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Enabling Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the key from the ignition.
    2. Fig 1: View Of Front End Sensor Connector & Frame Crossmember
    GM859932Courtesy of GENERAL MOTORS CORP.
  2. Connect the front end sensor connectors (2) to both front end sensors.
  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 the Diagnostic System Check - SIR  if the AIR BAG indicator does not operate as described.
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