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.
2009 Hummer H3 AlphaFACTORY OEM SERVICE PROCEDURE
Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Adapter Studs | 14 N.m | 10 lb ft |
| Case Bolts | 25 N.m | 18 lb ft |
| Drain Plug | 16 N.m | 12 lb ft |
| Encoder Motor Bolts | 10 N.m | 89 lb in |
| Encoder Motor Bracket Bolt | 10 N.m | 89 lb in |
| Encoder Motor Support Bracket Nuts | 5 N.m | 44 lb in |
| Fill Plug | 16 N.m | 12 lb ft |
| Front Drive Shaft Universal Joint Clamp Bolts | 20 N.m | 15 lb ft |
| Front Output Shaft Flange Nut | 319 N.m | 235 lb ft |
| Transfer Case Shield Bolts | 30 N.m | 23 lb ft |
| Transfer Case to Transmission Nuts | 50 N.m | 37 lb ft |
| Transmission Crossmember to Frame Bracket - Horizontal - Bolts and Nuts | 50 N.m | 37 lb ft |
| Transmission Crossmember to Frame - Vertical - Bolts | 100 N.m | 74 lb ft |
| Transmission Mount to Support Nuts | 57 N.m | 42 lb ft |
| Vehicle Speed Sensor | 17 N.m | 13 lb ft |
| Vent | 6 N.m | 53 lb in |
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.