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Diagnostic Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. 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 .
  2. Turn ignition off. If air bag modules have not deployed, go to next step. If air bag modules have deployed, go to step  5.
  3. Inspect vehicle and undercarriage for signs of impact. If no impact has occurred, go to next step. If impact has occurred, go to step  5.
  4. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM)  under REMOVAL & INSTALLATION. Go to step  6.
  5. Replace components and perform inspections as required following an accident. See POST-COLLISION INSPECTION . Go to next step.
  6. Reconnect all SIR components. Go to SIR DIAGNOSTIC SYSTEM CHECK .
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