GM Service Manual Online
For 1990-2009 cars only

Caution: Refer to Servicing the SIR System Caution in the Preface section.

Caution: Refer to Sensing and Diagnostic Module Voltage after Ignition is Turned Off Caution in the Preface section.

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