Vortec 4.8L V8 SFI, 4-Speed Automatic with Overdrive, 4WD, ABS brakes, Black Power-Adjust Heated Outside Mirrors, Electronic Stability Control, Emergency communication system, Heated door mirrors, Low tire pressure warning, and Remote keyless entry. Have Peace of Mind !! All pre-owned vehicles under 120,000 miles include a 3 month 3,000 mile. This 2007 Sierra 1500 is for GMC enthusiasts looking the world over for a great one-owner gem. This Sierra SLE1 is still a pretty special truck, showing off the superior ride and handling that have earned it accolades from pretty much every reviewer who got behind the wheel. The drivability is good enough to be a capable commuting vehicle for someone who wants a pickup on the weekend for hauling toys or projects. It scored the top rating in the IIHS frontal offset test.