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
- Monitoring misfire current counters or misfire graph, may help isolate fuel injector that is causing condition.
- Operating vehicle over a wide temperature range may help isolate fuel injector that is causing condition.
- Perform fuel injector coil test within conditions of customer's concern. A fuel injector condition may only be apparent at a certain temperature, or under certain conditions.
- If fuel injector coil test does not isolate condition, perform fuel injector balance test. See FUEL INJECTOR BALANCE TEST WITH SPECIAL TOOL (4.2L) or FUEL INJECTOR BALANCE TEST WITH TECH 2 (4.2L) .
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.