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

Ground and Power


Object Number: 1912785  Size: FS
Master Electrical Component List
Transmission General Description
Control Module References
BCM, EBCM, ECM
Figure 2:

BCM, EBCM, ECM


Object Number: 1912787  Size: FS
Master Electrical Component List
Transmission General Description
Control Module References
BCM, Tap Up/Tap Down Switch
Ground and Power
Figure 3:

BCM, Tap Up/Tap Down Switch


Object Number: 1912789  Size: FS
Master Electrical Component List
Transmission General Description
Control Module References
BCM, EBCM, ECM