Reviews for Diesel Performance

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Sep 2025
We were on a cross country trip in our motorhome from California, destination Bar Harbor, Maine, stopping in Grand Junction, Co to visit our Firefighter Grandson. We encountered major rear airbag issues just out of Las Vegas, Nevada. Was able to continue to Grand Junction where our Grandson referred us to Diesel Performance. Contacted Diesel Performance for an appointment ASAP and spoke to Ryan, service manager. Being a Holiday weekend (Labor Day), he was able to work our coach in early a.m. following the holiday.
Ryan and his team successfully identified and corrected our problem that very same day! The friendly reception, outstanding performance and quality work...read full review
Aug 2025
Ryan and his crew are trustworthy, reliable, and efficient in their repairs and communications. We had a fuel line leak on our Fire Engine that needed repair, Ryan got us in same day and fixed what we believed to be the issue. A couple days proved that there was further issue and Ryan wasted no time getting us in, trouble shooting, and repairing the actual source.

Thank you, Diesel Performance!
Jul 2025
Our RV broke down on our way from Ohio across the country . We had a major radiator problem outside of Grand Junction. We called, spoke to Ryan and he let us know they could look at it that day although the work may not be able to take place for the next couple of days, but bring it on in. We were greeted by the owner Corey, who personally came out and started to diagnose the problem. After determining what they needed to do , they gave us pricing and time frames of completion. They listened and understood our dilemma , kept good contact and got us back on the road. Great shop, great owner , great mechanics and a great scheduler, Ryan.
Thank you guys!!! It means...read full review

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From Diesel Performance

Heavy-Duty Truck and Medium-Duty Truck Repair and Maintenance Services OTR Truck Repair and Maintenance and Fleet Truck Repair and Maintenance. Heavy-Duty Equipment Repair. Heavy Duty Tandem Axle-Chassis Dyno, Engine Dyno, Transmission Test Stand, and Electronic Diagnostic Equipment. Conveniently located in Grand Junction, Colorado, we’re the largest independent Heavy-Duty Truck Repair and Maintenance Services facility between Denver and Salt Lake City and field 5 fully equipped mobile service trucks.