Trouble Shooting: Notes

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For information not covered in this article, see * STARTER - GENERAL TROUBLE SHOOTING * .

Note condition and operation of SECURITY indicator light. If SECURITY indicator light stays on or flashes continuously, repair anti-theft system as necessary. See appropriate ANTI-THEFT SYSTEMS in DOOR LOCKS & ANTI-THEFT SYSTEMS. Verify customer complaint by operating suspected system. Visually inspect for obvious signs of mechanical and electrical damage. Inspect for loose or corroded connections, damaged wiring harnesses and/or switches. Check for a broken or partially broken wire inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. Ensure any aftermarket electronic equipment is properly installed. If fault is found, repair as necessary. If no fault is found, perform self-diagnostics. See SELF-DIAGNOSTIC SYSTEM .