Diagnostic Procedure
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. 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 .
- Using scan tool, verify that PCM is programmed with correct VIN. If VIN is not correct, go to next step. If VIN is correct, go to step 4.
- Using scan tool, program correct VIN into PCM. Go to step 9.
- 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 replaced, go to step 9. If SDM was not replaced, go to next step.
- Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM) under REMOVAL & INSTALLATION. Go to next step.
- Using scan tool, reprogram VTD system. Go to next step.
- Reconnect all SIR components. Using scan tool, clear all DTC's. Turn ignition off for 10 seconds. If no DTC's are retrieved, system is normal.