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.
2012 GMC Terrain FWD V6-3.0LFACTORY OEM SERVICE PROCEDURE
Timing Cover
Front cover bolts 1-23
First pass 20 Nm (14 lb ft)
Second pass 20 Nm (14 lb ft)
Third pass 60 degrees
Front cover bolts 24 15 Nm (11 lb ft)
Front cover bolts 25 65 Nm (48 lb ft)
Note: Engine front cover bolts in the number (25) location are model dependent and may not apply
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.