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Home >> GMC >> 2001 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Repair Instructions >> Enabling the SIR System

Enabling the SIR System

    Fig 1: View Of RF & LF Side Impact Module Yellow 2-Way Connectors
    GM595705Courtesy of GENERAL MOTORS COMPANY
  1. Remove the key from the ignition.
  2. Connect the RF side impact module yellow 2-way connector (1) located under the passenger seat.
  3. Install the connector position assurance (CPA) to the RF side impact module yellow 2-way connector (2) located under the passenger seat.
  4. Connect the LF side impact module yellow 2-way connector (1) located under the driver seat.
  5. Install the CPA to the LF side impact module yellow 2-way connector (2) located under the driver seat.
    6. Fig 2: View Of Connector Position Assurance (CPA) & I/P Module Yellow 4-Way Connector
    GM748421Courtesy of GENERAL MOTORS COMPANY
  6. Connect the IP module yellow 2-way connector (1) located behind the main IP support.
  7. Install the CPA to the IP module yellow 2-way connector (1) located behind the main IP support.
    8. Fig 3: Locating Inflatable Restraint Steering Wheel Module Connector
    GM190000Courtesy of GENERAL MOTORS COMPANY
  8. Connect the steering wheel module yellow 2-way connector (2) located at the base of the steering column.
  9. Install the CPA (1) to the steering wheel module yellow 2-way connector (2) located at the base of the steering column.
  10. Install the AIR BAG Fuse to the fuse block.
  11. 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.
  12. Perform the Diagnostic System Check - SIR  if the AIR BAG indicator does not operate as described.
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