The Best GMC Repair in Jamesport, NY

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

#1

North Fork Performance & Diesel

4.7
(180 reviews)
Verified

Widely regarded as the premier specialist for diesel and heavy-duty truck service on the North Fork. They are known for their deep technical expertise, particularly with Duramax engines and Allison transmissions. They cater specifically to the needs of local contractors, boat owners, and residents with high-end Denali models, offering comprehensive diagnostics and repair.

1345 Peconic Bay Blvd, Laurel, NY 11948 (Serving the Jamesport area)

Specialties & Features

Duramax diesel service
Allison transmission repair
heavy-duty suspension and towing

Business Information

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

Riverhead Auto Repair & Service

4.5
(220 reviews)
Verified

A well-established, full-service shop with a strong reputation for honesty and quality workmanship. While not exclusively a GMC specialist, they have several ASE-certified technicians with extensive experience servicing the full GMC lineup, from Sierra pickups to Yukon and Acadia SUVs. They are a top choice for general maintenance, EcoTec engine diagnostics, and electronic system troubleshooting.

925 E Main St, Riverhead, NY 11901

Specialties & Features

EcoTec engine diagnostics
Denali electronics
general maintenance and repair

Business Information

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

Certified Auto Technicians

4.3
(90 reviews)
Verified

A smaller, highly technical shop that excels in complex diagnostics and transmission work. They have specific certifications for Allison transmissions and are frequently recommended for 4WD system service and towing package maintenance. Their focus is on solving difficult problems that general mechanics may not be equipped to handle.

50 Old Country Rd, Calverton, NY 11933 (Approx. 10 minutes from Jamesport)

Specialties & Features

Allison and 10-speed transmission service
4WD system repair
towing package maintenance

Business Information

Years in Business:8 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market serving Jamesport, NY, is characterized by a few highly competent independent shops rather than a high-volume dealership presence. The closest GMC dealerships are in Medford and Smithtown, creating a strong niche for independent specialists on the North Fork. The market competition is moderate but specialized; shops that excel in diesel, transmission, or complex electronics maintain a strong, loyal customer base. The average quality of service is high, as these businesses rely heavily on local reputation and word-of-mouth. Typical pricing is competitive with dealership rates but often provides greater value through more personalized service and direct access to specialized technicians. Consumers are advised to book appointments well in advance, especially during peak seasons (spring and late fall), as the top specialists are often in high demand.

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 Jamesport regulations and climate