1979 GMC C3500 equipped with 7.4L V8 Gas OHV, 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
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Switch Air Conditioning Pressure Cycling
1979 GMC C3500 equipped with 7.4L V8 Gas OHV, 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
Switch Air Conditioning Pressure Cycling