The Best GMC Repair in Harrison, MT

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

#1

Mastertek Automotive & Diesel

4.8
(180 reviews)
Verified

Mastertek is widely regarded as the leading diesel and transmission specialist in the region. They have built a strong reputation for complex diagnostics and repairs on modern GMC trucks, with a particular focus on Duramax and Allison systems. Their technicians are continuously trained on the latest technologies.

3014 Harrison Ave, Butte, MT 59701 (Approx. 25 miles from Harrison)

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty towing system maintenance

Business Information

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

Hi-Line Performance & Repair

4.6
(95 reviews)
Verified

Hi-Line Performance specializes in both performance and repair for American trucks. They are a go-to shop for GMC owners needing work on suspension, 4WD systems, and engine performance. They offer everything from routine EcoTec3 service to custom suspension lifts for heavy-duty models.

104 S Montana St, Dillon, MT 59725 (Approx. 40 miles from Harrison)

Specialties & Features

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

Business Information

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

Certified Auto Care of Butte

4.5
(220 reviews)
Verified

Certified Auto Care is a well-established, full-service shop known for its reliable diagnostics and broad service capabilities. While they service all makes and models, they have specific technicians adept at handling the electronics and luxury features found in GMC Denali models, in addition to general mechanical repair.

2320 Cornell Ave, Butte, MT 59701 (Approx. 25 miles from Harrison)

Specialties & Features

Denali electronics and features
General GMC service
Towing package maintenance

Business Information

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

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

** The GMC repair market servicing Harrison, MT, is characterized by a reliance on regional specialists in larger nearby hubs like Butte and Dillon. Due to Harrison's small size and rural location, there are no dedicated GMC dealerships or exclusive GMC specialty shops within the city itself. The market is comprised of independent, highly skilled garages that have carved out niches to serve the robust population of truck owners in Southwest Montana. **Average Quality:** The quality of service is generally high, as these shops survive on reputation and word-of-mouth in a close-knit community. They tend to employ experienced technicians who are proficient with the demanding needs of modern GMC trucks used for farming, ranching, and towing. **Competition Level:** Competition is moderate but specialized. Rather than competing on price alone, shops differentiate themselves through specific expertise (e.g., one for transmissions, another for diesel performance). Customers often choose a shop based on the specific repair needed. **Typical Pricing:** Labor rates are competitive with national averages for specialized auto repair, typically ranging from **$120 - $150 per hour**. Given the complexity of diesel engines and advanced electronics, repairs can be significant investments, but customers are generally paying for expert-level knowledge that is not readily available elsewhere in the immediate area.

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 Harrison regulations and climate