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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (Supplemental Inflatable Restraint System) >> Repair Instructions >> Inflatable Restraint Passenger Presence System Replacement - Front >> Installation Procedures

Installation Procedures

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating SIR ECU & Wiring Harness
    GM1282185Courtesy of GENERAL MOTORS CORP.
  1. Position the passenger presence system to the seat making sure to route the wiring correctly.
  2. Insert the wiring harness attachment clips into the cushion frame.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the three ECU retaining bolts that secure the ECU to the bracket.

    Tighten:  Tighten the bolts to 2 N.m (18 lb in).

  4. Install the ECU bracket retaining bolts (3) that secure the unit to the seat cushion frame.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

    5. Fig 2: Identifying Connector Position Assurance (CPA) & Electrical Connectors
    GM1282550Courtesy of GENERAL MOTORS CORP.
  5. Connect the electrical connectors to the ECU module and install the CPA.
  6. Install the seat cushion trim cover. Refer to Seat Cushion Cover Replacement - Front in Seats.
  7. Enable the SIR system. Refer to SIR Disabling and Enabling Zone 9 .
  8. Re-zero the passenger presence system. Refer to Passenger Presence System Rezeroing Procedure .
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