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

Power and Ground


Object Number: 737605  Size: FS
Master Electrical Component List
Battery Voltage to the Rear Fuse Block
ELC, RRFOG, ALDL Fuses and the ELC, REAR DEFOG, F/TNKDR REL, and F/TNKDRLOCK Relays (Fuse Block - Rear)
G201 (2 of 2)
G201 (2 of 2)
Class 2 Serial Data
G201 (1 of 2)
Figure 2:

Class 2 Serial Data


Object Number: 737606  Size: FS
Master Electrical Component List
Power and Ground