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

Power, Ground, Serial Data, and Disable Switch


Object Number: 1778910  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Passenger Presence System (PPS) (AL0)
SIR Schematic Icons
Interior Park
Ignition Switch - ACC/RUN and RUN/START BUS BARS and IGN B Fuse
Passenger Presence System (PPS) (AL0)
G200 - 2 of 2
Seat Belt Schematics
Passenger Presence System (PPS) (AL0)
G304, G305, G306, and G390
SIR Schematic Icons
Power, Ground, DLC and Splice Pack SP205
Figure 2:

Passenger Presence System (PPS) (ALO)


Object Number: 1778911  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Driver and Passenger Air Bag
Power, Ground, Serial Data, and Disable Switch
SIR Schematic Icons
Power, Ground, Serial Data, and Disable Switch
Inside Rearview Mirror Schematics
Power, Ground, Serial Data, and Disable Switch
G304, G305, G306, and G390
Figure 3:

Driver and Passenger Air Bags


Object Number: 1778919  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Front End and Side Impact Sensors and Seat Position Switches
Passenger Presence System (PPS) (AL0)
SIR Schematic Icons
SIR Schematic Icons
SIR Schematic Icons
SIR Schematic Icons
SIR Schematic Icons
SIR Schematic Icons
Figure 4:

Front End and Side Impact Sensors and Seat Position Switches


Object Number: 1778921  Size: FS
Master Electrical Component List
SIR System Description and Operation
Control Module References
Driver and Passenger Air Bag
SIR Schematic Icons
SIR Schematic Icons
SIR Schematic Icons
SIR Schematic Icons
Seat Belt Schematics
SIR Schematic Icons
SIR Schematic Icons
SIR Schematic Icons