Vortec 5.3L V8 SFI VVT FlexFuel 6-Speed Automatic and 4WD. Extended Cab! Classy White! Tired of the same ho-hum drive? Well change up things with this terrific 2011 GMC Sierra 1500. Designated by Consumer Guide as a 2011 Recommended Large Pickup. This Sierra SLT is 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.