Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Chevrolet Traverse LS, 4WDFACTORY OEM SERVICE PROCEDURE
Fastener Specifications
Single Use Non-Threaded Fasteners/Components
|
NOTE:
All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal. |
|---|
| Application |
| Power Transfer Unit Adapter Seal |
| Extension Housing Cover Seal |
| Power Transfer Unit Face Seal |
| Power Transfer Unit Half Shaft Seal |
| Power Transfer Unit Input Shaft Seal |
| Power Transfer Unit Intermediate Drive Shaft Seal |
| Power Transfer Unit Intermediate Drive Shaft Clip |
| Power Transfer Unit Output Shaft Seal |
| Power Transfer Unit Propeller Shaft Seal |
| Power Transfer Unit Propeller Shaft Retainer |
Reusable Threaded Fastener Tightening Specifications
|
NOTE:
All fasteners listed in this table can be reused after removal. |
|
|---|---|
| Application | Specification |
| Metric (English) | |
| Transfer Case Bracket Bolt @ Engine | 22 N.m (16 lb ft) |
| Power Transfer Unit Shift Actuator Bolt | 10 N.m (89 lb in) |
| Power Transfer Unit Bolt | 100 N.m (74 lb ft) |
| Power Transfer Unit Cover Housing Bolt | 22 N.m (16 lb ft) |
| Power Transfer Unit Extension Housing Bolt | 22 N.m (16 lb ft) |
| Power Transfer Unit Rear Pinion Housing Bolt | 22 N.m (16 lb ft) |
| Power Transfer Unit Case @ Transfer Case Bracket Bolt | 58 N.m (43 lb ft) |
| Transfer Case Bracket Bolt @ Power Transfer Unit Extension Housing | 58 N.m (43 lb ft) |
| Power Transfer Unit Drain Plug | 39 N.m (29 lb ft) |
| Power Transfer Unit Fill Plug | 39 N.m (29 lb ft) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.