GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Buick
🢒
2001
🢒
Park Avenue
🢒
Body and Accessories
🢒
Cellular Communication
🢒 OnStar Schematics
Figure
1:
Power and Ground
Master Electrical Component List
OnStar Description and Operation
Keypad and Mic Signals
Rear Fuse Block- RDO and CD/PH Fuses
Rear Fuse Block- RDO and CD/PH Fuses
Class 2 Serial Data Line
G202 (1 of 4)
G202 (3 of 4)
Figure
2:
Keypad and Mic Signals
Master Electrical Component List
OnStar Description and Operation
VIU Output Signals
Power and Ground
G400 (1 of 2)
Figure
3:
VIU Output Signals
Master Electrical Component List
OnStar Description and Operation
VIU and VCU Signals
Keypad and Mic Signals
Horns Schematics
Power, Ground and Serial Data Lines
Figure
4:
VIU and VCU Signals
Master Electrical Component List
OnStar Description and Operation
VIU Output Signals