G 2500 3/4 Ton Van V8-6.5L DSL Turbo VIN F (1997)
Cruise Control Module: Description and Operation
Cruise Control Module
For diesel engine applications, the PCM takes the place of the cruise control module. The typical mode of operation is as follows:
^
The cruise ON/OFF switch must be in the ON position. When the SET button is activated, the PCM Stores the last vehicle speed input from the
VSSB into a memory location. The PCM then sends signals to the electronic throttle control system. The PCM controls the electronic throttle to
maintain the vehicle speed stored in memory. The electronic throttle is a servo system which sends position information to the PCM. The PCM
will increase or decrease throttle position depending on the load (going up or down a hill) to maintain vehicle speed. If the cruise ON/OFF switch
is switched off or the brake is applied, the PCM will turn off the cruise control system.
