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 MANUALSCHEVROLET1997ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISCRUISE CONTROLTESTING AND INSPECTIONFUNCTIONAL CHECK
1997 Chevrolet Astro Van 2WD V6-4.3L VIN W
Functional Check
1997 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION 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). Depress "SET" push button and release. Cruise control must not engage.
3. Check Set Speed: Drive vehicle at steady speed of 89 km/h (55 mph). Depress "SET" push button completely and release. Cruise control should engage at approximately 89 km/h (55 mph).
4. Check Brake Release: Depress brake pedal. The cruise control must release throttle, allowing the vehicle speed to drop. The system must not engage again when the brake is released.
5. Check 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 Coast Feature: Depress the "SET push button and hold. Allow the vehicle speed to drop to 80 km/h (50 mph) and release push button. Cruise control should hold vehicle speed at approximately 80 km/h (50 mph).
7. Check Accelerate Feature: Slide the cruise switch to the "R/A" position and hold. Vehicle speed should begin to increase. Allow the speed to increase to 89 km/h (55 mph) and release switch. The cruise control should hold the vehicle at approximately 89 km/h (55 mph).
8. Check Off switch: Turn the multifunction lever cruise switch to the "OFF" position. This must disengage the cruise control 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). Depress "SET" push button and release. Cruise control must not engage.
3. Check Set Speed: Drive vehicle at steady speed of 89 km/h (55 mph). Depress "SET" push button completely and release. Cruise control should engage at approximately 89 km/h (55 mph).
4. Check Brake Release: Depress brake pedal. The cruise control must release throttle, allowing the vehicle speed to drop. The system must not engage again when the brake is released.
5. Check 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 Coast Feature: Depress the "SET push button and hold. Allow the vehicle speed to drop to 80 km/h (50 mph) and release push button. Cruise control should hold vehicle speed at approximately 80 km/h (50 mph).
7. Check Accelerate Feature: Slide the cruise switch to the "R/A" position and hold. Vehicle speed should begin to increase. Allow the speed to increase to 89 km/h (55 mph) and release switch. The cruise control should hold the vehicle at approximately 89 km/h (55 mph).
8. Check Off switch: Turn the multifunction lever cruise switch to the "OFF" position. This must disengage 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.