The Sierra 1500HD Classic is the older 2006 model full-size truck carried over into 2007 and renamed 'Classic' to distinguish it from the fully redesigned Sierra. The 1500HD Classic is a half-ton full-size truck. As a regular cab model it can seat up to three passengers. Extended cab models can carry up to six passengers. It is powered by a 300 hp 6.0-liter V-8 engine. There is a choice between a five-speed manual and a four-speed automatic. The GMC Sierra 1500HD Classic is a carryover from 2006.
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|MPG||City / Hwy|
|Transmission||4-spd auto w/OD|
|Power||300 @ 4400 rpm|
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