Gas and Diesel Garage is your premier shop for everything gas and diesel located in Longmont Colorado. We are ASE Master Tech Certified and have over 50 years combined experience.
We have an extensive background on vehicles from Chevrolet, GMC, Dodge, Ford, Jeep, Chrysler, and other makes and models. If you don’t see what you’re looking for please give us a call and ask! We also have an in house 47RH, 47RE, and 48RE transmission specialist for your Cummins transmissions needs as well. With our Cummins transmission knowledge we have extensive knowledge on the Cummins engine as well. Take a look at our photo album for past and recent projects we have done!

Route for getting through facility
Located inside the south end of the historical Great Western Sugar Mill Factory off of Hwy 119. When pulling up make sure you are at the North Gate (has signage on gate saying North Gate), once entered in drive straight through and then take a left in the lot (head toward end of big gray tin building) and then at the end of the building by the garage door with the massive suspended funnel located next to it is our entrance.