2000 Chevrolet Silverado 2500 LS 3dr Extended Cab SB
Gas milage is bad no matter what we
have tried to do. Computer chip, air
intake, dual exhaust, doesnt make a
difference. Still only get 13 miles a
gal. 8 miles a gal towing. Should have
bought the 454 it gets same mileage and
has more power.