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 L5-3.7LFACTORY OEM SERVICE PROCEDURE
Thread Repair Specifications
Thread Repair Specifications
Engine Block - Top View
Engine Block - Bottom View
Engine Block - Left Side View
Engine Block - Right Side View
Engine Block - Front View
Engine Block - Rear View
Cylinder Head - Top View
Cylinder Head - End - Front View
Cylinder Head - End - Rear View
Cylinder Head - Intake Manifold Deck View
Cylinder Head - Exhaust Manifold Deck View
Oil Pan - Bottom View
Oil Pan - Rear View
Engine Front Cover
Crankshaft Rear Oil Seal Housing
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.
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