Diagnostic Instructions

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Perform the DIAGNOSTIC SYSTEM CHECK - VEHICLE prior to using this diagnostic procedure.
Review STRATEGY BASED DIAGNOSIS for an overview of the diagnostic approach.
DIAGNOSTIC PROCEDURE INSTRUCTIONS provides an overview of each diagnostic category.