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

Pontiac


Object Number: 1499982  Size: FS
Master Electrical Component List
Automatic Transmission Shift Lock Control Description and Operation
Control Module References
Buick
BTSI (3.4L), CRUISE, IGN 1 MAIN, and TRN SIG Fuses
BTSI (3.4L), CRUISE, IGN 1 MAIN, and TRN SIG Fuses
Data Link Connector (DLC)
Figure 2:

Buick


Object Number: 1499985  Size: FS
Master Electrical Component List
Automatic Transmission Shift Lock Control Description and Operation
Control Module References
Pontiac
BTSI (3.4L), CRUISE, IGN 1 MAIN, and TRN SIG Fuses
BTSI (3.4L), CRUISE, IGN 1 MAIN, and TRN SIG Fuses
PTRAIN Relay (2 of 2), BTSI, PT RLY, and PT SENSORS Fuses - 3.6L
B+ Bus 2 of 2
PTRAIN Relay (1 of 2), INJ EVEN, INJ ODD, and O2/MAF SENS Fuses - 3.6L
Data Link Connector (DLC)