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 MANUALSCHEVROLET1995ASTRO VAN CARGO, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEREMOVE, OVERHAUL & INSTALLENGINE CONTROLS - REMOVE/INSTALL/OVERHAUL - 4.3LIGNITION SYSTEMDISTRIBUTOR (HVI - HIGH VALUE IGNITION SYSTEM)NOTES
1995 Chevrolet Astro Van Cargo, RWD
Distributor (HVI - High Value Ignition System): Notes
1995 Chevrolet Astro Van Cargo, RWDSECTION Notes
The M/L model vehicles equipped with 4.3L (VIN W) engine use the HVI system. The "distributor" is called the High Voltage Switch (HVS). System is also referred to as the HVI/HVS system. The HVS includes a camshaft position sensor.
CAUTION:
HVS ("distributor") is installed in a fixed, nonadjustable position. Base timing is computer controlled and cannot be adjusted by rotating HVS. Attempting to do so may result in crossfire and misfire conditions. If HVS is installed incorrectly a DTC 1345 may be set.
RENDER: 1.0x
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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.