Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 17 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)REPAIR INSTRUCTIONSINFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM REPLACEMENT - FRONTINSTALLATION PROCEDURES

2006 Buick Terraza CXL, 3.5 L, AWD

Installation Procedures

2006 Buick Terraza CXL, 3.5 L, AWDSECTION Installation Procedures

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: ECU Retaining Bolts

Courtesy of GENERAL MOTORS CORP.

Position the passenger presence system to the seat making sure to route the wiring correctly.
Insert the wiring harness attachment clips into the cushion frame.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the three ECU retaining bolts that secure the ECU to the bracket.
Tighten: Tighten the bolts to 2 N.m (18 lb in).
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).

Fig 2: Electronic Control Unit (ECU) Module

Courtesy of GENERAL MOTORS CORP.

Connect the electrical connectors to the ECU module and install the CPA.
Install the seat cushion trim cover. Refer to Seat Cushion Cover Replacement - Front in Seats.
Enable the SIR system. Refer to SIR Disabling and Enabling Zone 9 .
Re-zero the passenger presence system. Refer to Passenger Presence System Rezeroing Procedure .

RENDER: 1.0x

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When to See a Mechanic

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.