Colorado Transmission & Diesel Specialists

I can’t express how satisfied I am with the attitude, helpfulness, honesty and friendless I experienced dealing with Peter. The clutch had gone out and he gave me a quote for the replacement of it and explained in detail what needed to be done. I was a mechanic in the 70’s and 80’s and fully understood what he was talking about. The cost was reasonable and was exactly what he quoted. He completed the repairs earlier than he had promised. He made me feel welcome and was to the point. He treated me like a good friend and not just another customer. I had used them about 20 years ago to rebuild the automatic transmission in my Chevy pickup and had the exact same experience then. Thank you Peter.

Doug runs this place in tip top shape. Very honest and knowledgeable crew. Stand behind their work. My dad has been going there for anything he ends up needing for 7 years. Now im driving from the springs to drop my vehicles off if I need anything. Hard to find reliable mechanics nowadays. Glad my dad introduced me to them. Shoutout to Joey as well. Appreciate the good work.

Doug and his Colorado Transmission & Diesel Specialists team has some of the best auto repair mechanics in Fort Lupton and really all of north Denver Metro Colorado for that matter. My 2500 dodge ram high top conversion van would not go in reverse all the time. At all the other auto repair shops thy all said our vehicle needed a new transmission replacement $$$. The automotive repair techs at CTDS did diagnostic testing and found out we just needed a wire harness near the torque converter replaced. If I had listened to other shops it would have cost thousands to replace the tranny. With the savings, I decided to repair the wiring, get oil change, engine tuneup, and all around brake job it needed. Having over 235k on my van I knew eventually would need a new transmission install with it

Peter and the crew were very professional, they fixed my car and got me back on the road at a great price! Thanks!1

Thoroughly pleased with their work. Easy to communicate with, got my transmission changed in just a couple days and honest price. Highly recommend!!