GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Savana 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 SIR Schematics
Figure 1:

Module Power, Ground, Serial Data, Vehicle Rollover Sensor (ASF) and Disable Switch
Object Number: 1884026 Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Driver and Passenger AIR BAG Modules
Figure 2:

Passenger Presence System Light Duty (without C99 without YF7)
Object Number: 1884030 Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Inflatable Restraint Sensors
Driver and Passenger AIR BAG Modules
Figure 3:

Driver and Passenger AIR BAG Modules
Object Number: 1884028 Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Passenger Presence System Light Duty (without C99 without YF7)
Module Power, Ground, Serial Data, Vehicle Rollover Sensor (ASF) and Disable Switch
Figure 4:

Inflatable Restraint Sensors
Object Number: 1925520 Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Inflatable Restraint Side Impact Sensors and Modules (ASF)
Passenger Presence System Light Duty (without C99 without YF7)
Figure 5:

Inflatable Restraint Side Impact Sensors and Modules (ASF)
Object Number: 1925573 Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Inflatable Restraint Sensors