The Best GMC Repair in Copiague, NY

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

#1

Lindenhurst Auto Repair & Diesel Specialists

4.8
(240 reviews)
Verified

A family-owned and operated shop renowned for its deep expertise in both gasoline and diesel powertrains. They are a top-tier independent shop that invests in advanced diagnostic tools specifically for GM vehicles. Known for honest diagnostics and high-quality workmanship, they are a go-to for complex issues on Denali trims and heavy-duty trucks.

100 South 4th Street, Lindenhurst, NY 11757

Specialties & Features

Duramax diesel service
Allison transmission repair
EcoTec engine diagnostics

Business Information

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

Certified Auto & Truck Repair

4.6
(180 reviews)
Verified

This shop has built a strong reputation for handling the full spectrum of GMC trucks and SUVs, from the Sierra 1500 to the 3500 HD series. They have specific technicians trained on Allison transmissions and 4WD systems. Customers frequently praise their ability to accurately diagnose electrical and towing-related issues.

560 Albany Avenue, Amityville, NY 11701

Specialties & Features

4WD and towing system service
Heavy-duty truck suspension
Transmission repair

Business Information

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

A&M Auto Tech Inc.

4.5
(90 reviews)
Verified

A highly-rated, smaller shop known for its personalized service and technical competency with modern GMC vehicles. They excel in electronic diagnostics, making them a good choice for addressing infotainment, sensor, and comfort feature issues in Denali models, in addition to core mechanical repairs.

265 Broadway, Amityville, NY 11701

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
General maintenance and repairs

Business Information

Years in Business:9 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market in the Copiague area is competitive, characterized by a mix of long-standing independent shops and larger dealerships in nearby towns like West Babylon and Huntington. The average quality is high, as successful independent shops must differentiate themselves through specialization and superior customer service to compete with dealerships. For the specialized services requested (Duramax, Allison, 4WD), there are only a handful of providers with proven expertise, creating a niche, high-demand market. Pricing is typically 20-30% lower than dealership rates for labor, while part costs are generally comparable. Customers in this market show strong loyalty to shops that demonstrate proven expertise with complex GMC systems, particularly diesel engines and advanced electronics, and are willing to travel a short distance within the South Shore of Long Island for a trusted specialist.

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 Copiague regulations and climate