What Changed

GMC's full-sized trucks are all new for 2007. The Sierra is offered in regular, extended and crew cab configurations with 3 bed lengths. Two-wheel and four-wheel drive versions are offered across the line. A total of 8 different engines are offered, many with cylinder deactivation technology for increased fuel economy. Flexible fuel versions allow for ethanol running. A four-speed automatic transmission is retained in all models except the range-topping Sierra Denali. The front suspension is a new coil over shock design. Solid axles are retained in the rear. Five different suspension packages are offered for various duty requirements.

Comparison to Prior Model

2007 GMC Sierra Extended Cab 2007 GMC Sierra Classic 1500 Extended Cab
2007 GMC Sierra Extended Cab 2007 GMC Sierra Classic 1500 Extended Cab
Price Range ($) $21,465 - $27,330
Length (in) 230.2 230.2
Wheelbase (in) 143.5 143.5
Width (in) 79.9 78.5
Height (in) 73.9 71.2
Track (in) 68.1 65
Exterior Volume (cu. ft.) 670.4 616.5
Curb Weight (lbs.) 4797-5265 4617-5008
Legroom Total (in.)
Passenger Volume (cu. ft.)
Cargo Volume (cu. ft.)
Driven Wheels
  • RWD
  • 4WD
  • RWD
  • 4WD
Engines
  • 4.8l V8 (295-bhp)
  • 4.3l V6 (195-bhp)
  • 4.8l V8 (285-bhp)
  • 5.3l V8 (295-bhp)
Transmissions A4 A4
City MPG
Highway MPG
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