The Best GMC Repair in Gillette, WY

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

#1

T&C Repair

4.8
(180 reviews)
Verified

Widely regarded as the top diesel and transmission specialist in the region. T&C Repair has built an exceptional reputation for deep technical expertise, particularly with complex Duramax engine diagnostics and Allison transmission rebuilds. They are a trusted name for fleet owners and individuals with heavy-duty trucks requiring reliable, high-quality work.

503 S Gillette Ave, Gillette, WY 82716

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty suspension

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Certified Auto Repair

4.6
(250 reviews)
Verified

A well-established, full-service shop known for its professional service and broad technical capabilities. They have multiple ASE-certified technicians and are equipped to handle everything from EcoTec engine diagnostics on smaller GMCs to the electrical complexities of Denali models and towing system maintenance.

503 Emerson Ave, Gillette, WY 82716

Specialties & Features

EcoTec engine diagnostics
Denali electronics
Towing package maintenance

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

High Country Diesel & Offroad

4.5
(90 reviews)
Verified

While serving a broad range of diesel trucks, this shop has a strong focus on performance and off-road capability, making them an excellent choice for GMC owners who use their trucks for demanding towing or off-pavement work. They excel in 4WD system service, suspension lifts, and performance-oriented Duramax tuning and repair.

1616 S Douglas Hwy #434, Gillette, WY 82718

Specialties & Features

4WD system service
Diesel performance
Off-road suspension

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market in Gillette, Wyoming, is robust and highly competitive, reflecting the city's economic dependence on heavy industry. The average quality of service is generally high due to the technical demands of the local clientele, who primarily operate heavy-duty diesel trucks for work. Competition is strong among independent specialists, with a clear divide between general auto repair shops and dedicated diesel/transmission experts. Typical pricing is at or slightly above the national average, justified by the specialized equipment and expertise required for Duramax and Allison systems. Consumers have excellent choices, ranging from long-established, broad-spectrum shops like Certified Auto Repair to hyper-specialized technicians like those at T&C Repair. For owners of Denali trims or trucks requiring advanced electronic diagnostics, choosing a shop with demonstrated experience in these areas is critical, as not all mechanics are equally proficient with the sophisticated onboard systems.

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 Gillette regulations and climate