CHEVROLET C1500 BASE MODEL 1988-1991 CHEVROLET C1500 BASE MODEL 1990-1991 CHEVROLET C2500 BASE MODEL 1988-1991 CHEVROLET C2500 BASE MODEL 1989-1991 CHEVROLET C2500 BASE MODEL 1991 CHEVROLET C3500 BASE MODEL 1988-1989 CHEVROLET K1500 BASE MODEL 1988-1991 GMC C1500 BASE MODEL 1988 GMC C1500 SIERRA 1989-1991 GMC C1500 SIERRA XC 1989-1991 GMC C2500 BASE MODEL 1988 GMC C2500 SIERRA 1989-1991 GMC C2500 SIERRA 1991 GMC C2500 SIERRA XC 1989-1991 GMC C2500 SIERRA XC 1991 GMC C3500 BASE MODEL 1988 GMC C3500 SIERRA 1989-1990 GMC C3500 SIERRA XC 1989-1990 GMC K1500 BASE MODEL 1988 GMC K1500 SIERRA 1989-1991 GMC K1500 SIERRA XC 1989-1991