Test 3: Security Indicator Light Inoperative
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 GMC Yukon XL, 2000 GMC Yukon, 2000 GMC Sierra, 2000 Chevrolet Tahoe, and 2000 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Always remove Brown connector first and install Brown connector last on BCM.
Turn ignition on, engine off. Using scan tool, command SECURITY indicator light ON and OFF. If SECURITY indicator light turned on and off with scan tool command, see DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM. If SECURITY indicator light does not turn on and off with scan tool command, replace instrument cluster. See appropriate ANALOG INSTRUMENT PANELS article.