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.
2006 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE
Trim Height Specifications
WARNING: This page is about a different car, the 2005 GMC Canyon and 2005 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Trim Height Specifications
| Suspension | Z Height | D Height |
|---|---|---|
| Trim Height must be verified and adjusted before aligning the vehicle. | ||
| All 4WD | 116 mm (4.57 in) +/-5 mm (0.20 in ) | 171 mm (6.7 in) +/-12 mm (0.47 in ) |
| 2WD High Stance RPO Z71 | 116 mm (4.57 in) +/-5 mm (0.20 in ) | 171 mm (6.7 in) +/-12 mm (0.47 in ) |
| 2WD With RPO Z85 | 78 mm (3.1 in) +/-10 mm (0.40 in ) | 174 mm (6.85 in) +/-12 mm (0.47 in ) |
| 2WD With RPO ZQ8 | 55 mm (2.2 in) +/-10 mm (0.40 in ) | 134 mm (5.3 in) +/-12 mm (0.47 in ) |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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