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

Gas - w/o JL4


Object Number: 1580801  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (Without Throttle Actuator Control)
Control Module References
Gas - JL4
B+ Bus - Underhood Fuse Block - Gas
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
AIRBAG, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
Power, Ground, Serial Data, Indicator, and Stop Lamp Switch (w/o JL4)
BTSI, BTSI BCK/UP, ECM/TCM/GLOW PLUG CNTRL MDL IGN 1, FUEL HTR, O2 SNSR A, O2 SNSR B, PCM IGN 1, SPARE and TRLR BCK/UP Fuses
AIRBAG, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
Power, Ground, DLC, and Splice Pack SP200
DRV PWR TRN MIR, PASS TRN MIR and STOP/CHMSL Fuses
Stop Lamp Switch
Stop Lamp Switch
Stop Lamp Switch
Controlled/Monitored Subsystem and Transmission References
Fuel Controls - EVAP and Device Controls
G302
Figure 2:

Gas - JL4


Object Number: 1580803  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (With Throttle Actuator Control)
Control Module References
Diesel
Gas - w/o JL4
B+ Bus - Underhood Fuse Block - Gas
BTSI, BTSI BCK/UP, ECM/TCM/GLOW PLUG CNTRL MDL IGN 1, FUEL HTR, O2 SNSR A, O2 SNSR B, PCM IGN 1, SPARE and TRLR BCK/UP Fuses
BTSI, BTSI BCK/UP, ECM/TCM/GLOW PLUG CNTRL MDL IGN 1, FUEL HTR, O2 SNSR A, O2 SNSR B, PCM IGN 1, SPARE and TRLR BCK/UP Fuses
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
AIRBAG, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
AIRBAG, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
Power, Ground, DLC, and Splice Pack SP200
DRV PWR TRN MIR, PASS TRN MIR and STOP/CHMSL Fuses
Stop Lamp Switch
Stop Lamp Switch
G102
Figure 3:

Diesel


Object Number: 1580804  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (6.6L)
Control Module References
Gas - JL4
B+ Bus - Underhood Fuse Block - Diesel
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
AIRBAG, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
AIRBAG, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
DRV PWR TRN MIR, PASS TRN MIR and STOP/CHMSL Fuses
Stop Lamp Switch
Stop Lamp Switch
Module Power, Ground, Serial Data, and Stop Lamp Switch
Wheel Speed Sensors and VSS (w/o JL4)
Power, Ground, Serial Data, Indicator, and Stop Lamp Switch (w/o JL4)
Power, Ground, DLC, and Splice Pack SP200