gear Bolt parts for the 2021 GMC Savana 2500 come from 2 brands — AAM and GM GENUINE.
This group includes AAM 14012703 and GM GENUINE 11546991.
Differential Spider Gear
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 84446314 | 🇺🇸 US 🇨🇦 CA | Carrier Gear Kit | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 85106133 | 🇺🇸 US 🇨🇦 CA | Carrier Gear Kit | View on Amazon |
This table covers the Differential Spider gears.
2 Differential Spider Gear parts for the 2021 GMC Savana 2500 come from GM GENUINE.
This group includes GM GENUINE 84446314 and GM GENUINE 85106133.
Differential Washer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 14039026 | 🇺🇸 US 🇨🇦 CA | Fits Positraction Limited-Slip Rear Axle (G80)10.50 Ring Gear Saginaw - American Axle | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 84446285 | 🇺🇸 US 🇨🇦 CA | GM Part Number Etched On Differential Case3.42 Rear Axle Ratio (GU6),Positraction Limited-Slip Rear Axle (G80) | View on Amazon |
This table covers the Differential washers.
2 Differential Washer parts for the 2021 GMC Savana 2500 come from GM GENUINE.
This group includes GM GENUINE 14039026 and GM GENUINE 84446285.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 6.6L V8 | 84675730 | 🇺🇸 US 🇨🇦 CA | Rear6 Speed Transmission | View on Amazon |
| DORMAN Fits: 6.6L V8 | 966480 | 🇺🇸 US 🇨🇦 CA | Length: 80" | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 84675739 | 🇺🇸 US 🇨🇦 CA | Rear6 speed transmission | View on Amazon |
| GSP Fits: 6.6L V8 | PS901791 | 🇺🇸 US 🇨🇦 CA | Rear6 speed trans. | View on Amazon |
| TOP NOTCH Fits: 6.6L V8 | TN1086PS | 🇺🇸 US 🇨🇦 CA | Rear6 speed trans. | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
5 Drive Shaft parts are listed for the 2021 GMC Savana 2500, from GM GENUINE, DORMAN, GSP and 1 other brand. GM GENUINE 84675730 carries the "Popular" badge.
Part numbers include GM GENUINE 84675730, DORMAN 966480 and GM GENUINE 84675739, among others listed above.
Drive Shaft Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 11548472 | 🇺🇸 US 🇨🇦 CA | RearM5/16-24X1.3 | View on Amazon |
This table covers the Drive Shaft bolts.
This group shows a single part: GM GENUINE 11548472.
Drive Shaft Center Support Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEA / MARMON RIDE CONTROL Fits: 6.6L V8 | A60078 | 🇺🇸 US 🇨🇦 CA | MRC Driveline | View on Amazon |
| WESTAR Fits: 6.6L V8 | DS6558 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 6.6L V8 | 84448547 | 🇺🇸 US 🇨🇦 CA | Center6 speed transmission | View on Amazon |
| ANCHOR Fits: 6.6L V8 | 6144 | 🇺🇸 US 🇨🇦 CA | Centerwithout Studs in Bracket | View on Amazon |
| PIONEER Fits: 6.6L V8 | 646144 | 🇺🇸 US 🇨🇦 CA | 1.1575" Bearing I.D.6.62" Mounting | View on Amazon |
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.
5 Drive Shaft Center Support Bearing parts are listed for the 2021 GMC Savana 2500, from DEA / MARMON RIDE CONTROL, WESTAR, GM GENUINE and 2 other brands. GM GENUINE 84448547 carries the "Popular" badge.
Economy: 2 parts, from DEA / MARMON RIDE CONTROL and WESTAR. A representative part number is DEA / MARMON RIDE CONTROL A60078.
The Standard Replacement section: 3 options from GM GENUINE, ANCHOR and PIONEER. GM GENUINE 84448547 is listed in this group.
This group includes GM GENUINE 84448547, DEA / MARMON RIDE CONTROL A60078 and WESTAR DS6558 and the remaining parts above.
Drive Shaft End Yoke
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 85114564 | 🇺🇸 US 🇨🇦 CA | Fits 3.42 Ratio (GU6), Positraction Limited-Slip Rear Axle (G80) | View on Amazon |
| USA STANDARD GEAR Fits: 6.6L V8 | USA41204 | 🇺🇸 US 🇨🇦 CA | Drive Shaft Pinion Yoke or Differential Pinion FlangeStrap Style | View on Amazon |
This table covers the Drive Shaft End yokes.
2 Drive Shaft End Yoke parts for the 2021 GMC Savana 2500 come from 2 brands — GM GENUINE and USA STANDARD GEAR.
Listed part numbers: GM GENUINE 85114564 and USA STANDARD GEAR USA41204.
Drive Shaft Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 23107857 | 🇺🇸 US 🇨🇦 CA | For Vehicles with 30MM U-Joint Bearing Cups3.42 Rear Axle Ratio (GU6) | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 23170499 | 🇺🇸 US 🇨🇦 CA | Round CornersFor Vehicles with 35MM U-Joint Bearing Cups | View on Amazon |
This table covers the Drive Shaft retainers.
GM GENUINE supplies both parts for the 2021 GMC Savana 2500.
