About Us


Our Mission : To maximize transmission performance through an ethical and professional process                               in the shortest amount of time. 

Our team is committed and constantly updating certifications provided by ATRA and other organizations that support our knowledge and qualify us to work on your automobile.

As part of our values Colorado Transmission LLC. are happy to contribute with Mother Nature by using environmental safe cleaners and different types of services to recycle and dispose liquids, solids and toxic elements to the environment.

Colorado Transmission LLC. is committed to provide quality service. We are a family-owned business delivering honest and professional transmission services repair to the Longmont community and surrounding areas, since 2009 now operating under different name. It is a pleasure to serve the Greeley community and surrounding areas. Our qualified technicians are ready and equipped to employ knowledge, experience and latest automotive technology to handle major or minor transmission and diesel services.

At Colorado Transmission LLC. we understand that your vehicle is a major investment, and that is why we care for each customer’s vehicle as if it were our own.

Domestics Transmission, Foreign Transmission and European Transmission| No Hybrids| Up to one ton

Call us or visit us for more information, it will be a pleasure helping you.

Hablamos Español!

Ruben’s History

Ruben Ontiveros, the founder, has the passion and enthusiasm for automobiles. He decided to focus and specialize in transmissions. The first steps Ruben took for rebuilding transmissions were working for companies such as AAMCO Transmission and ATS.

Ruben earned several certifications provided by AAMCO Transmission and from the Automotive Transmission Rebuild Association (ATRA) that validates his knowledge. Today, Ruben has nineteen years in the automotive industry, is committed and continues to learn. The experience and knowledge Ruben has acquired during these years has allowed him to create his own and unique way of rebuilding and customizing automotive, gas and diesel transmissions.