Preliminary Inspection
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Verify customers complaint. Before performing any testing, perform a visual inspection. Review the DESCRIPTION & OPERATION prior to diagnosing by symptom. Check coolant level and condition. Check system fuses. Check connectors for loose, damaged or corroded terminals. Check for damaged wiring harnesses. Check for damaged or binding actuator cable. If area of fault cannot be located or repaired during preliminary inspection, check self-diagnostic system. See SELF-DIAGNOSTIC SYSTEM . Repair as necessary.
If no problem is found, attempt diagnosis by symptom. See SYMPTOM DIAGNOSIS .