2006 GMC Sierra 2500HD Values
Select a 2006 GMC Sierra 2500HD trim level
A carry-over from 2005, the Sierra 2500HD is offered in Regular, Extended or Crew Cab configuration, available in either two or four-wheel-drive. You can also choose from the standard box or the long bed in either work truck or the SLE1, SLE2 or SLT trim levels. The base engine is a 6.0-liter Vortec V8 that produces 335 horsepower linked to a six-speed automatic transmission. There is also a 6.6-liter Turbo-Diesel V8 that produces 300 horsepower and 520 lb-ft of torque (which comes standard with a six-speed automatic transmission or the optional six-speed manual).