Buick Regal: SIR Service Precautions

WARNING: If a service procedure indicates that a module is to be replaced, a new production unit MUST be ordered from the GM Parts Catalog or certified supplier. Using a module that has been reset by a 3rd party company is strictly prohibited. Not using a new production unit may result in improper performance of the safety system in the event of an accident, which may result in bodily injury.

WARNING: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

WARNING: Do not strike or jolt the inflatable restraint sensing and diagnostic module (SDM). Before applying power to the SDM, make sure that it is securely fastened with the arrow facing toward the front of the vehicle. Failure to observe the correct installation procedure could cause SIR deployment, personal injury, or unnecessary SIR system repairs.

General Service Instructions

NOTE: The Inflatable Restraint Sensing and Diagnostic Module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the SIR air bags. Deployment power may be available for up to 2 minutes after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the SIR air bags from the reserved energy supply.

NOTE: The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity:

• Do not expose air bags to temperatures above 85 ºC (185 ºF)
• Verify the correct replacement part number. Do not substitute a component from a different vehicle.
• Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system.

NOTE: Discard any of the following components if it has been dropped from a height of 80 cm (31.5 in) or greater:

• Inflatable Restraint Sensing and Diagnostic Module
• Passenger Presence System
• Airbag
• Driver steering wheel airbag coil
• Seat belt pretensioner
• Impact sensor

AIRBAG FRONT END DISCRIMINATING SENSOR REPLACEMENT

WARNING: SIR Warning.

WARNING: SIR Inflator Module Handling and Storage Warning.

WARNING:

Following the deployment of a side impact air bag, inspect the following parts for damage. Replace these parts if necessary:

• The seat cushion frame
• The seat recliner, if equipped
• The seat adjuster
• The seat back frame

Failure to do so may cause future personal injury.

Preliminary Procedure Disable the SIR system. Refer to SIR Disabling and Enabling.

1. Airbag Front End Discriminating Sensor[2x]

CAUTION: Refer to Fastener Caution.

Procedure

1. Disconnect the electrical connector.
2. Loosen the fastener and slide the sensor out of the keyhole slot.
3. Enable the SIR System. Refer to SIR Disabling and Enabling

NOTE: Integral sensor assembly bolt uses Left Hand threads. Use counterclockwise rotation to loosen fastener at TORX tip end. If accessing at pan head end of the fastener, use clockwise rotation to loosen bolt.

Tighten 7.5N.m (66 lb in)

AIRBAG FRONT END DISCRIMINATING SENSOR PROTECTOR REPLACEMENT

1. Airbag Front End Discriminating Sensor Protector Nut [2x]

CAUTION: Fastener Caution

Tighten 9N.m (80 lb in)

2. Airbag Front End Discriminating Sensor Protector

AIRBAG SIDE IMPACT SENSOR REPLACEMENT

WARNING: SIR Warning.

WARNING: Following the deployment of a side impact air bag, inspect the following parts for damage. Replace these parts if necessary:

• The seat cushion frame
• The seat recliner, if equipped
• The seat adjuster
• The seat back frame

Failure to do so may cause future personal injury.

Preliminary Procedures

1. SIR Disabling and Enabling.

2. Front Side Door Trim Replacement.

3. Front Side Door Water Deflector Replacement.

1. Airbag Side Impact Sensor Nut
   CAUTION: Fastener Caution
   Tighten 7.5N.m (66 lb in)
2. Airbag Side Impact Sensor

Procedure

1. Disconnect the electrical connector.
2. Loosen the fastener and slide the sensor out of the keyhole slot.

NOTE: The sensor is located on the inside of the front door inner panel.

NOTE: The fastener is integral to the sensor assembly, DO NOT remove separately.

AIRBAG SENSING AND DIAGNOSTIC MODULE REPLACEMENT

WARNING: Do not strike or jolt the inflatable restraint Sensing and Diagnostic Module (SDM). Before applying power to the SDM, make sure that it is securely fastened. Failure to observe the correct installation procedure could cause Supplemental Inflatable Restraint (SIR) deployment, personal injury, or unnecessary SIR system repairs.

WARNING: Refer to SIR Warning.

Preliminary Procedures

1. Disable the SIR system. Refer to SIR Disabling and Enabling.

2. Transmission Control - Remove.

• GF9: Refer to Transmission Control Replacement (Without Base) or Transmission Control Replacement (With Base)
• AF50: Refer to Transmission Control Replacement

1. Airbag Sensing and Diagnostic Module Nut[3x]
   CAUTION: Refer to Fastener Caution.
   Tighten 9 N.m (80 lb in)
2. Airbag Sensing and Diagnostic Module
   Procedure
   1. Disconnect the electrical connectors.
   2. Perform the necessary programming and setup procedure: Refer to Control Module References
   3. Enable the SIR System. Refer to SIR Disabling and Enabling

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