285.0-hp, 5.3-liter, 8 Cylinder Engine (Flex Fuel Capability) Wondering which trim is right for you? Our 2003 Chevrolet Suburban trim comparison will help you decide.
The original Chevrolet ... Suburban was available with new 5.3- and 6.0-liter V-8 engines. Later, the brawny Suburban 2500 could be ordered with an 8.1-liter “big-block” V-8. Starting in 2003 ...