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.
2002 Pontiac Aztek AWDFACTORY OEM SERVICE PROCEDURE
Diagnostic Aids
- A small amount of resistance in battery positive voltage circuit to PCM may cause a no-start. Test battery positive voltage circuit for excessive resistance or corrosion.
- PCM grounds will cause a no-start only if all of them are not making a good connection.
- A loose CKP sensor may cause an intermitted no-start by moving away from reluctor wheel. Inspect sensor and mating surface for being clean and tight.
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.