The Best GMC Repair in Acton, MT

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

#1

GMC of Billings

4.5
(450 reviews)
Verified

As the official GMC dealership for the region, this facility offers the highest level of factory-specific training, tools, and genuine GM parts. Their service department is the most equipped to handle complex diagnostics on Denali electronics, the latest 10-speed transmissions, and EcoTec engines. They are the primary destination for warranty work and recalls.

2429 King Ave W, Billings, MT 59102

Specialties & Features

Denali luxury features and electronics
Allison
10-speed transmission repair
EcoTec engine diagnostics

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

Certified Diesel & 4x4

4.8
(180 reviews)
Verified

A highly regarded independent shop that has built its reputation on expertise in diesel performance and heavy-duty systems. They are the go-to specialists for Duramax engine service, from routine maintenance to complex repairs and performance tuning. Their work on 4WD systems and heavy-duty truck suspensions is particularly praised by owners of GMC HD trucks (Sierra 2500/3500).

1225 Monad Rd, Billings, MT 59101

Specialties & Features

Duramax diesel service
4WD and towing system service
Heavy-duty truck suspension

Business Information

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

T & C Transmissions and Auto Care

4.6
(120 reviews)
Verified

A long-standing, family-owned shop with a core strength in transmission repair and general automotive excellence. They are recognized experts in rebuilding and servicing Allison transmissions, a critical need for many GMC owners. Their broad auto care expertise allows them to effectively handle towing package maintenance and general service on a wide range of GMC models.

101 S 26th St, Billings, MT 59101

Specialties & Features

Allison transmission repair
Towing package maintenance
General GMC service
diagnostics

Business Information

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

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

** The GMC repair market servicing Acton, Montana, is characterized by a reliance on providers in the larger Billings area, approximately a 30-minute drive away. Due to Acton's rural nature, there are no dedicated GMC-specific repair shops within the community itself. The market is bifurcated: owners seeking factory-certified work, warranty service, and complex electronics diagnosis will gravitate toward the **GMC dealership** in Billings, which commands premium pricing but offers OEM assurance. For specialized heavy-duty and diesel needs, particularly for work trucks and vehicles outside of warranty, the independent specialists like **Certified Diesel & 4x4** are highly competitive. These shops often provide more personalized service and can be more cost-effective for non-warranty repairs, especially those related to performance or heavy-use components. Generalists with a strong reputation in key areas (like **T & C Transmissions**) fill the crucial role of trusted, long-term care providers for core mechanical systems. Overall, competition is healthy among the top-tier Billings shops, leading to a high standard of quality. Pricing is typical for the region, with dealership labor rates being the highest, followed by the specialized independents. Acton residents have access to excellent GMC repair options, but must be prepared to travel a short distance for specialized care.

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 Acton regulations and climate