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Home › GMC › 2003 › Sierra 1500 HD, RWD › Repair and Diagnosis › External Pages › Different car › Section 249 (Supplemental Inflatable Restraint System) › Repair Instructions › SIR Disabling and Enabling Zone 1 › Enabling Procedure

Enabling Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the key from the ignition.
  2. Connect the front end sensor connectors (2) to both front end sensors.
    Fig 1: Connecting The Front End Sensor Connectors To Both Front End Sensors - Zone 1
    GM859932Courtesy of GENERAL MOTORS CORP.
  3. Install the CPAs to both front end sensor connectors (2).
  4. Install the SIR fuse into the fuse block.
  5. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
    1. The AIR BAG indicator will flash 7 times.
    2. The AIR BAG indicator will then turn OFF.
  6. Perform theDiagnostic System Check - SIR  if the AIR BAG indicator does not operate as described.
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