Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISCRUISE CONTROLDESCRIPTION AND OPERATIONSYSTEM DESCRIPTIONBRAKE RELEASE SWITCHCRUISE CONTROL MODULE
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Cruise Control Module
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Cruise Control Module
The cruise control module on gasoline engines maintains a desired vehicle speed under normal driving conditions. The typical cruise control system operates in the following way:
^ The cruise ON/OFF switch must be in the ON position.
^ When the SET button is activated, the cruise control module stores the last vehicle speed input from the VCM into memory.
^ The stepper motor, pan of the cruise control module, increases or decreases throttle position depending on the load (going up or down a hill) in order to maintain vehicle speed.
^ When the cruise ON/OFF switch is moved to the OFF position, or if the brake is applied, the cruise control module turns off the cruise control system.
^ The cruise ON/OFF switch must be in the ON position.
^ When the SET button is activated, the cruise control module stores the last vehicle speed input from the VCM into memory.
^ The stepper motor, pan of the cruise control module, increases or decreases throttle position depending on the load (going up or down a hill) in order to maintain vehicle speed.
^ When the cruise ON/OFF switch is moved to the OFF position, or if the brake is applied, the cruise control module turns off the cruise control system.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.