The Best GMC Repair in Uniondale, NY

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

#1

Certified Diesel & Turbo Inc.

4.8
(240 reviews)
Verified

Widely regarded as the premier diesel specialist in Nassau County. They focus exclusively on diesel powertrains, with deep expertise in Duramax engines, their complex emission systems, and the paired Allison transmissions. This is not a general mechanic but a true specialist for heavy-duty GMC trucks (Sierra 2500HD/3500HD).

245 Main St, Westbury, NY 11590 (Approx. 2 miles from Uniondale)

Specialties & Features

Duramax diesel service
Allison transmission repair
Diesel emission system (DPF/DEF) service

Business Information

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

Hempstead Tire & Auto Center

4.5
(180 reviews)
Verified

A long-standing, full-service auto center with a strong reputation for handling a wide range of domestic trucks. They have specific technicians trained in 4WD systems, towing package installation/maintenance, and suspension work for both light-duty and heavy-duty GMC models. They are a go-to for practical, robust repairs.

100 Main St, Hempstead, NY 11550 (Approx. 2.5 miles from Uniondale)

Specialties & Features

4WD and towing system service
Heavy-duty truck suspension
General GMC maintenance
diagnostics

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

Precision Auto & Electronics

4.6
(95 reviews)
Verified

This shop fills a critical niche for modern GMCs, especially Denali trims. Their strength lies in advanced electrical diagnostics, infotainment systems, driver-assist features (like Super Cruise), and complex onboard computer issues. They also handle general mechanical work on gasoline engines, including the EcoTec3 family.

555 Peninsula Blvd, East Meadow, NY 11554 (Approx. 3 miles from Uniondale)

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Advanced driver-assist system calibration

Business Information

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

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

** The GMC repair market in the Uniondale area is competitive and tiered. The average quality is high, reflective of the demanding Long Island consumer base. The market consists of: * **General Mechanics:** Capable of basic maintenance but often lack the proprietary tools and deep, model-specific knowledge for complex diesel, transmission, or electronic issues. * **Dealerships:** The primary alternative, offering OEM parts and certified technicians. However, they typically command a significant price premium (often 25-50% higher than independent specialists) and may have longer wait times for service appointments. * **Specialists (like those listed):** These shops represent the top tier for owners of high-spec GMCs (Duramax, Denali). They compete on a combination of deep technical expertise, more personalized service, and lower labor rates than dealerships. Pricing is generally premium but justified by their specialized capabilities. For a complex job like a Duramax injector replacement or Allison transmission rebuild, a specialist is often the most knowledgeable and cost-effective solution outside of the dealership network. Finding a single shop that is an absolute expert in all seven requested specialties is challenging; therefore, the market has naturally segmented, with the top providers each dominating 2-3 key areas.

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 Uniondale regulations and climate