4D Extended Cab, 3.5L I5 MFI DOHC, and 4WD. Talk about tough! Must go! This durable 2006 GMC Canyon, hauls tons of stuff, runs great and will go where you want to go! It is what it is! Its an amazingly fuel efficient GMC. No longer will you break the bank when you pull up to the gas pump. The Canyon scored the top rating in the IIHS frontal offset test.