The Best GMC Repair in Colchester, CT

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

#1

Colchester Automotive

4.8
(180 reviews)
Verified

A long-standing, family-owned full-service repair shop known for its honest diagnostics and high-quality work. They have built a strong reputation for handling complex engine and transmission work on domestic trucks, including GMC's Duramax and Allison systems. Their technicians are ASE Certified and have specific training in diesel and transmission services.

180 Old Hartford Rd, Colchester, CT 06415

Specialties & Features

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

Business Information

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

M & M Automotive

4.7
(120 reviews)
Verified

A well-respected local shop praised for its technical expertise and customer service. They have extensive experience with GM vehicles and invest in ongoing technician training for the latest engine management and electronic systems. They are a go-to for suspension work and routine maintenance on heavy-duty GMC trucks and SUVs.

108B Lebanon Ave, Colchester, CT 06415

Specialties & Features

Heavy-duty truck suspension
Duramax diesel service
towing package maintenance

Business Information

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

The GMC & Chevy Truck Specialists (Located in nearby Lebanon, serving Colchester)

4.9
(250 reviews)
Verified

While not located directly in Colchester, this shop is a dedicated specialist located just minutes away in Lebanon and is the premier choice for complex GMC repairs in the region. They focus exclusively on GM trucks and SUVs. Their expertise is unparalleled for Duramax performance, Allison transmission rebuilding, and diagnosing intricate electrical issues in Denali models.

180 Exeter Rd, Lebanon, CT 06249

Specialties & Features

Duramax diesel service
Denali luxury features and electronics
Allison transmission repair

Business Information

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

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

** The GMC repair market in Colchester is characterized by a few highly competent, independent shops that have earned strong community trust over many years, rather than a high volume of specialized-only facilities. The average quality of service for GMC repairs is high, as the leading shops have adapted to the technical demands of these vehicles to serve their local clientele. Competition is moderate but quality-based; reputation is the primary driver of business. Pricing is typically in line with regional averages. For standard services (oil changes, brake work), costs are competitive. For specialized work (Duramax injector replacement, Allison transmission overhaul, Denali electronic module programming), labor rates are premium, reflecting the required expertise and diagnostic equipment. Customers in Colchester have reliable local options for most needs but are willing to travel a short distance to a dedicated specialist like "The GMC & Chevy Truck Specialists" for the most complex or niche problems, where their focused expertise can often lead to a more efficient and accurate repair.

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 Colchester regulations and climate