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 H2 V8-6.2LFACTORY OEM SERVICE PROCEDURE
Timing Components: Specifications
Crankshaft Balancer Bolt - First Pass 150 Nm (110 lb ft)
Crankshaft Balancer Bolt - Second Pass Loosen 360 degrees
Crankshaft Balancer Bolt - Third Pass 50 Nm (37 lb ft)
Crankshaft Balancer Bolt - Final Pass 230 degrees
Front Cover Bolts 25 Nm (18 lb ft)
Timing Chain Tensioner Bolts 25 Nm (18 lb ft)
Crankshaft Balancer Bolt - Second Pass Loosen 360 degrees
Crankshaft Balancer Bolt - Third Pass 50 Nm (37 lb ft)
Crankshaft Balancer Bolt - Final Pass 230 degrees
Front Cover Bolts 25 Nm (18 lb ft)
Timing Chain Tensioner Bolts 25 Nm (18 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.