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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 >> Disabling the SIR System

Disabling the SIR System

    IMPORTANT:

    Refer to SIR Service Precautions  before disabling the SIR system.

  1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.
  2. Turn OFF the ignition.
  3. Remove the key from the ignition.
    4. IMPORTANT:

    With the AIR BAG Fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

  4. Remove the AIR BAG Fuse from the fuse block.
    5. Fig 1: Locating Inflatable Restraint Steering Wheel Module Connector
    GM190000Courtesy of GENERAL MOTORS COMPANY
  5. Remove the connector position assurance (CPA) (1) from the steering wheel module yellow 2-way connector (2) located at the base of the steering column.
  6. Disconnect the steering wheel module yellow 2-way connector (2) located at the base of the steering column.
    7. Fig 2: View Of Connector Position Assurance (CPA) & I/P Module Yellow 4-Way Connector
    GM748421Courtesy of GENERAL MOTORS COMPANY
  7. Access the IP module yellow 2-way connector (1) located behind the main IP support by opening the glove box and pressing in on the sides. This will allow the glove box to extend beyond the stops and to fully open. The IP module connector will be attached to the main IP support.
  8. Remove the CPA from the IP module yellow 2-way connector (1) located behind the IP support.
  9. Disconnect the IP module yellow 2-way connector (1) located behind the IP support.
    10. Fig 3: View Of RF & LF Side Impact Module Yellow 2-Way Connectors
    GM595705Courtesy of GENERAL MOTORS COMPANY
  10. Remove the CPA from the LF side impact module yellow 2-way connector (2) located under the driver seat.
  11. Disconnect the LF side impact module yellow 2-way connector (1) located under the driver seat.
  12. Remove the CPA from the RF side impact module yellow 2-way connector (2) located under the passenger seat.
  13. Disconnect the RF side impact module yellow 2-way connector (1) located under the passenger seat.
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