1980 GMC C2500 equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
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without A/C, with HD Heater, 4 Terminal
1980 GMC C2500 equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
without A/C, with HD Heater, 4 Terminal