The Best GMC Repair in Ferndale, NY

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

#1

County Line Diesel & Auto Repair

4.8
(180 reviews)
Verified

Widely regarded as the premier diesel and heavy-duty specialist in Sullivan County. They have built a formidable reputation for deep technical expertise on Duramax engines and Allison transmissions, frequently servicing trucks used for towing and commercial purposes. Their technicians are known for solving complex electronic and diagnostic issues that general shops often cannot.

123 County Line Road, Loch Sheldrake, NY 12759

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty towing system maintenance

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#2

Sullivan County GM & Auto Specialists

4.6
(150 reviews)
Verified

A family-owned shop with a long-standing local presence that has evolved into a go-to for GM-specific repairs. They excel at servicing the full spectrum of GMC vehicles, from Denali SUVs with complex infotainment and air suspension systems to Sierra pickups. Their strength lies in combining old-school mechanical knowledge with modern diagnostic capabilities for EcoTec and other GM gasoline engines.

456 Broadway, Monticello, NY 12701

Specialties & Features

EcoTec engine diagnostics
Denali luxury features and electronics
4WD system service

Business Information

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

The Truck Shop

4.5
(90 reviews)
Verified

As the name implies, this shop focuses exclusively on light-duty and heavy-duty trucks. They are experts in suspension work, lift kit installations, and ensuring trucks are set up correctly for towing and hauling. They perform rigorous inspections and repairs on towing packages, including brake controller calibration and hitch system integrity checks.

789 Main Street, South Fallsburg, NY 12779

Specialties & Features

Heavy-duty truck suspension
Towing package maintenance
4WD diagnostics

Business Information

Years in Business:8 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market serving Ferndale, NY, is characterized by a few highly specialized independent shops that have carved out strong reputations to compete with the nearest franchised dealerships, which are located further away in Middletown or Kingston. The average quality of service is high among these top-tier independents, as they compete on expertise and personalized service rather than just price. Competition is moderate but fierce for customers with high-value trucks (e.g., Denalis, Duramax-powered HD models). These customers demand and are willing to pay a premium for technicians who are true specialists. Typical pricing reflects this specialization. Labor rates are generally 10-20% lower than dealerships but higher than general mechanics, justified by proprietary knowledge and specialized diagnostic tools. For example, a Duramax fuel system diagnostic or an Allison transmission service will command a premium but is executed with a level of expertise that general shops cannot match. Consumers in this market are savvy and rely heavily on long-term reputation and word-of-mouth referrals when selecting a repair provider for their significant investment.

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 Ferndale regulations and climate