The 2007 GMC Canyon is available as a 2-door, 3-seat regular side. Starting at $17,895, the 2007 GMC Canyon SL 4x4 Regular Cab is powered by a 2.9L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 18-mpg in the city and 24-mpg on the highway. The top of the line 2007GMCCanyonWork Truck 4x2 Extended Cab , priced at $ 16,310 , is powered by a 2.9L , 4 - cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 26-mpg on the highway.