GM Service Manual Online
For 1990-2009 cars only
Figure 1:

SIR Modules


Object Number: 801443  Size: LF
(1)Steering Wheel
(2)Inflatable Restraint Steering SIR Coil
(3)Inflatable Restraint Steering Wheel Module
(4)Inflatable Restraint I/P Module
(5)Inflatable Restraint I/P Module Connector
(6)Inflatable Restraint Roof Rail Module - Passenger Connector (Driver Similar)
(7)Inflatable Restraint Roof Rail Module - Passenger (Driver Similar)
(8)Inflatable Restraint Roof Rail Module Tether - Passenger (Driver Similar)
(9)Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector
(10)Inflatable Restraint Sensing and Diagnostic Module (SDM)
(11)Inflatable Restraint Side Impact Module - Driver (Passenger Similar)
(12)Seat Belt Pretensioner - Driver (Passenger Similar) and Seat Belt Switch - Driver
(13)Driver Seat (Passenger Similar)
Figure 2:

SIR Sensors


Object Number: 801446  Size: LF
(1)Inflatable Restraint Front End Discriminating Sensor
(2)Inflatable Restraint Front End Discriminating Sensor Connector
(3)Inflatable Restraint Side Impact Sensor - Passenger (Driver Similar)
(4)Inflatable Restraint Side Impact Sensor - Passenger Connector (Driver Similar)