Self-Diagnostic System: Notes

WARNING: This page is about a different car, the 2001 Cadillac Seville and 2001 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Diagnostic trouble code tests are written specifically for use with GM Tech I or Tech II scan tools. Generic scan tool can be used but may have limited functions. This article only covers the portion of those systems which relates to starting system diagnosis. For further information, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE or BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.