This page lists 13 drivetrain parts for the 2021 GMC Savana 3500, across 6 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.
The drivetrain system on the 2021 GMC Savana 3500 moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Axle Shaft (5 parts), Axle / Differential Assembly (2 parts) and Axle Bolt (2 parts). The other 3 part types cover the remaining 4 parts.
The 2021 GMC Savana 3500 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
5 brands supply drivetrain parts for the 2021 GMC Savana 3500, led by GM GENUINE (8 parts), AAM (2 parts) and DORMAN (1 part), plus 2 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 GMC Savana 3500. 1 part has it: AAM 40054774 (Axle Shaft). Each part number opens a page with every vehicle that part fits.
Axle / Differential Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.3L V6 | 84447463 | 🇺🇸 US 🇨🇦 CA | Gear Ratio: 3-42Mounting Hardware Included: No | View on Amazon |
| GM GENUINE Fits: 4.3L V6 | 84596523 | 🇺🇸 US 🇨🇦 CA | Fits Cutaway Van3.73 Rear Axle Ratio (GT4) | View on Amazon |
This table covers the Axle / Differential assemblies.
2 Axle / Differential Assembly parts for the 2021 GMC Savana 3500 come from GM GENUINE.
Part numbers include GM GENUINE 84447463 and GM GENUINE 84596523.
Axle Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Fits: 4.3L V6 | 40023476 | 🇺🇸 US 🇨🇦 CA | 1/2"x13 x1.25" - 6 PT Flange Hex with Adhesivewith 10.5 (In) Rear Axle | View on Amazon |
| GM GENUINE Fits: 4.3L V6 | 20920619 | 🇺🇸 US 🇨🇦 CA | RearCutaway Van | View on Amazon |
This table covers the Axle bolts.
2 Axle Bolt parts are listed for the 2021 GMC Savana 3500, from AAM and GM GENUINE.
Part numbers include AAM 40023476 and GM GENUINE 20920619.
Axle Bumper
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.3L V6 | 06263975 | 🇺🇸 US 🇨🇦 CA | RearExcept Rear Spring (9Q4) | View on Amazon |
| GM GENUINE Fits: 4.3L V6 | 23138214 | 🇺🇸 US 🇨🇦 CA | RearCutaway Van | View on Amazon |
This table covers the Axle bumpers.
GM GENUINE supplies both parts for the 2021 GMC Savana 3500.
Part numbers include GM GENUINE 06263975 and GM GENUINE 23138214.
Axle Hub Key
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.3L V6 | 22760462 | 🇺🇸 US 🇨🇦 CA | 3.73 Rear Axle Ratio (GT4),4.10 Rear Axle Ratio (GT5) | View on Amazon |
This table covers the Axle Hub keys.
This group shows a single part: GM GENUINE 22760462.
Axle Shaft
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 4.3L V6 | 630325 | 🇺🇸 US 🇨🇦 CA | Fits Rear Left9.5" Ring Gear | View on Amazon |
| RICHMOND Fits: 4.3L V6 | 9225174 | 🇺🇸 US 🇨🇦 CA | Excel34.02" Overall Length | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM Popular Fits: 4.3L V6 | 40054774 | 🇺🇸 US 🇨🇦 CA | Rearwith 8 Lug Wheels | View on Amazon |
| GM GENUINE Fits: 4.3L V6 | 86547051 | 🇺🇸 US 🇨🇦 CA | Fits Rear3 door | View on Amazon |
| USA STANDARD GEAR Fits: 4.3L V6 | ZAK630325 | 🇺🇸 US 🇨🇦 CA | Axle Shaft KitIncludes Wheel Bearing, Seal, Studs, Lug Nuts | View on Amazon |
This table covers the Axle shafts.
5 Axle Shaft parts for the 2021 GMC Savana 3500 come from 5 brands — DORMAN, RICHMOND, AAM and 2 other brands. The "Popular" part is AAM 40054774.
The Economy section lists 2 options from DORMAN and RICHMOND — the catalog's value-priced group. DORMAN 630325 is listed in this group.
In the Standard Replacement grade, AAM, GM GENUINE and USA STANDARD GEAR supply 3 parts: built to original-equipment specification. A representative part number is AAM 40054774.
Listed part numbers: AAM 40054774, DORMAN 630325 and RICHMOND 9225174, plus the other parts above.
Axle Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.3L V6 | S606 | 🇺🇸 US 🇨🇦 CA | Fits RearCutaway Van | 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.
This group shows a single part: GM GENUINE S606.
Buying Drivetrain Parts for a 2021 GMC Savana 3500
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: Axle Shaft and Axle / Differential Assembly .
Frequently Asked Questions
How many drivetrain parts fit the 2021 GMC Savana 3500?
Our catalog currently lists 13 drivetrain parts for the 2021 GMC Savana 3500 across 6 subcategories and 5 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 3500 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 3500?
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 3500 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 3500?
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 3500
Drivetrain Parts for Other GMC Savana 3500 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.