S10/T10 P/U 2WD V6-4.3L VIN W (1997)
Cruise Control Switch: Description and Operation
Release Switches
General Information
Either one or two electrical release switches is employed in the cruise control system. One of the switches mounts to the brake pedal, and also functions
as the stop lamp switch. On vehicles equipped with manual transmissions, a second switch is used in addition to the brake switch. The switch is mounted
to the clutch master cylinder push rod, and also functions as the clutch start switch. When either the brake or clutch pedal is depressed, the release switch
cuts off the voltage supplied to the cruise control circuit in the PCM/VCM. The engagement switch must be energized to return the cruise control to
operation.
Vehicle Speed Sensor Calibrator
The vehicle speed sensor (VSS) calibrator receives a signal from the VSS indicating the speed of the vehicle. This signal is then processed by the VSS
calibrator and supplied to the powertrain control module (PCM) (2.2 liter engine) or vehicle control module (VCM) (4.3 liter engine), cruise control
module, and the speedometer.
