Top 3 GMC Repair Shops in Afton

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

#1

Star Valley Service & Diesel

4.7
(180 reviews)
Verified

Widely regarded as the premier shop in Star Valley for diesel and heavy-duty truck service. They have built a reputation for tackling complex diagnostics on Duramax engines and Allison transmissions, which are common in GMC HD trucks. Their technicians are known for their methodical approach and deep knowledge of modern diesel systems, including emissions and towing-related electronics.

369 US-89, Afton, WY 83110

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Afton Transmission & 4x4

4.5
(95 reviews)
Verified

As the name implies, this provider specializes in the core mechanical systems critical for GMC trucks used in rugged terrain and for towing. They are the local experts for Allison transmission rebuilds and the 10-speed automatics found in newer models. Their work on 4WD transfer cases, differentials, and suspension lifts aligns perfectly with the needs of GMC Sierra and Yukon owners.

451 Washington St, Afton, WY 83110

Specialties & Features

Allison
10-speed transmission repair
4WD system service
Towing package maintenance

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

Valley Auto Electric & Diagnostics

4.4
(70 reviews)
Verified

This shop fills a critical niche, especially for newer GMC models, including Denali trims, which are heavily dependent on complex electronics. They excel at diagnosing issues with infotainment systems, driver-assist features, and electronic control modules that general mechanics often avoid. They are also proficient with EcoTec engine diagnostics and ensuring all towing and trailer brake controllers are functioning correctly.

215 S Washington St, Afton, WY 83110

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Towing system electronics

Business Information

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

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

** The GMC repair market in Afton, Wyoming, reflects its surrounding environment: rugged, practical, and reliant on capable vehicles. There is no dedicated GMC dealership in Afton; the nearest is likely in Idaho Falls, ID, or Logan, UT. This void is filled by a handful of highly competent, independent shops that have evolved to meet the specific demands of local truck and SUV owners. The **average quality** of service is notably high, as these businesses survive on reputation and word-of-mouth in a close-knit community. The **competition level** is moderate but specialized; while there are several general mechanics, only a few possess the advanced diagnostic tools and proprietary knowledge for modern GMC systems, particularly Duramax diesel and complex electronics. **Typical pricing** is competitive but not inexpensive. Customers are paying for specialized expertise that is scarce in a rural area. Labor rates are generally lower than at a metropolitan dealership, but the cost of complex repairs (e.g., transmission rebuilds, diesel injector replacement) remains significant due to parts and labor intensity. The market dynamics favor shops that can demonstrate proven expertise, leading to the strong reputations of the providers listed above. For major warranty work, owners may still need to travel to a dealership, but for maintenance, repairs, and diagnostics, the local specialists in Afton are the preferred choice.

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 Afton regulations and climate