Both part-time and full-time automatic all-wheel drive are offered in the 2008 GMC Sierra 1500 SLE-1 4WD, combined with a rear locking and center limited slip differential. The low-range gearing and 9 inches of ground clearance help in off-road situations, and an optional Z71 suspension with stronger shocks and skid plates add more stability. Engine choices include the standard 4.8-liter, 295-hp single overhead cam V8, with 305 ft-lbs of torque at 4800 RPM or a 5.3-liter, 315-hp V8 with Active Fuel Management. A 4-speed automatic is the only transmission.
The two-door, two-seater SLE-1 comes with a 6.6-foot pickup bed with tiedowns. 17-inch wheels, ABS brakes, OnStar, and dual front airbags are all standard, with the option to add side head airbags. Full power features include remote entry, wheel-mounted cruise control, and a CD/MP3 player with satellite radio. Leather trim adds a classy touch. A 6-CD changer, universal remote, remote start, and heavy duty trailer wiring for up to 8900 pounds of towing power are some of the options.
