Diagnostic Procedures
WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK . If DTC P1630 is still present after performing OBD system check, diagnose BCM. See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.