There are no better auto/diesel repair facilities in Colorado than Keller's Pro Auto and Diesel in Parker! None, na da, end of discussion! I have been a Keller's/Parker for over 16 years. Now that I am traveling as a full time rv'er, I try to scedule my trips around servicing my truck at Keller's. While in Denver this week my truck developed some problems. I had it scheduled for service already, but without my truck I could not pull my fifth wheel. I dropped off my truck on Sunday and checked back on Tuesday. Jim rotated my truck in, loaned me a vehicle so I could turn in my rental car, and kept me informed. As it turned out, there was not a MAJOR issue, as we first thought. Jim had my truck ready for me on Wenesday morning (they even washed it) and I was able to continue on my way. I shudder to think of what I may have been "sold" anywhere else on my travels. I love the honesty, integrety, high quality of work, and best of all being treated like family on every visit. Keep up the great work guys! I VERY HIGHLY recommend Keller'/Parker for all of your automotive needs!