GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Terrain 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 Inflatable Restraint Sensing and Diagnostic Module Replacement

Removal Procedure

    Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section.

    Caution: Refer to SIR Caution in the Preface section.


    Object Number: 1724853 Size: SH

    Caution: If the vehicle interior is exposed to moisture and becomes soaked up to the level of the sensing and diagnostic module (SDM), the SDM and SDM harness connector must be replaced. The SDM could be activated when powered, which could cause airbag deployment and result in personal injury.

  1. Disable the supplemental inflatable restraints (SIR). Refer to SIR Disabling and Enabling.
  2. Remove the floor console. Refer to Console Replacement.
  3. Remove the connector position assurance lock, which is tethered to the SDM connector.
  4. Disconnect the SDM electrical connector (2).
  5. Remove the SDM mounting bolts (1).
  6. Remove the SDM (3).

Installation Procedure

    Object Number: 1724853 Size: SH
  1. Install the SDM (3)with the arrow pointing toward front of vehicle.

    2. Notice: Refer to Fastener Notice in the Preface section.

    Caution: Be careful when you handle a sensor. Do not strike or jolt a sensor. Before applying power to a sensor:

       • Remove any dirt, grease, etc. from the mounting surface.
       • Position the sensor horizontally on the mounting surface.
       • Point the arrow on the sensor toward the front of the vehicle.
       • Tighten all of the sensor fasteners and sensor bracket fasteners to the specified torque value.
    Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.

  2. Install the SDM mounting bolts (1).

    3. Tighten
    Tighten the SDM mounting bolts to 10 N·m (89 lb in).

  3. Connect the SDM electrical connector (2).
  4. Install the connector position assurance lock, which is tethered to the SDM connector.
  5. Install the floor console. Refer to Console Replacement.
  6. Enable the SIR. Refer to SIR Disabling and Enabling.
  7. If new SDM was installed perform the body control module (BCM) and SDM reprogramming procedure. Refer to Body Control Module Programming and Setup and Inflatable Restraint Sensing and Diagnostic Module Programming and Setup.