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

Transmission Solenoids and VSS


Object Number: 1637604  Size: FS
Master Electrical Component List
Control Module References
Transmission Switches, TFT and A/T ISS Sensor
Engine Controls Schematic Icons
G109
Underhood Fuse Block, RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1, and TRANS Fuses
G109
Figure 2:

Transmission Switches, TFT and A/T ISS Sensor


Object Number: 1637606  Size: FS
Master Electrical Component List
Control Module References
PNP Switch
Transmission Solenoids and VSS
Engine Controls Schematic Icons
Engine Controls Schematic Icons
Figure 3:

PNP Switch


Object Number: 1637608  Size: FS
Master Electrical Component List
Control Module References
Tap Up/Tap Down Switch
Transmission Switches, TFT and A/T ISS Sensor
Engine Controls Schematic Icons
G103, G104, and G105
Figure 4:

Tap Up/Tap Down Switch


Object Number: 1637609  Size: FS
Master Electrical Component List
Control Module References
PNP Switch
Engine Controls Schematic Icons
Underhood Fuse Block, RUN/CRANK Relay, ABS, IGN 1, INJ, PCM IGN 1, and TRANS Fuses
Seats and Center Console
A/T Shift Lock Control Schematics
G303