1999 GMC C2500 equipped with 7.4L V8 Gas OHV, 6.5L V8 Diesel OHV Turbo, 5.7L V8 Gas OHV, 5.7L V8 CNG OHV, 5.0L V8 Gas OHV
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MUST ALSO USE 1-12167112 RELAY
1999 GMC C2500 equipped with 7.4L V8 Gas OHV, 6.5L V8 Diesel OHV Turbo, 5.7L V8 Gas OHV, 5.7L V8 CNG OHV, 5.0L V8 Gas OHV
MUST ALSO USE 1-12167112 RELAY