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

w/Console Shift


Object Number: 800174  Size: FS
Master Electrical Component List
Automatic Transmission Shift Lock Control Description and Operation
Column Shift
G301
Rear Fuse Block- IGN 3 Relay, IGN 3 Fuse
G201 (2 of 3)
G201 (2 of 3)
Class 2 Serial Data (1 of 3)
Class 2 Serial Data (1 of 3)
Ignition Switch
Ignition Feeds to Underhood and Rear Fuse Blocks
Rear Fuse Block- RR BLO, RRDR MDL, HVAC BAT, STOP LP, IGN SW, TSIG/HAZ Fuse
Ignition Feeds to Underhood and Rear Fuse Blocks
Ksp Rear Fuse Block Battery Voltage
Rear Fuse Block- IGN 3 Relay, IGN 3 Fuse
Rear Fuse Block- IGN 3 Relay, IGN 3 Fuse
Rear Fuse Block- RR BLO, RRDR MDL, HVAC BAT, STOP LP, IGN SW, TSIG/HAZ Fuse
Figure 2:

w/Column Shift


Object Number: 800176  Size: FS
Master Electrical Component List
Automatic Transmission Shift Lock Control Description and Operation
Reverse Lockout Solenoid Control
Console Shift
G201 (2 of 3)
G201 (2 of 3)
Class 2 Serial Data (1 of 3)
Class 2 Serial Data (1 of 3)
Class 2 Serial Data (1 of 3)
Rear Fuse Block- RR BLO, RRDR MDL, HVAC BAT, STOP LP, IGN SW, TSIG/HAZ Fuse
Ignition Switch
Class 2 Serial Data (3 of 3)
Class 2 Serial Data (3 of 3)
Ksp Rear Fuse Block Battery Voltage
Figure 3:

Reverse Lockout Control (w/D55)


Object Number: 800177  Size: FS
Master Electrical Component List
Reverse Lockout System Description and Operation
Column Shift
G201 (2 of 3)
G201 (2 of 3)
Ignition Feeds to Underhood and Rear Fuse Blocks
Ignition Feeds to Underhood and Rear Fuse Blocks
Ignition Feeds to Underhood and Rear Fuse Blocks