Best Seller | 1984-1986, 1988-1999 GMC C1500 Oil Pump - Autopart Premium GMC C1500 Oil Pump. Brand: Autopart Premium. Fits Years: 1984, 1985, 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 84, 85, 86, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99. Engine Oil Pump -- Small Block Style Oil... more | | $46.95 FREE shipping go to store |