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

Power, Ground, and Transfer Case Shift Control Module


Object Number: 755667  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
SP201 (4.3L)
INT BATT Fuse
Cigar Lighter/Auxiliary Outlets Schematics
G103 and G105 (2.2 L)
G103 and G105 (2.2 L)
G103 and G105 (2.2 L)
G103 and G105 (2.2 L)
G200, G201 and G207 (Pickup and Crew Cab)
Figure 2:

SP201


Object Number: 755669  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Power, Ground, and Transfer Case Shift Control Module
SIR Caution