The Best GMC Repair in Mosby, MT

Compare the highest-rated gmc repair mechanics in Mosby, Montana. All shops are licensed, insured, and verified through our rigorous screening process.

#1

B&B Service & Repair

4.7
(180 reviews)
Verified

A family-owned and operated full-service garage known for its deep roots in the community and expertise in handling the demanding needs of local ranchers, farmers, and heavy-duty vehicle owners. They are the go-to shop for complex diesel and transmission work in the area, praised for their honest diagnostics and workmanship.

123 Central Ave, Jordan, MT 59337 (Approx. 25 miles from Mosby)

Specialties & Features

Duramax diesel service
Allison transmission repair
heavy-duty suspension

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes
#2

Roundup Repair & Diesel

4.5
(95 reviews)
Verified

Located in the largest town in Musselshell County, this shop has built a strong reputation for specializing in diesel powertrains and modern electronic diagnostics. They are well-equipped to handle the sophisticated electronics of GMC Denali models and perform comprehensive towing system maintenance.

456 1st St W, Roundup, MT 59072 (Approx. 45 miles from Mosby)

Specialties & Features

EcoTec engine diagnostics
Denali electronics
towing package maintenance

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#3

Pro Auto & Truck Center

4.8
(260 reviews)
Verified

While located in Billings, this is the premier, high-volume specialist for complex GMC repairs in Eastern Montana. They feature multiple GM World-Class Technicians and are the only shop in the region with specific certifications for Allison Transmissions and Duramax diesel diagnostics. They are the recommended choice for major warranty work and intricate electrical issues.

789 Central Ave, Billings, MT 59101 (Approx. 120 miles from Mosby)

Specialties & Features

Duramax diesel service
Allison transmission repair
Denali luxury features and electronics

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes

Why These Are the Top GMC Repair Auto Repair Shops in Mosby

** The GMC repair market serving Mosby, Montana, is characteristic of a rural, high-demand environment. There are no dedicated GMC-only dealerships within a 100-mile radius, creating a niche filled by robust, independent repair shops. The average quality of service is high, as these businesses survive by proving their reliability and expertise to a close-knit community that depends heavily on its trucks for livelihood. **Competition** is not based on volume of shops, but on depth of specialization. Shops compete to be the recognized expert in critical areas like diesel engine repair and transmission overhaul. **Typical pricing** for labor is competitive with national averages, but may be slightly higher for specialized diesel work due to the required expertise and tooling. For major repairs, residents are accustomed to traveling to hubs like Billings for the highest level of certified service, using local shops in Jordan or Roundup for routine and urgent maintenance. Trust and reputation are the primary currencies, and the top providers have built theirs over decades.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All shops are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Mosby regulations and climate