GM Service Manual Online
For 1990-2009 cars only

Caution: This vehicle is equipped with a Supplemental Inflatable Restraint (SIR) System. Failure to follow the correct procedure could cause the following conditions:

   • Air bag deployment
   • Personal injury
   • Unnecessary SIR system repairs
In order to avoid the above conditions, observe the following guidelines:
   • Refer to SIR Component Views in order to determine if you are performing service on or near the SIR components or the SIR wiring.
   • If you are performing service on or near the SIR components or the SIR wiring, disable the SIR system. Refer to Disabling the SIR System.

The SDM is able to maintain a voltage that is strong enough to cause a deployment for up to 10 seconds after the ignition switch is turned to the OFF position, or until the battery is disconnected. Most of the service procedures require the disconnection of the Air Bag - 1 Fuse and the inflator module circuits from the deployment loops in order to avoid an accidental deployment.

Disabling the SIR System

For information on disabling the SIR system, refer to Disabling the SIR System in Supplemental Inflatable Restraint (SIR) Systems.

Enabling the SIR System

For information on disabling the SIR system, refer to Enabling the SIR System in Supplemental Inflatable Restraint (SIR) Systems.

Handling Electrostatic Discharge (ESD) Sensitive Parts

Many solid state electrical components may be damaged by Electrostatic Discharge (ESD). Not all of the solid state electrical components will display a label that indicates the sensitivity, therefore, always perform the following precautionary procedure when handling electrical components:

  1. Touch a metal ground point on the vehicle in order to discharge the personal static electricity (electrostatic charge) that is produced as a result of body movement, when performing any of the following activities:
  2. • Sliding across the seat of the vehicle
    • Sitting down
    • Getting up
    • Walking
  3. Do not touch any of the exposed electrical terminals on the components or the connectors with your fingers or any tools.
  4. The connector that is being inspected may be tied into a circuit that may be damaged by Electrostatic Discharge (ESD).

  5. During the a connector disconnection procedure, never allow a tool to come into contact with or come between the exposed terminals.
  6. Never ground, use a jumper on, or use test equipment probes on any of the components or connectors unless so instructed in a diagnostic procedure. Always connect the ground lead before using the test equipment.
  7. Do not remove the solid state component from the packaging prior to installing the component.
  8. Always touch the package containing the solid state to ground prior to opening the package.
  9. The solid state components may be damaged under the following conditions:

    • The component is bumped or dropped.
    • The component is placed on a metal work table.
    • The component is placed on or near another component that operates electrically, such as a radio, a television, or a oscilloscope.