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

Automatic Transmission Shift Lock Control Solenoid: Class 2


Object Number: 665988  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 Inputs


Object Number: 665993  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