This group includes GM GENUINE 23107857 and GM GENUINE 23170499.
Drive Shaft Slip Yoke
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 6.6L V8 | 40200758 | 🇺🇸 US 🇨🇦 CA | U-Joint: 1485 | View on Amazon |
| DORMAN Fits: 6.6L V8 | 697519 | 🇺🇸 US 🇨🇦 CA | Rear Driveshaft at Transmission6 speed trans. | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 23251192 | 🇺🇸 US 🇨🇦 CA | Front6 speed Automatic trans. | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 19256892 | 🇺🇸 US 🇨🇦 CA | Rear6 speed transmission | View on Amazon |
This table covers the Drive Shaft Slip yokes.
4 Drive Shaft Slip Yoke parts are listed for the 2021 GMC Savana 2500, from GM GENUINE, AAM and DORMAN.
Part numbers include AAM 40200758, DORMAN 697519 and GM GENUINE 23251192, among others listed above.
Drive Shaft Slip Yoke Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 6.6L V8 | 24226707 | 🇺🇸 US 🇨🇦 CA | 6 speed Automatic trans. | View on Amazon |
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.
This group shows a single part: GM GENUINE 24226707.
Gear Oil
SAE 75W-85
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 6.6L V8 | 104091 | 🇺🇸 US | 1 Quart | View on Amazon |
SAE 75W-90
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 6.6L V8 | VV820 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Popular Fits: 6.6L V8 | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 6.6L V8 | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 6.6L V8 | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 6.6L V8 | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | View on Amazon |
| VALVOLINE Fits: 6.6L V8 | VV822 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil16 Gallon KEG | View on Amazon |
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.
7 Gear Oil parts for the 2021 GMC Savana 2500 come from 2 brands — VALVOLINE and ACDELCO. The "Popular" part is VALVOLINE VV820.
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.
Universal Joint
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 6.6L V8 | UJT295 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Bearing Greaseable | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Popular Fits: 6.6L V8 | 295 | 🇺🇸 US 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
| ACDELCO Fits: 6.6L V8 | 45U0304 | 🇺🇸 US 🇨🇦 CA | Greasable Super Strength | View on Amazon |
| FVP Fits: 6.6L V8 | 2150160 | 🇺🇸 US 🇨🇦 CA | PerformanceGreasable | View on Amazon |
| GMB Fits: 6.6L V8 | 2150160 | 🇺🇸 US 🇨🇦 CA | PerformanceGreasable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Popular Fits: 6.6L V8 | 2100160 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting In CROSS | View on Amazon |
| MOOG Popular Fits: 6.6L V8 | 330 | 🇺🇸 US 🇨🇦 CA | Greasable | View on Amazon |
| ACDELCO Fits: 6.6L V8 | 45U0300 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| ACDELCO Fits: 6.6L V8 | 45U2201 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| GKN Fits: 6.6L V8 | U230 | 🇺🇸 US 🇨🇦 CA | RearAngled lubricating nipple in the middle of the cross | View on Amazon |
| GM GENUINE Fits: 6.6L V8 | 88964413 | 🇺🇸 US 🇨🇦 CA | Fits 6 Speed Transmission135.0" Wheelbase | View on Amazon |
This table covers the U-joints in the driveshaft.
11 Universal Joint parts for the 2021 GMC Savana 2500 come from 7 brands — ACDELCO, MOOG, GMB and 4 other brands. The "Popular" part is MOOG 295.
The Economy section: 1 option from WJB / INMOTION PARTS. WJB / INMOTION PARTS UJT295 is listed in this group.
Heavy Duty: 4 parts, from MOOG, ACDELCO, FVP and 1 other brand. A representative part number is MOOG 295.
Standard Replacement: 6 parts, from ACDELCO, GMB, MOOG and 2 other brands. A representative part number is GMB 2100160.
Universal Joint Strap Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.6L V8 | 15021 | 🇺🇸 US 🇨🇦 CA | Rear Shaft All Jointswith 35 mm U-Joint Bearing Caps | View on Amazon |
| DORMAN Fits: 6.6L V8 | 13862 | 🇺🇸 US 🇨🇦 CA | Rear Driveshaft At Rear Axlewith 30 mm U-Joint Bearing Cap | View on Amazon |
This table covers the Universal Joint Strap kits.
2 Universal Joint Strap Kit parts for the 2021 GMC Savana 2500 come from DORMAN.
Listed part numbers: DORMAN 15021 and DORMAN 13862.
Buying Drivetrain Parts for a 2021 GMC Savana 2500
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Every drivetrain part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Universal Joint and Differential Rebuild Kit .
Frequently Asked Questions
How many drivetrain parts fit the 2021 GMC Savana 2500?
Our catalog currently lists 124 drivetrain parts for the 2021 GMC Savana 2500 across 41 subcategories and 25 brands, covering all 3 engine options (2.8L L4 DIESEL Turbocharged, 4.3L V6 and 6.6L V8). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 GMC Savana 2500 engines?
Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of drivetrain problems on a 2021 GMC Savana 2500?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 GMC Savana 2500 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 GMC Savana 2500?
First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 GMC Savana 2500
Drivetrain Parts for Other GMC Savana 2500 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.