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

A/T Shift Lock Control Solenoid: Class 2


Object Number: 886623  Size: FS
Master Electrical Component List
Automatic Transmission Shift Lock Control Description and Operation
Internal Mode Switch Inputs
G200 (1 of 2)
Serial Data Class 2
IGN SW and NSBU Fuses (Rear Fuse Block)
IGN SW and NSBU Fuses (Rear Fuse Block)
Figure 2:

Internal Mode Switch (IMS) Inputs


Object Number: 787401  Size: FS
Master Electrical Component List
Automatic Transmission Shift Lock Control Description and Operation
Automatic Transmission Shift Lock Control Solenoid: Class 2
G104 and G105