The Best GMC Repair in Sidney, MT

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

#1

Sidney GM Center

4.6
(180 reviews)
Verified

As the primary authorized GMC dealership in Sidney, this facility is the go-to for factory-trained technicians, genuine GM parts, and the most advanced diagnostic equipment. They are best equipped to handle complex electronics, warranty work, and recalls on newer models, including high-end Denali trims.

1200 S Central Ave, Sidney, MT 59270

Specialties & Features

Duramax diesel service
Allison transmission repair
Denali luxury features and electronics

Business Information

Years in Business:40 years
Licensed:Yes
Insured:Yes
#2

Performance Auto & Diesel

4.7
(95 reviews)
Verified

A highly reputable independent shop known for its deep expertise in both gas and diesel performance and repair. They are a favorite among local tradespeople and oil field workers who rely on their trucks for heavy towing. They are known for pragmatic, durable repairs and performance upgrades.

901 S Central Ave, Sidney, MT 59270

Specialties & Features

Diesel engine service (Duramax)
heavy-duty truck suspension
towing package maintenance

Business Information

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

Richland Repair & Machine

4.4
(70 reviews)
Verified

A well-established, full-service machine shop and repair facility that handles everything from routine maintenance to major engine and transmission overhauls. They are particularly skilled with older model GMCs and are a trusted source for rebuilding components rather than just replacing them, offering cost-effective solutions.

204 3rd St NE, Sidney, MT 59270

Specialties & Features

EcoTec engine diagnostics
transmission repair (Allison)
4WD and towing system service

Business Information

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

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

The GMC repair market in Sidney, Montana, is robust and specialized, reflecting the community's dependence on reliable, capable trucks. The average quality of service is high, as shops must compete for the business of a knowledgeable and demanding clientele. Competition is strong, particularly between the dealership and the leading independents. The dealership (Sidney GM Center) holds an advantage in OEM parts, proprietary software, and warranty services. In contrast, independent shops like Performance Auto & Diesel and Richland Repair often compete on price, personalized service, and faster turnaround times for non-warranty work. Typical pricing is competitive but not inexpensive, as the complexity of modern diesel and transmission systems requires significant technician expertise and expensive tooling. Customers generally report high satisfaction, with choice often coming down to the specific nature of the repair—complex electronic issues favor the dealership, while mechanical, heavy-duty, or performance-oriented work often goes to the specialists.

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 Sidney regulations and climate