(Please Independently Verify Compatibility with your specific vehicle) 1988 CHEVY TRUCK R+V 10,20,30 P/U,SUB V8-379 6.2L Dsl 1988 GMC TRUCK R+V 1500-3500 PU,SUB V8-379 6.2L Dsl 1988 GMC TRUCK JIMMY/YUKON FUL SIZE V8-379 6.2L Dsl 1989 CHEVY TRUCK R+V 10,20,30 P/U,SUB V8-379 6.2L Dsl 1989 GMC TRUCK R+V 1500-3500 PU,SUB V8-379 6.2L Dsl 1989 GMC TRUCK JIMMY/YUKON FUL SIZE V8-379 6.2L Dsl 1990 CHEVY TRUCK R+V 10,20,30 P/U,SUB V8-379 6.2L Dsl 1990 GMC TRUCK R+V 1500-3500 PU,SUB V8-379 6.2L Dsl 1991 CHEVY TRUCK R+V 10,20,30 P/U,SUB V8-379 6.2L Dsl 1991 Chevrolet TRUCK R+V 10,20,30 P/U,SUB V8-350 5.7L 1991 Chevrolet TRUCK R+V 10,20,30 P/U,SUB V8-454 7.4L 1991 Chevrolet TRUCK R+V 10,20,30 P/U,SUB V8-379 6.2L Dsl 1991 Chevrolet TRUCK BLAZER FULL SIZE V8-379 6.2L Dsl Any questions please feel free t