GM Service Manual Online
For 1990-2009 cars only
Figure 1:
Object Number: 391027  Size: LF
(1)Inflatable Restraint IP Module
(2)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(2)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(3)SIR Wiring Harness
(4)Inflatable Restraint Steering Wheel Module Coil
(5)Inflatable Restraint Steering Wheel Module
Figure 2:

SIR Component Views with PSIR


Object Number: 625329  Size: LF
(1)Inflatable Restraint IP Module
(2)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(2)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(3)SIR Wiring Harness
(4)Inflatable Restraing IP Module Switch (PSIR)
(5)IP Accessory Trim Plate
(6)Inflatable Restraint IP Module LED (PSIR)
(7)Inflatable Restraint Steering Wheel Module Coil
(8)Inflatable Restraint Steering Wheel Module