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

Module Power, Ground, Serial Data, Indicator, Torque and Vehicle Speed Signals


Object Number: 743781  Size: FS
Master Electrical Component List
ABS Description and Operation
Traction Control Switch - Chevy/GMC
B+ Bus - Underhood Fuse Block
ACCY/RUN and RUN/START Bus Bars
ACCY/RUN/START, RUN, and START Bus Bars
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
Brake Switch Input
DLC and SP205
Figure 2:

Traction Control Switch - Chevy/GMC


Object Number: 743785  Size: FS
Master Electrical Component List
ABS Description and Operation
Traction Control Switch - Oldsmobile
Module Power, Ground, Serial Data, Indicator, Torque and Vehicle Speed Signals
ACCY/RUN/START, RUN, and START Bus Bars
ACCY/RUN and RUN/START Bus Bars
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
Courtesy Lamp Supply
G201 - 2 of 2, G305 and G306
Figure 3:

Traction Control Switch - Oldsmobile


Object Number: 893406  Size: FS
Master Electrical Component List
ABS Description and Operation
Traction Control Switch - Chevy/GMC
ACCY/RUN/START, RUN, and START Bus Bars
ACCY/RUN and RUN/START Bus Bars
HVAC I, BRAKE, and TBC RUN Fuses
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
HVAC I, BRAKE, and TBC RUN Fuses
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
G201 - 1 of 2