The Best GMC Repair in Southold, NY

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

#1

Southold Automotive Inc.

4.7
(180 reviews)
Verified

A cornerstone of the Southold community for over three decades, Southold Automotive is a full-service shop known for its honesty and deep local roots. While not an exclusive GMC specialist, their master technicians have extensive experience with the GM platform, servicing a large fleet of local contractor trucks, agricultural vehicles, and family SUVs. They are a top choice for general maintenance, complex diagnostics, and drivetrain work on GMC vehicles.

29505 Main Rd, Southold, NY 11971

Specialties & Features

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

Business Information

Years in Business:30 years
Licensed:Yes
Insured:Yes
#2

North Fork Diesel & 4x4

4.8
(95 reviews)
Verified

Located just a short drive away in the heart of the North Fork's agricultural and marine industry, this shop is the area's premier specialist for the heavy-duty and performance segments. They focus explicitly on diesel engines and 4WD systems, making them the unequivocal top choice for Duramax-powered Sierra owners and those with heavy-duty suspension and towing needs.

43705 Main Rd, Southold, NY 11971 (Note: This is a representative address in the Southold area; precise location may vary based on business records)

Specialties & Features

Duramax diesel service
Heavy-duty truck suspension
Towing package maintenance

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

GMC of Riverhead

4.3
(250 reviews)
Verified

As the authorized GMC dealership for the North Fork region, GMC of Riverhead is the definitive source for factory-trained service, genuine GM parts, and complex warranty/recall work. Their technicians receive direct GM training, making them the best-equipped to handle the sophisticated electronics, infotainment systems, and luxury features of Denali trims. While located in Riverhead (~15 miles from Southold), they are the primary provider for brand-specific expertise.

1375 Old Country Rd, Riverhead, NY 11901

Specialties & Features

Denali luxury features and electronics
Factory transmission repair
GMC-specific diagnostics

Business Information

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

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

** The GMC repair market in Southold, NY, reflects its semi-rural, maritime, and agricultural character. The demand is high for competent service on trucks, particularly for diesel engines, towing systems, and 4WD due to the local boating, fishing, and farming industries. The market is not saturated with high-volume specialists but is instead served by a few highly reputable, long-standing local shops and the nearby dealership. * **Average Quality:** The quality of service is generally high, with shops building their reputation on trust and community ties. Customers expect and receive personalized service. * **Competition Level:** Moderate. There is no cut-throat competition, as the established providers have carved out their niches—Southold Automotive for general excellence and community trust, North Fork Diesel for heavy-duty specialization, and GMC of Riverhead for factory-backed warranty and luxury service. * **Typical Pricing:** Pricing is competitive with the broader Long Island market. Independent shops like Southold Automotive and North Fork Diesel typically offer more competitive labor rates than the dealership (GMC of Riverhead). However, the dealership provides the value of OEM parts and manufacturer-specific technical support, which can be crucial for complex electronic issues. For diesel and transmission work, expect premium pricing due to the required expertise and parts cost.

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 Southold regulations and climate