V 3500 P/U 4WD V8-350 5.7L VIN M 4-bbl (1987)
Service Port HVAC: Locations
HVAC Component View
The high pressure fitting is located either in the high pressure vapor line or muffler, while the low pressure fitting is located on the accumulator.
Service Port HVAC: Locations
HVAC Component View
The high pressure fitting is located either in the high pressure vapor line or muffler, while the low pressure fitting is located on the accumulator.