SLT trim. Heated Leather Seats, Navigation, Aluminum Wheels, Dual Zone A/C, Onboard Communications System, Satellite Radio, 4x4. READ MORE!KEY FEATURES INCLUDELeather Seats, 4x4, Heated Driver Seat, Premium Sound System, Satellite Radio, Onboard Communications System, Aluminum Wheels, Dual Zone A/C, Heated Seats, Heated Leather Seats GMC SLT with Steel Gray Metallic exterior and Ebony interior features a 8 Cylinder Engine with 353 HP at 5400 RPM*.OPTION PACKAGESAUDIO SYSTEM WITH NAVIGATION, AM/FM STEREO WITH MP3 COMPATIBLE CD PLAYER AND MULTIMEDIA NAVIGATION with voice prompts, seek-and-scan, digital clock, auto-tone control, Radio Data System (RDS), speed-compensated volume and TheftLock (Not available with (PCU) Entertainment Package. Not available to Puerto Rico or the Virgin Islands. Orders with a ship to code of Hawaii will have State of Hawaii functionality only.), DIFFERENTIAL, HEAVY-DUTY AUTOMATIC LOCKING REAR (Included with (PDL) Z71 Off-Road Package), TRAILERING EQUIPMENT, HEAVY-DUTY includes trailering hitch platform and 2.5-inch receiver with 2 adapter, 7-wire harness (harness includes wires for: park lamps, backup lamps, right turn, left turn, electric brake lead, battery and ground) with independent fused trailering circuits mated to a 7-way sealed connector, wiring harness for after-market trailer brake controller (located in the instrument panel harness), and single wire for center high-mounted stop lamp, UNIVERSAL HOME REMOTE, ENGINE, VORTEC 6.0L VARIABLE VALVE TIMING V8 SFI (353 hp [262.8 kW] @ 5400 rpm, 373 lb-ft of torque [505.6 N-m] @ 4400 rpm) (STD), TRANSMISSION, 6-SPEED AUTOMATIC, HEAVY-DUTY, ELECTRONICALLY CONTROLLED with overdrive and tow/haul mode (STD). Privacy Glass, Keyless Entry, Steering Wheel Controls, Heated Mirrors, Bucket Seats.EXPERTS REPORTEdmunds.coms review says The GMC Sierra HD raised the bar in ride quality and refinement when redesigned for the 2007 model year..Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.