Used 2007 GMC Sierra 2500HD Extended Cab for Sale

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2007 Sierra 2500HD Reviews & Specs

Consumer Reviews for the GMC Sierra 2500HD

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4.2 8 Reviews

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My first diesel

cdietz, 06/07/2008

2007 GMC Sierra 2500HD SLE2 4dr Extended Cab SB (6.0L 8cyl 6A)

I never had a diesel before but my prior experience with gas trucks was tainted with getting 13-15 mpg. So I opted for the diesel with the allison. Wow. I get 19mpg average and on highway trips I average 21.5. I put about 31000 on it so far in 10 months of ownership and I have no complaints. The true genius of this whole setup is the transmission. In tow/haul mode it downshifts for you …

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Used 2007 GMC Sierra 2500HD Extended Cab for Sale

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My first diesel

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