Friendly, honest people. Took good care of my truck. - Edwin S. (5 star review on Google)
At Carbon Valley Garage in Longmont we like to stay on top of our JASPER news. JASPER just released a GM 5.3L engine with a DOD/AFM deleted option (not available in California), and an available DiabloSport i3 programmer.
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)
Since its release in 2011, the JASPER GM 6L80 has been a popular transmission for replacement and performance enhancement purposes.