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.
Installation Procedure
2008 Pontiac Grand Prix BaseSECTION Installation Procedure
WARNING: This page is about a different variant/trim than selected.
- Correctly position the spark plug washer.
- Inspect the spark plug gap. Adjust the gap as needed.
Specification: Spark plug gap: 1.016 mm (0.040 in).
- Hand start the spark plug in the corresponding cylinder.
- Tighten the spark plug.
Tighten: Tighten the plug to 15 N.m (11 lb ft).
- Install the spark plug wire. Refer to Spark Plug Wire Replacement .
NOTE:
Refer to Fastener Notice
.
RENDER: 1.0x
NO RELATED
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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.