The Best GMC Repair in P J S, NY

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

#1

T & T Auto & Truck Repair Inc.

4.7
(184 reviews)
Verified

A highly reputable, family-owned shop known for handling complex repairs on domestic trucks and SUVs. They have a strong reputation for honest diagnostics, quality workmanship, and specializing in the mechanical systems crucial for GMC owners, including diesel and transmission work. Their technicians have deep experience with GM platforms.

525 Route 112, Port Jefferson Station, NY 11776

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Advanced Auto Tech

4.6
(127 reviews)
Verified

This shop is recognized for its technical proficiency with modern vehicle electronics and computer systems. They are a go-to for diagnosing and repairing complex issues that often affect GMC Denali trims and advanced towing systems. Their team stays current with the latest diagnostic software and training.

9 Helen Ave, Port Jefferson Station, NY 11776

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Towing package maintenance

Business Information

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

Mavis Discount Tire - Port Jefferson Station

4.3
(269 reviews)
Verified

While part of a larger chain, this specific location has built a strong local reputation for general mechanical service and, crucially, 4WD and suspension work on trucks and SUVs. They are a practical choice for routine maintenance, tire services, and diagnosing 4WD system issues common in GMC Sierra and Yukon models. They handle a high volume of domestic vehicles.

5015 Nesconset Hwy, Port Jefferson Station, NY 11776

Specialties & Features

4WD and towing system service
Heavy-duty truck suspension
Towing package maintenance

Business Information

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

Why These Are the Top GMC Repair Auto Repair Shops in P J S

The GMC repair market in Port Jefferson Station is competitive but segmented. The average quality of general repair shops is good, but true *specialists* with deep, brand-specific expertise in all the requested areas (especially Duramax and Allison) are limited. Most shops are competent with standard EcoTec engines and suspension work, but for complex diesel or transmission issues, residents often look to the dedicated specialists like T & T Auto & Truck Repair. Competition is healthy, with a mix of long-standing local shops and regional chains. Pricing is typical for Long Island, which is above the national average. Labor rates generally range from $125-$175 per hour. For the specialized services listed, consumers can expect a premium, but the presence of several quality independents helps keep pricing competitive compared to dealership rates. The market serves a clientele that relies on their trucks for both personal use and local trades, creating strong demand for reliable, expert service.

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 P J S regulations and climate