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 MANUALSCHEVROLET1998ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISCRUISE CONTROLTESTING AND INSPECTION
1998 Chevrolet Astro Van 2WD V6-4.3L VIN W
Cruise Control: Testing and Inspection
1998 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Testing and Inspection
IMPORTANT: The Cruise Control Module receives a Vehicle Speed Signal from the Vehicle Control Module (VCM) and will inhibit Cruise Control Operation if the Vehicle speed is less than 25 mph.
1. CHECK condition of BRAKE, CRUISE, and STOP/HAZ Fuses If Fuse(s) is open, LOCATE and REPAIR source of overload. REPLACE Fuse(s).
^ CHECK for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove GOOD in a Continuity/Voltage check with a system disconnected. These Circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a Voltage drop with the system operational (under load).
^ CHECK for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (Refer to Troubleshooting Procedures). Diagnostic Aids
1. CHECK condition of BRAKE, CRUISE, and STOP/HAZ Fuses If Fuse(s) is open, LOCATE and REPAIR source of overload. REPLACE Fuse(s).
^ CHECK for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove GOOD in a Continuity/Voltage check with a system disconnected. These Circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a Voltage drop with the system operational (under load).
^ CHECK for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (Refer to Troubleshooting Procedures). Diagnostic Aids
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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.