(720) 378-7888  

Friendly, honest people. Took good care of my truck. - Edwin S. (5 star review on Google)

Happy Flag Day, from your favorite mechanics at Carbon Valley Garage in Longmont!

Andrew and the crew at Carbon Valley Garage are great at fixing cars. I have had them work on several of my cars and they have been able to diagnose and fix problems other haven't. Very professional & easy to work with and the workmanship is phenomenal. - Brian R. (5 star review on Google)

We are proud to announce there are more options on the popular GM 6L80 transmission option that we offer here at Carbon Valley Garage in Longmont through our partner JASPER Engines & Transmissions.  Since its release in 2011, the JASPER re-manufactured GM 6L80 has been a popular transmission for replacement and performance enhancement purposes.  Now, the lineup of compatible engine replacement vehicles has been greatly expanded, to include a much larger list of applications. The GM 6L80 is currently available for these additional vehicles:

These guys are awesome. Very professional. - Jeremiah S. (5 star review on Google)

Andrew and his crew, particularly Chad Brenna did a fantastic 5.3 ltr to 6.2 ltr swap on my 2007 Chevy. Avalanche . Difficult and very detail oriented job done to perfection ! Highly recommend them no matter the job. - Jack D. (5 star review on Google)

This is a clutch gone completely WRONG and something you want to be very sure doesn't happen with your vehicle!  VERY SURE! 

So how do you ensure you are not having an issue with your clutch when most drivers simply get in and drive?  What do you look for?  That is a question many of our customers ask us here at Carbon Valley Garage in Longmont and one this driver did not.

I started binging my car back when it was Hometown Garage, however when Andrew took over the business, he was able to make it the very dependable, and trusting shop that everyone aspires to do business with! The customer service is unparalleled, and the repairs are fairly priced and DONE RIGHT the first time. Major work was done on the engine in my LS-2 powered 2006 GTO, and it has performed FLAWLESSLY! His many years of muscle/classic car restoration experience stated on the biography on the home page shows, and even though most of their repairs are fleet-oriented, they are also performance specialists, so bottom line, I would not trust anybody else working with my LS-2. Any LS-powered car belongs in this shop like Corvettes, Camaros and the likes. If I had a classic GTO, this would also be the place to bring it to. I live in Denver, but I would not let anyone else touch my car, since every repair was done properly and timely, never having to come back. I would STRONGLY recommend this shop! Motor heads....this should be your new go-to place! - Mario F. (5 star review on Google)

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Carbon Valley Garage

13730 Deere Court
Longmont, CO 80504
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location small (720) 378-7888
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SHOP HOURS

Weekdays:   8:00 AM - 5:30 PM
Weekends: Closed

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