The Best GMC Repair in Connelly, NY

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

#1

C & S Auto & Truck Repair

4.8
(180 reviews)
Verified

A highly respected, family-owned shop known for its deep expertise in domestic trucks and SUVs. They are the go-to facility in the area for complex diesel and transmission work, with a reputation for tackling problems other shops turn away. Their technicians are continuously trained on the latest GMC systems.

429 State Rte 52, Woodbourne, NY 12788 (Approx. 5 miles from Connelly)

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

Monticello Auto & Truck Repair

4.6
(120 reviews)
Verified

This well-established shop has a strong local presence and a dedicated following for its reliable service on all vehicle types, with a pronounced strength in GM products. They offer comprehensive diagnostics and are particularly adept with EcoTec engines and modern electronic systems found in Denali trims.

25 Jefferson St, Monticello, NY 12701 (Approx. 8 miles from Connelly)

Specialties & Features

EcoTec engine diagnostics
Denali luxury features and electronics
General GMC maintenance

Business Information

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

J&D Auto & Truck Center

4.7
(90 reviews)
Verified

While a slightly smaller operation, J&D Auto has built an excellent reputation for quality workmanship and personal service. They specialize in the mechanical systems critical to GMC truck functionality, including 4WD transfer cases, differentials, and towing system maintenance and repair.

327 Broadway, Monticello, NY 12701 (Approx. 8 miles from Connelly)

Specialties & Features

4WD and towing system service
Towing package maintenance
Drivetrain repair

Business Information

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

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

** The GMC repair market in the Connelly, NY area is characterized by a small number of high-quality, independent shops rather than a high volume of competitors. Due to the rural nature of Sullivan County and the prevalence of trucks for both personal and commercial use, the most successful shops have evolved to specialize in the complex systems found in modern GMC vehicles, particularly Duramax diesel and Allison transmissions. The market is not saturated, which allows reputable businesses with strong technical expertise to thrive. Competition is based almost entirely on reputation, word-of-mouth, and proven ability rather than price. Typical pricing is competitive with national averages but can be slightly higher for specialized diesel or transmission work due to the required expertise and tooling. Customers generally report high satisfaction with the top-tier shops, citing their honesty and ability to solve difficult problems, though wait times for appointments can be longer during peak seasons. For very specific warranty or recall work, residents often utilize the authorized GMC dealerships located in larger, neighboring towns like Middletown.

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 Connelly regulations and climate