In its final year of production, the Sierra 1500 is a full-size pick up truck that is offered in regular, extended and crew cab configuration. Trim levels are the base WT (work truck), SLE, and SLT and available in either two or four-wheel-drive. You also have a choice of bed length, with 5.8', 6.6' or 8', for those who need to carry a 4X8 sheet of wood. The base engine is the 4.3Liter V6 (195HP) with a manual transmission on the WT, with the 4.8Liter V8 that produces 295HP on the SLE and SLT. There is also an optional 5.3Liter (315HP) V8 and the aluminum head version that increases the horsepower to 335. There is also a 6.0Liter V8 that puts out 367HP. All models are offered in both two-and four-wheel-drive.