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

Brake Pressure Modulation, Ground, Power, and Stop Lamp Switch


Object Number: 623229  Size: FS
Master Electrical Component List
03 B Van ABS Schematics (DLC, Indicators and Traction Control Switch)
Fuse Block Underhood Fuses: 10, 6, 4, 13 and 30
Fuse Block Underhood Fuses: 32, 36, 9, 5 and 28
Data Link Connector (DLC) Schematics
Ground G117 - Buick
Ground G117 - Buick
Figure 2:

DLC, Indicators, and Traction Control Switch


Object Number: 623234  Size: FS
Master Electrical Component List
03 B Van ABS Schematics (Wheel Speed Sensors)
03 B Van ABS Schematics (Brake Press. Mod., Ground, Power and Stop Lamp Switch)
Fuse Block-Underhood Fuse: 48, Fuse Block Center Console Fuses
Fuse Block-Underhood Fuse: 48, Fuse Block Center Console Fuses
Turn/Stop Lamps and Indicators - Buick
Cruise Control Schematics
Panel Lamps - Pontiac, Page 2 of 2
Data Link Connector (DLC) Schematics
Ground G200 - Buick
Ground G200 - Buick
Figure 3:

Wheel Speed Sensors


Object Number: 623228  Size: FS
Master Electrical Component List
03 B Van ABS Schematics (DLC, Indicators and Traction Control Switch)