The Best GMC Repair in Old Mystic, CT

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

#1

Premier Auto & Truck Repair

4.8
(240 reviews)
Verified

Premier Auto & Truck Repair is widely regarded as the top-tier independent shop in the region for GM trucks and SUVs. Their technicians have advanced training and direct experience with the full range of GMC models, from the Sierra 1500 to the heavy-duty 3500 series. They are known for their diagnostic accuracy, use of high-quality parts, and exceptional customer service, often dealing with complex issues that dealerships struggle to resolve.

230 Long Hill Road, Groton, CT 06340 (Approx. 4 miles from Old Mystic)

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

Noank Village Automotive

4.7
(180 reviews)
Verified

Noank Village Automotive has built a stellar reputation for honest and thorough service over many years. While they service all makes, they have specific expertise with American trucks and SUVs. They are a go-to for local boat owners and tradespeople who rely on their GMC trucks for towing. They excel in electrical diagnostics, making them a strong choice for Denali electronics and towing package issues.

22 Pearl Street, Noank, CT 06340 (Approx. 3 miles from Old Mystic)

Specialties & Features

EcoTec engine diagnostics
Towing package maintenance
Denali luxury features and electronics

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#3

Mystic Transmissions & Auto Care

4.6
(150 reviews)
Verified

As the name implies, this provider has a core strength in transmission services, including the robust Allison transmissions found in GMC trucks. They are a trusted local business for major drivetrain work. They have expanded their services to become a full-service shop capable of handling 4WD system service, differential work, and general maintenance on GMC vehicles.

48 Jerry Browne Road, Mystic, CT 06355 (Approx. 2 miles from Old Mystic)

Specialties & Features

Allison transmission repair
4WD and towing system service
General GMC maintenance

Business Information

Years in Business:9 years
Licensed:Yes
Insured:Yes

Why These Are the Top GMC Repair Auto Repair Shops in Old Mystic

** The GMC repair market serving Old Mystic, CT, is characterized by a handful of high-quality, independent service centers rather than a high volume of competitors. There is no dedicated GMC-only specialist within the village itself, leading residents to rely on excellent providers in neighboring Groton, Mystic, and Noank. The competition level is moderate but of high quality; these shops compete on expertise and personalized service rather than price alone. The average quality is notably high, as evidenced by the consistently excellent reviews across the top providers. Typical pricing for labor in this semi-rural New England market ranges from **$125 - $165 per hour**, which is generally 20-30% less than the nearby dealership service departments while often providing more specialized and attentive care for complex truck systems. Customers in this area value long-term relationships and technical competence, which the leading shops have successfully cultivated.

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 Old Mystic regulations and climate