Not sure which 2005 GMC Canyon Bed Caps are right for you? We have over 300 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Charles A B from Castaic, CA said, "The EGR Side Rail Caps and Tailgate Cap look good and were installed with realitive ease. Checking prices and the Caps appear to be within the average of other manufaturers. The Side Rail Caps although stated to be designed for the 2005 GMC Canyon/ Chevy Colorado Crew Cab, it is labelled as fitting the 2004+ models. The Side Rail Caps are approximately 3/8th of an inch wider than the actual Truck's Side Rail. So the quality of materials appears average but the dimensions are wrong."