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 MANUALSCHEVROLET1996G 30 VAN V8-5.7L VIN RREPAIR AND DIAGNOSISCRUISE CONTROLTESTING AND INSPECTIONFUNCTIONAL CHECK
1996 Chevrolet G 30 Van V8-5.7L VIN R
Functional Check
1996 Chevrolet G 30 Van V8-5.7L VIN RSECTION Functional Check
Use this procedure to check the operating modes of the cruise control system. Always use this procedure after repair work has been completed on the cruise system.
1. Slide the turn signal lever cruise switch to the ON position.
2. CHECK the LOW SPEED INHIBIT: Drive the vehicle at 32 km/h (20 mph). Press SET button and release. Cruise control must not engage.
3. CHECK the SET SPEED: Drive the vehicle at a steady speed of 89 km/h (55 mph). Depress the SET button completely and release. Cruise control should engage at approximately 89 km/h (55 mph).
4. CHECK the BRAKE RELEASE: Press the brake pedal. The cruise control must release the throttle, allowing the vehicle speed to drop. The system must not reengage when the brake is released.
5. CHECK the RESUME FEATURE: With the vehicle speed at approximately 72 km/h (45 mph), slide the cruise switch momentarily (less than 1 second) to the R/A position. The vehicle should accelerate to approximately 89 km/h (55 mph).
6. CHECK the COAST FEATURE: Press the SET button and hold. Allow the vehicle speed to drop to 80 km/h (50 mph) and release the button. The cruise control should hold vehicle speed at approximately 80 km/h (50 mph).
7. CHECK the ACCELERATE FEATURE: Slide the R/A switch to the right and hold. The vehicle speed should begin to increase. Allow the speed to increase to 89 km/h (55 mph) and release the switch. The cruise control should hold the "vehicle at approximately 89 km/h (55 mph).
8. CHECK the OFF SWITCH: Turn the turn signal lever cruise switch to the OFF position. This must disengage the cruise control system.
If preliminary inspection reveals no solution please refer to Powertrain Management/Computers and Control Systems/Testing and Inspection/ Testing and Inspection
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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.