The Best GMC Repair in Sweet Grass, MT

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

#1

GMC of Shelby

4.5
(120 reviews)
Verified

As the only authorized GMC dealership in the immediate region, this is the premier destination for factory-trained service, genuine GM parts, and complex warranty or recall work. Their technicians receive direct GM training, making them the top choice for sophisticated diagnostics on Denali electronics, EcoTec engines, and the latest Allison and 10-speed transmissions.

50 Grantier St, Shelby, MT 59474

Specialties & Features

Denali electronics
luxury features
Allison/10-speed transmission service
Duramax diesel performance

Business Information

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

Shelby Truck & Auto Repair

4.7
(85 reviews)
Verified

A highly reputable independent shop known for its expertise in heavy-duty trucks and diesel engines. They have built a strong local reputation for honest diagnostics, quality workmanship, and specializing in the needs of ranchers, farmers, and truck owners who rely on their vehicles for towing and heavy workloads.

112 2nd St S, Shelby, MT 59474

Specialties & Features

Duramax diesel service
heavy-duty suspension
towing package maintenance

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

Toole County Repair

4.3
(60 reviews)
Verified

A well-established, family-owned general repair shop with a strong focus on domestic trucks and SUVs. They are a trusted local option for routine maintenance, brake service, and mechanical repairs on GMC vehicles. They offer a practical and cost-effective solution for owners of older models or for services not requiring dealer-specific diagnostic tools.

405 1st St S, Shelby, MT 59474

Specialties & Features

General GMC service
4WD system service
EcoTec engine diagnostics

Business Information

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

Why These Are the Top GMC Repair Auto Repair Shops in Sweet Grass

** The GMC repair market serving Sweet Grass, MT, is concentrated in Shelby, which acts as the commercial and service hub for Toole County. The market is characterized by low competition but high specialization due to the rural and agricultural nature of the region. Residents heavily depend on reliable trucks, creating a market where shops must be proficient in diesel, 4WD, and towing systems to survive. **Average Quality:** The quality of service is generally high. Shops survive on reputation and word-of-mouth in a small community, which incentivizes thorough and honest work. The presence of a GMC dealership elevates the technical capability available in the region. **Competition Level:** Low to Moderate. There are only a handful of shops capable of working on complex GMC systems, which reduces direct competition but ensures each has a dedicated customer base. **Typical Pricing:** Pricing is competitive for a rural market. The dealership (GMC of Shelby) commands a premium for OEM parts and specialized diagnostics. Independent shops like Shelby Truck & Auto Repair typically offer lower labor rates, providing a valuable alternative for non-warranty work. Expect to pay $120-$160 per hour for labor at the dealership and $95-$130 at independent shops.

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 Sweet Grass regulations and climate