Direct Replacement
For Chevy:
For 1987-1991 Chevy Blazer; For 1981-1986 Chevy C10/ C20/ C30/ K10 / K20/ K30 /K5 Blazer; For 1987 Chevy R1500 Truck; For 1987-1988 Chevy R20/ R30/ V30; For 1989 Chevy R2500 Truck; For 1989-1991 Chevy R3500 Truck; For 1981-1986 Chevy Suburban C10 / C20/ K10 / K20; For 1987-1988 Chevy Suburban R10/ R20/ V10/ V20; For 1989-1991 Chevy Suburban R1500/ R2500/ V1500/ V2500; For 1987 Chevy V1500 Truck; For 1987-1989 Chevy V2500 Truck; For 1989-1991 Chevy V3500 Truck.
For GMC:
For 1981-1986 GMC C2500 Truck/ C1500 Truck/ C3500 Truck; For 1981-1991 GMC Jimmy; For 1981-1986 GMC K1500 Truck/ K2500 Truck/ K3500 Truck; For 1987 GMC R1500 Truck/ V1500 Truck; For 1987-1989 GMC R2500 Truck; For 1987-1991 GMC R3500 Truck/ V3500 Truck; For 1981-1986 GMC Suburban C1500/ C2500/ K1500/ K2500; For 1987-1991 GMC Suburban R1500/ R2500/ V1500/ V2500; For 1987-1989 GMC V2500 Truck.