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

4.3L


Object Number: 1548266  Size: FS
Master Electrical Component List
Cruise Control Description and Operation 4.3L
Control Module References
4.8L, 5.3L 6.0L, and 8.1L
Ignition Switch - START, RUN, and ACC/RUN/START Bus Bars and IGN A and CRANK Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
Power, Ground, DLC and Splice Pack SP 205
Power, Ground, Serial Data, Indicator and Stop Lamp Switch - Over 8600 GVW or Rear Drum Brakes
Stop Lamps - GMC
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
G203 - 1 of 2
Figure 2:

4.8, 5.3, 6.0, and 8.1L


Object Number: 1548268  Size: FS
Master Electrical Component List
Cruise Control Description and Operation 4.8L, 5.3L, 6.0L, and 8.1L
Control Module References
Diesel
4.3L
Power, Ground, DLC and Splice Pack SP 205
Power, Ground, Serial Data, Indicator and Stop Lamp Switch - Over 8600 GVW or Rear Drum Brakes
Power, Ground, Serial Data, Indicator and Stop Lamp Switch - 8600 GVW or Less w/Rear Disc Brakes
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
Stop Lamps - GMC
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
Ignition Switch - START, RUN, and ACC/RUN/START Bus Bars and IGN A and CRANK Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
Power Takeoff
Figure 3:

Diesel


Object Number: 1548269  Size: FS
Master Electrical Component List
Cruise Control Description and Operation 6.6L
Control Module References
4.8L, 5.3L 6.0L, and 8.1L
Power, Ground, DLC and Splice Pack SP 205
Gages, Vehicle Speed Signal, Engine Oil Pressure, and Fuel Level Sensors
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
Power, Ground, Serial Data, Indicator and Stop Lamp Switch - Over 8600 GVW or Rear Drum Brakes
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
Stop Lamps - GMC
Ignition Switch - START, RUN, and ACC/RUN/START Bus Bars and IGN A and CRANK Fuses
4WD, BRAKE, CRUISE, HTR/AC, HVAC 1, and IGN 3 Fuses
Power Takeoff