Preliminary Inspection
WARNING: This page is about a different car, the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Begin the system diagnosis by reviewing DESCRIPTION and OPERATION . Reviewing the description and operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the description and operation information will also help you determine if the condition described by the customer is normal operation. Check any aftermarket devices on vehicle which could affect system or cause symptom. For symptom and diagnosis procedure, see SYMPTOM TESTS .
Check fuses, fusible links and circuit breakers. Replace as necessary. Ensure harness connectors are tight and free of corrosion. Ensure ground connections are clean and tight. Operate system through all functions to verify problems.