The Best GMC Repair in Simms, MT

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

#1

Certified Diesel & Turbo

4.8
(180 reviews)
Verified

Widely regarded as the premier diesel specialist in Central Montana. They focus exclusively on diesel performance, diagnostics, and repair, making them the top choice for complex Duramax engine issues that general mechanics may struggle with. Their expertise extends to the Allison transmissions commonly paired with these engines.

1411 10th Ave S, Great Falls, MT 59405

Specialties & Features

Duramax diesel service
Allison transmission repair
Diesel performance tuning

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#2

The Auto Shop

4.7
(250 reviews)
Verified

A highly reputable, full-service independent shop known for its skilled technicians and honest service. They have extensive experience with domestic trucks and SUVs, including GMC. They are a strong all-around choice for everything from EcoTec engine diagnostics to suspension work and general towing package maintenance.

509 9th St NW, Great Falls, MT 59404

Specialties & Features

EcoTec engine diagnostics
Heavy-duty truck suspension
4WD and towing system service

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#3

Scheel's Auto & Truck Center

4.6
(190 reviews)
Verified

A well-established, family-owned business with a long history of serving the agricultural and commercial truck needs of the area. Their "Truck Center" focus means they are exceptionally well-equipped for heavy-duty GMC trucks (Sierra 2500HD/3500HD), including their frames, suspensions, and drivetrains.

3800 2nd Ave N, Great Falls, MT 59401

Specialties & Features

Heavy-duty truck suspension
Transmission repair
General truck service
maintenance

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market serving Simms, Montana, is characterized by a reliance on providers in the larger hub of Great Falls, approximately a 20-25 minute drive away. There are no dedicated GMC dealerships or exclusive specialists within Simms itself. The market in Great Falls is moderately competitive, with a clear distinction between general auto repair shops and specialized diesel/truck centers. **Average Quality:** The quality is generally high, with several long-standing, family-owned businesses that have built reputations on trust and expertise, particularly with the domestic trucks that dominate Montana roads. **Competition Level:** Moderate. While there are numerous options, the shops that specialize in diesel and heavy-duty truck repair stand apart and are in high demand. For Denali-specific luxury and electronic features, the options are more limited, and owners may face longer wait times or need to travel to a dealership in a larger city for certain proprietary issues. **Typical Pricing:** Pricing is competitive with national averages for independent shops, typically 20-30% lower than dealership labor rates. Specialized diesel work commands a premium due to the required expertise and equipment. Expect labor rates in the $120-$150/hour range for standard repair and $150-$180/hour for diesel/turbo specialist work.

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 Simms regulations and climate