Diagnostic Procedure
WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
- If SIR diagnostic system check has been performed, go to next step. If SIR diagnostic system check has not been performed, go to SIR DIAGNOSTIC SYSTEM CHECK .
- Install scan tool to Data Link Connector (DLC), located under left side of instrument panel. Turn ignition on. Using scan tool, verify PCM is programed with correct VIN. If VIN is not correct, go to next step. If VIN is correct, go to step 4.
- Using scan tool, reprogram PCM with correct VIN. Go to step 8.
- If BCM was replaced, go to next step. If BCM was not replaced, go to step 6.
- Using scan tool, program BCM to learn restraints identification from SDM. Go to step 8.
- If SDM was not replaced, go to next step. If SDM was replaced, go to step 8.
- Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM) under REMOVAL & INSTALLATION. Go to next step.
- Using scan tool, reprogram Vehicle Theft Deterrent (VTD) system. DO NOT use 30 minute manual relearn procedure. Go to next step.
- Reconnect all SIR components. Ensure all components are properly mounted. Using scan tool, erase DTC's. Turn ignition off for 10 seconds. Go to SIR DIAGNOSTIC SYSTEM CHECK .