307.266.6295 (phone) | 800.834.6295 (toll free) | 307.265.0707 (fax)

Mack Trucks


CMI-TECO was founded in 1978 by two partners who sought out the opportunity in servicing the mining and oil field production in Wyoming. By providing professional service, excellent reliability and customer relationships; CMI-TECO’s reputation is second to none.

In Wyoming, business is formed on building solid relationships which agreements are often made with a handshake. Reputation is built stronger with word-of-mouth than any other form business, which is why CMI-TECO strives on perfection the first time. With many small customers with large demands, CMI-TECO understands the importance of making a commitment that will last a lifetime.

CMI (Casper Manufacturing Inc.) was originally forged from the foundation of service, which led to the resources of more technicians and parts. This path led to the Mack Trucks dealer which was brought on in 1985. With the demand for high customer satisfaction and reliability, CMI grew with the purchase of TECO (Truck Equipment Company) in 1990 and became CMI-TECO. In 1995 CMI-TECO gave up the Mack Truck line for Western Star. However, with the demand for larger dealerships and market share, CMI-TECO once again took back the Mack Truck line and gave back the Western Star Trucks in 1999. For the last eight years CMI-TECO has formed unique and solid relationships equal to model of Mack Trucks.

When you choose to partner up with CMI-TECO, you’ll know you’re in great hands from our: Outside Parts/Sales Staff, Inside Sales Staff, and Service Technicians all committing to the growth and maintenance of your investment. With the investments in our team and long term commitment to a family owned and operated business, we strive in providing the very best customer service.

With over 30 years of experience CMI-TECO is family owned and is now going on to the second generation of “Selling Service”. Doing business in Wyoming is more than getting the job done; it is getting it done right the first time by going above and beyond the task at hand.