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.
2003 Hummer H2 V8-6.0LFACTORY OEM SERVICE PROCEDURE
Oil Pan, Engine
Oil Pan Baffle Bolts 12 N.m (106 lb in)
Oil Pan Closeout Cover Bolt - Leff Side 9 N.m (80 lb in)
Oil Pan Closeout Cover Bolt - Right Side 9 N.m (80 lb in)
Oil Pan Cover Bolts 12 N.m (106 lb in)
Oil Pan Drain Plug 25 N.m (18 lb ft)
Oil Pan M8 Bolts Oil Pan-to-Engine Block and Oil Pan-to-Front Cover 25 N.m (18 lb ft)
Oil Pan M6 Bolts - Oil Pan-to-Rear Cover 12 N.m (106 lb in)
Oil Pan Closeout Cover Bolt - Leff Side 9 N.m (80 lb in)
Oil Pan Closeout Cover Bolt - Right Side 9 N.m (80 lb in)
Oil Pan Cover Bolts 12 N.m (106 lb in)
Oil Pan Drain Plug 25 N.m (18 lb ft)
Oil Pan M8 Bolts Oil Pan-to-Engine Block and Oil Pan-to-Front Cover 25 N.m (18 lb ft)
Oil Pan M6 Bolts - Oil Pan-to-Rear Cover 12 N.m (106 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.