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.
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HOMESERVICE MANUALSCHEVROLET2002IMPALA LSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALCOOLING FANENGINE COOLING SYSTEMDIAGNOSTIC INFORMATION & PROCEDURESDTC P0481DIAGNOSTIC AIDS
2002 Chevrolet Impala LS
Diagnostic Aids
2002 Chevrolet Impala LSSECTION Diagnostic Aids
- If the condition is not present, refer to TESTING FOR INTERMITTENT & POOR CONNECTIONS .
- Review the Freeze/Failure Records vehicle mileage since the diagnostic test last failed. This may help determine how often the condition that caused the DTC to be set occurs.
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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.