The Best GMC Repair in Roy, MT

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

#1

Central Montana Service & Repair

4.7
(120 reviews)
Verified

A highly respected, family-owned shop known for its deep mechanical expertise, particularly with diesel engines and heavy-duty truck systems. They are the go-to provider in the immediate region for complex diagnostics and repairs that general mechanics may not handle. Their reputation for honest work and solving difficult problems is consistently praised.

122 Centennial Dr, Lewistown, MT 59457

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty suspension

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Lewistown Diesel & Auto

4.5
(85 reviews)
Verified

As the name implies, this shop focuses specifically on diesel powertrains and the trucks that use them. They have modern diagnostic equipment capable of interfacing with complex GMC electronics, including those found in Denali trim levels. They are a trusted source for transmission servicing and towing system inspections.

501 NE Main St, Lewistown, MT 59457

Specialties & Features

Diesel engine service
Transmission repair
Towing package maintenance

Business Information

Years in Business:8 years
Licensed:Yes
Insured:Yes
#3

Grizzly Automotive

4.6
(200 reviews)
Verified

Located in the larger city of Great Falls, Grizzly Automotive is a well-established, full-service shop with a strong reputation for handling a wide array of domestic trucks and SUVs. They have the technical capacity and staff to address everything from EcoTec engine issues to advanced 4WD system diagnostics, making them a reliable option for more comprehensive GMC needs.

1610 10th Ave S, Great Falls, MT 59405

Specialties & Features

4WD and towing system service
EcoTec engine diagnostics
General GMC maintenance

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market serving Roy, Montana, is characteristic of rural America. Roy itself, with a population under 200, does not support a dedicated, full-scale GMC specialist. Therefore, the market is centralized in **Lewistown (approx. 50 miles away)**, the county seat and regional commercial hub. The level of competition in Lewistown is moderate, with a handful of highly competent, independent shops dominating the market for truck and diesel repair. These shops have built their reputations on longevity, word-of-mouth, and demonstrated expertise with the agricultural and heavy-duty vehicles common to the region. The average quality of service is high, as these businesses survive by being trustworthy and capable with complex repairs. General "quick-lube" type chains are less prevalent for this type of specialized work. Pricing is typically fair and competitive for the region, often lower than dealership rates but reflective of the high skill level required. For the most specialized electronic or luxury feature repairs (e.g., complex Denali infotainment issues), residents may need to travel to larger centers like **Great Falls (approx. 120 miles away)**, where shops like Grizzly Automotive operate with a broader inventory of parts and specific technical training.

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 Roy regulations and climate