The Best GMC Repair in South Jamesport, NY

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

#1

North Fork Performance & Diesel

4.8
(180 reviews)
Verified

Widely regarded as the premier shop on the North Fork for diesel and performance vehicle service. They have a dedicated Duramax specialist and are one of the few local shops equipped with advanced diagnostic tools for modern GMC electronics and emissions systems. Their reputation for handling complex drivability issues in Denali models and heavy-duty trucks is exceptional.

1045 Osborn Ave, Riverhead, NY 11901

Specialties & Features

Duramax diesel service
Allison transmission repair
EcoTec engine diagnostics

Business Information

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

Certified Auto Repair of Riverhead

4.6
(220 reviews)
Verified

A long-standing, family-owned business known for its trustworthy service and highly certified technicians. Multiple ASE Master Technicians on staff with specific training in GM platforms. They are a go-to for comprehensive service, including routine maintenance, complex transmission work, and 4WD system repairs on SUVs like the Yukon and Sierra.

821 E Main St, Riverhead, NY 11901

Specialties & Features

Transmission repair (Allison
10-speed)
4WD and towing system service
Denali luxury features and electronics

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

Jamesport Automotive & Tire

4.5
(95 reviews)
Verified

Located closest to South Jamesport, this shop provides reliable and personalized service for the local community. They have developed a strong niche in servicing the many trucks and SUVs used by local businesses and residents, with specific expertise in suspension systems and towing package maintenance for GMC models.

135 Main Road, Jamesport, NY 11947

Specialties & Features

Heavy-duty truck suspension
Towing package maintenance
General GMC service
repair

Business Information

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

Why These Are the Top GMC Repair Auto Repair Shops in South Jamesport

** The GMC repair market in the South Jamesport and greater North Fork area is characterized by a small number of high-quality, independent shops that have earned strong local reputations over many years, rather than a high volume of competitors. Due to the agricultural and maritime nature of the region, there is significant demand for expert repair of heavy-duty trucks, diesel engines, and towing systems. This has fostered a market where specialists like North Fork Performance & Diesel can thrive. The competition level is moderate; while there are several general repair shops, only a few possess the specific technical expertise, proprietary software, and tooling required for modern GMC diagnostics, especially for Duramax and Allison systems. Consequently, pricing is typically at a premium compared to standard auto repair, reflecting the higher level of specialization, training, and equipment required. Customers generally report high satisfaction with the quality of work, valuing expertise and reliability over the lowest price.

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 South Jamesport regulations and climate