The 2007 GMC Savana has a 4-speed automatic.
The 2007 GMC Yukon has a 4-speed automatic.
The 2007 GMC Canyon has a 5-speed manual.
The 2007 GMC Acadia has a 6-speed shiftable automatic.
The 2007 GMC Yukon-XL has a 4-speed automatic.
The 2007 GMC Sierra-3500HD has a 6-speed automatic.
The 2007 GMC Savana-Cargo has a 4-speed automatic.
The 2007 GMC Sierra-1500 has a 4-speed automatic.
It's worth about $13,000. See quotes at http://www.edmunds.com/gmc/sierra2500hd/2006/index.html
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The 2007 GMC Yukon runs on regular unleaded.
The 2007 GMC Canyon runs on regular unleaded.