The Best GMC Repair in East Setauket, NY

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

#1

Setauket Automotive & Tire Co.

4.8
(280 reviews)
Verified

A long-standing, family-owned and operated business with an exceptional reputation for honesty and high-quality work. They are not a dedicated GMC dealer but have master technicians with extensive experience with GM vehicles. They are particularly noted for their diagnostic capabilities and complex repair work on engines and transmissions, making them a top choice for Duramax and EcoTec service.

2262 Nesconset Hwy, Stony Brook, NY 11790

Specialties & Features

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

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#2

Smithtown GMC (Official Dealer Service Department)

4.3
(150 reviews)
Verified

As the official GMC dealership for the region, this service department offers the highest level of factory-specific training, tools, and original GM parts. This is the definitive source for warranty work, complex electronics, and diagnosing issues specific to Denali trim levels. Their technicians are GM Certified and have direct access to the latest technical service bulletins.

340 E Main St, Smithtown, NY 11787

Specialties & Features

Denali luxury features and electronics
GMC towing package maintenance
Heavy-duty truck suspension

Business Information

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

Stony Brook Auto Service

4.7
(190 reviews)
Verified

A highly reputable independent shop known for its technical expertise and strong customer service. They have several ASE Certified Master Technicians on staff with advanced training in drivetrain and diesel systems. They are a strong alternative to the dealership for owners of GMC Sierra HD trucks, offering specialized service for Duramax diesel engines and related components at a potentially lower labor rate.

1693 Rt 347, Stony Brook, NY 11790

Specialties & Features

Duramax diesel service
Transmission repair
Heavy-duty truck suspension

Business Information

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

Why These Are the Top GMC Repair Auto Repair Shops in East Setauket

** The GMC repair market in the East Setauket area is characterized by high quality and moderate competition. The presence of a major university (Stony Brook University) and affluent suburbs creates a strong demand for reliable service for vehicles like the GMC Sierra, Yukon, and Acadia. * **Average Quality:** The average quality of repair shops is high, with several long-standing, reputable businesses. Customers generally expect and receive professional service. * **Competition Level:** Competition is healthy. It is split between the official dealership (Smithtown GMC) and several highly-capable independent shops (like Setauket Automotive and Stony Brook Auto Service). This benefits the consumer, as shops must maintain high standards to compete. * **Typical Pricing:** Pricing follows a standard tiered structure. The dealership (Smithtown GMC) typically commands the highest labor rates, reflecting their factory-specific tools, training, and OEM parts. The top-tier independents offer rates 15-25% lower than the dealership, providing significant value while still delivering expert, specialized service. For complex diesel or transmission work, all qualified shops will be premium service providers. **Conclusion:** For an East Setauket resident, the best choice depends on the specific need. For warranty work, intricate Denali electronics, or the assurance of OEM parts, **Smithtown GMC** is the clear leader. For all other mechanical repairs, especially those out of warranty, **Setauket Automotive & Tire Co.** and **Stony Brook Auto Service** offer an exceptional blend of expertise, reputation, and value.

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 East Setauket regulations and climate