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

PWR and Solenoids


Object Number: 649233  Size: FS
Master Electrical Component List
Automatic Transmission Electrical Connector Description
Park/Neutral Position Switch
OBD II Symbol Description Notice
Ignition A, Ignition B Fuses, and Ignition Switch
Cruise, Heater A/C, and Brake Fuses
Radio 1, Wiper, Transmission, and Crank Fuses
Radio 1, Wiper, Transmission, and Crank Fuses
Power, Ground, DLC and Indicator
4.3L, 5.0L and 5.7L Engines
Figure 2:

Park/Neutral Position Switch


Object Number: 762824  Size: FS
Master Electrical Component List
Automatic Transmission Electrical Connector Description
Switches And VSS
PWR and Solenoids
OBD II Symbol Description Notice
Courtesy, Air Bags, and Turn Backup Fuses
Ignition A, Ignition B Fuses, and Ignition Switch
Headlamp Switch, Instrument Cluster, Park/Neutral Position Switch
Starting System: Gasoline Engines
Shift Lock Control
Backup Lamps
G103 (4.3L, 5.0L, and 5.7L Engines)
Figure 3:

Switches and VSS


Object Number: 649236  Size: FS
Master Electrical Component List
Automatic Transmission Electrical Connector Description
Park/Neutral Position Switch
OBD II Symbol Description Notice
Automatic Transmission Schematic Icons