The Best GMC Repair in Grass Range, MT

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

#1

Central Montana Diesel & Auto

4.7
(180 reviews)
Verified

A highly-regarded, family-owned shop known as the go-to destination for diesel performance and heavy-duty truck repair in the region. They have invested in advanced diagnostic tools specifically for modern GMC trucks and are praised for their honest diagnostics and quality workmanship.

1223 Main Street, Lewistown, MT 59457

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

Lewistown GMC

4.3
(95 reviews)
Verified

As the area's official GMC dealership, this provider offers factory-trained technicians, genuine GM parts, and direct access to the latest technical service bulletins. They are the best-equipped facility for complex electronics, Denali luxury feature repairs, and warranty work.

1425 W Main Street, Lewistown, MT 59457

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Towing package maintenance

Business Information

Years in Business:40 years
Licensed:Yes
Insured:Yes
#3

Pro Auto & Truck Repair

4.5
(120 reviews)
Verified

A well-established independent shop known for its broad expertise and dependable service. They are a strong alternative for general GMC maintenance and repairs, including transmission service, 4WD system maintenance, and engine diagnostics, often at a more competitive rate than the dealership.

901 NE 1st Avenue, Lewistown, MT 59457

Specialties & Features

Transmission repair (Allison
10-speed)
4WD and towing system service
EcoTec engine diagnostics

Business Information

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

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

** The GMC repair market serving Grass Range, Montana, is centralized in Lewistown, the Fergus County seat approximately 30 miles away. Due to Grass Range's minimal commercial infrastructure, residents are accustomed to traveling to Lewistown for specialized automotive services. The market is characterized by a healthy mix of one official dealership and several highly capable independent shops, creating a competitive environment that benefits consumers. **Average Quality** is high, as rural shops must be versatile and proficient in handling the heavy-duty trucks common in agricultural and ranch communities. **Competition Level** is moderate but specialized; while there aren't dozens of shops, the existing ones have carved out strong reputations for specific expertise (e.g., diesel performance at Central Montana Diesel, OEM expertise at Lewistown GMC). **Typical Pricing** reflects this; dealership labor rates are at a premium, while independent shops offer more moderate rates. For complex diesel or transmission work, pricing is consistent with regional standards and is generally considered an investment in the long-term viability of a critical asset. Customers are advised to seek quotes, but the consensus is that value and expertise are prioritized over finding the absolute lowest price.

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 Grass Range regulations and climate