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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 78 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)REPAIR INSTRUCTIONSINFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM REPLACEMENT - FRONTINSTALLATION PROCEDURES
2008 Pontiac Grand Prix Base

Installation Procedures

2008 Pontiac Grand Prix BaseSECTION Installation Procedures
WARNING: This page is about a different car, the 2007 Buick LaCrosse and 2007 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 .
  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: Locating Electronic Control Unit (ECU) Module
    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 Front Seat Cushion Cover Replacement .
  7. Enable the SIR system. Refer to SIR Disabling and Enabling .
  8. Re-zero the passenger presence system. Refer to Passenger Presence System Rezeroing .
  9. Refer to Control Module References for programming and setup information.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.