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

Inflatable Restraint Sensing and Diagnostic Module (SDM) Power and Ground


Object Number: 1424576  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Inflatable Restraint Steering Wheel Module, I/P Module, Front Discriminating Sensors, Seat Belt Pretensioners
SIR Schematic Icons
Ignition Switch 1 of 2
Ignition Switch 2 0f 2
Computer/Integrating Systems DLC Schematic Figure for Graphic 1666852
Fuel Injectors
Ignition Switch 1 of 2
Charge, Air Bag, Malfunction, O/D OFF, Cruise Indicators
Junction Block Instrument Panel - Left
Cellular Communication OnStar Schematic Figure for Graphic 1424554
Fuse Block - Instrument Panel
Fuse Block - Instrument Panel
SP200 and G200
SP201 and G201
Figure 2:

Inflatable Restraint Steering Wheel Module, I/P Module, Front Discriminating Sensors, Seat Belt Pretensioners


Object Number: 1424579  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Inflatable Restraint Side Impact Modules, Roof Rail Modules, Side Impact Sensors
Inflatable Restraint Sensing and Diagnostic Module (SDM) Power and Ground
SIR Schematic Icons
Figure 3:

Inflatable Restraint Side Impact Modules, Roof Rail Modules, Side Impact Sensors


Object Number: 1424581  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Front Passenger Presence System (PPS) Module, Seat Belt Switches, Passenger Seat Belt Warning Lamp
Inflatable Restraint Steering Wheel Module, I/P Module, Front Discriminating Sensors, Seat Belt Pretensioners
SIR Schematic Icons
Figure 4:

Front Passenger Presence System (PPS) Module, Seat Belt Switches, Passenger Seat Belt Warning Lamp


Object Number: 1424584  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Passenger Presence System Sensors
Inflatable Restraint Side Impact Modules, Roof Rail Modules, Side Impact Sensors
SIR Schematic Icons
Ignition Switch 1 of 2
Wash, RR WIP, Wiper, ECU-IG, Gage, Heater, DEF Fuses
Junction Block - Instrument Panel Right
Computer/Integrating Systems DLC Schematic Figure for Graphic 1666852
Ignition Switch 2 0f 2
Power, AM 1, Door, Tail, P/Point, ECU-B, Stop, OBD, INV Fuses
Tail Relay, Turn Signal/Headlamp Switch
Junction Block Instrument Panel - Right
SP107, SP108, G104
SP107, SP108, G104
SP201 and G201
Figure 5:

Passenger Presence System Sensors


Object Number: 1480340  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Front Passenger Presence System (PPS) Module, Seat Belt Switches, Passenger Seat Belt Warning Lamp
SIR Schematic Icons