Distributor (HVI - High Value Ignition System): Notes

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 1995 GMC Vandura, 1995 GMC Sonoma, 1995 GMC Safari, 1995 GMC Rally, and 1995 GMC Pickup. However, it is still accessible from the selected car via links, so may be relevant.

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.