Diagnostic Aids
WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Performing the Fuel Injector Coil test may help isolate an intermittent condition. See SYSTEM & COMPONENT TESTING - 4.3L SIERRA & SILVERADO article.
- For an intermittent condition, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.