1991 GMC C2500 equipped with 7.4L V8 Gas OHV, 6.2L V8 Diesel OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.3L V6 Gas OHV
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AC MANUAL CONTROLS(C60) RELEASED FOR R134A RETROFIT VPI 1-877-846-8243
1991 GMC C2500 equipped with 7.4L V8 Gas OHV, 6.2L V8 Diesel OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.3L V6 Gas OHV
AC MANUAL CONTROLS(C60) RELEASED FOR R134A RETROFIT VPI 1-877-846-8243