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

Power, and Control Signals


Object Number: 688906  Size: FS
Master Electrical Component List original
Cruise Control Description and Operation
PCM Serial Data
Steering Wheel Controls, Window and Door Lock Switches
IGN 1, PWR Windows/PWR Sunroof, Radio/Cruise, Power Drop and Wiper Fuses
HIGH BLOWER, HAZARD, STOP LAMPS, DOOR LOCKS, POWER MIRRORS Fuses
Steering Wheel Controls
Center High Mounted Stop Lamp
Figure 2:

PCM Serial Data


Object Number: 688909  Size: FS
Master Electrical Component List original
Cruise Control Description and Operation
Power, and Control Signals
Ground G113