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

Cruise Control Switch, Steering Wheel Controls


Object Number: 1619404  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (Conventional Cruise Control)
Control Module References
Distance Sensing Cruise Control Module - K59
GMLAN High Speed - Domestic w/ UE1
Cruise Control Schematic Icons
Figure 2:

Distance Sensing Cruise Control Module - K59


Object Number: 1619407  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (Adaptive Cruise Control)
Control Module References
Adaptive Cruise Steering Wheel Controls, DLC
Cruise Control Switch
Fuse Block Underhood Bussing
Fuse Block - Underhood Fuses/Relays: IPM/ALDL, Auto Headlamp Dimming, CCP, ECM/TCM, WPR MOD, WPR SW/VICS and Rain Sensor/HDLP Wash Fuses, Accessory Relay
GMLAN High Speed - Domestic w/ UE1, K59, F55
G104 (2 of 2)
Figure 3:

DLC, Brake Pedal Position Sensor


Object Number: 1619439  Size: FS
Master Electrical Component List
Cruise Control Description and Operation (Adaptive Cruise Control)
Control Module References
Distance Sensing Cruise Control Module - K59
GMLAN Low Speed (2 of 2)
GMLAN High Speed - Domestic w/ UE1
Electronic Throttle Controls
Engine Data Sensors - Electronic Throttle Controls