We are proud to announce there are more options on the popular GM 6L80 transmission option that we offer here at JH Mountain Auto Services in Silverthorne 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:

2010 Cadillac CTS-V

Chevrolet/GMC

2010 Camaro (6.2L)

2012 Silverado, Sierra, Suburban, Yukon (6.0L, 4WD)

2013 Silverado, Sierra, Suburban, Yukon (6.0L, 4WD)

2014-2015 Silverado, Sierra, Suburban, Yukon (5.3L, 4WD)

2014-2016 Silverado/Sierra 1500 (4.3L)

2015 Express, Savanna, Silverado, Sierra, Yukon (6.0L, 4WD)

2015-2016 Express, Savanna, Silverado, Sierra, Yukon (6.0L, 2WD)

2016 Silverado 3500 (6.0L, 2WD)

2016 Silverado 3500 6.0L, 4WD)

The transmission control modules of this unit are hydraulically, and electronically, tested on a stand-alone system, then tested again on a dynamometer using a state-of-the-art CAN software package.  The 6L80 transmission is covered by a transferable, 3-Year/100,000-mile warranty, for both parts and labor, available nationwide.   At JH Mountain Auto Services in Silverthorne our technicians can get you the information you need to make an informed decision on the JASPER transmission replacement option that is right for you.  We look forward to working with you.

We serve the I-70 Corridor from Denver to Vail, including Idaho Springs, Georgetown, Silverplume, Loveland Ski Basin, Dillon, Keystone, Breckenridge, Silverthorne, Copper Mountain, and Vail.
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JH Mountain Auto Services

205 Warren Ave
Silverthorne, CO 80498
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location small (970) 513-0706
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Weekdays:   9:00 AM - 5:00 PM
Weekends: Saturday | Sunday By Appointment

CLOSED November 28th, November 29th, November 30th

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