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

Cruise Control - 4.2L


Object Number: 1412990  Size: FS
Master Electrical Component List
Cruise Control Description and Operation 4.2L
Control Module References
Cruise Control 5.3L
Ignition Switch - ACCY/RUN/START, RUN, and START Bus Bars, IGN A and CRANK Fuses
B+ Bus - Underhood Fuse Block
BRAKE, HVAC I, and TBC RUN Fuses
BRAKE, HVAC I, and TBC RUN Fuses
Stop Lamps
ABS, ATC, BLOWER, CIGAR, ECAS, ELEC BRK, FLASH, IPC/DIC, ST/LP, TRAILER, VEH CHMSL, and VEH STOP Fuses
ABS, ATC, BLOWER, CIGAR, ECAS, ELEC BRK, FLASH, IPC/DIC, ST/LP, TRAILER, VEH CHMSL, and VEH STOP Fuses
ABS, ATC, BLOWER, CIGAR, ECAS, ELEC BRK, FLASH, IPC/DIC, ST/LP, TRAILER, VEH CHMSL, and VEH STOP Fuses
SP205
Figure 2:

Cruise Control - 5.3L


Object Number: 1412992  Size: FS
Master Electrical Component List
Cruise Control Description and Operation 5.3L
Control Module References
Cruise Control 4.2L
BRAKE, HVAC I, and TBC RUN Fuses
Ignition Switch - ACCY/RUN/START, RUN, and START Bus Bars, IGN A and CRANK Fuses
BRAKE, HVAC I, and TBC RUN Fuses
B+ Bus - Underhood Fuse Block
Stop Lamps
ABS, ATC, BLOWER, CIGAR, ECAS, ELEC BRK, FLASH, IPC/DIC, ST/LP, TRAILER, VEH CHMSL, and VEH STOP Fuses
ABS, ATC, BLOWER, CIGAR, ECAS, ELEC BRK, FLASH, IPC/DIC, ST/LP, TRAILER, VEH CHMSL, and VEH STOP Fuses
SP205
ABS, ATC, BLOWER, CIGAR, ECAS, ELEC BRK, FLASH, IPC/DIC, ST/LP, TRAILER, VEH CHMSL, and VEH STOP Fuses
G108