The Best GMC Repair in Holtsville, NY

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

#1

Corwin's GMC & Truck Repair

4.8
(240 reviews)
Verified

A family-owned and operated business with a long-standing reputation for specializing in GM trucks and SUVs. They are known for their deep technical expertise, particularly with complex diesel and transmission systems, and for providing a more personalized, trustworthy alternative to dealership service departments.

100 Portion Rd, Ronkonkoma, NY 11779 (Approx. 4 miles from Holtsville center)

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

Suffolk Diesel & Turbo

4.7
(180 reviews)
Verified

As the name implies, this shop is a premier destination for diesel engine service on Long Island. Their technicians are experts in Duramax engine diagnostics, performance, and repair. They also possess comprehensive knowledge of the associated drivetrain and towing systems crucial for heavy-duty GMC trucks.

265 Old Nicosia Rd, Patchogue, NY 11772 (Approx. 6 miles from Holtsville center)

Specialties & Features

Duramax diesel service
EcoTec engine diagnostics
Towing package maintenance

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#3

Certified Auto Repair & Service

4.6
(150 reviews)
Verified

A well-established, full-service shop known for its reliable work and strong customer service. While they service all makes, they have dedicated GM specialists and advanced diagnostic equipment capable of handling everything from EcoTec engine issues to the sophisticated electronics in Denali models. They are a great local option for general and specialized GMC maintenance.

100 Ruland Rd, Farmingville, NY 11738 (Adjacent to Holtsville)

Specialties & Features

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

Business Information

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

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

** The GMC repair market in the Holtsville area is robust and characterized by a healthy mix of dealerships and highly competent independent specialists. The average quality of specialized repair is high, driven by the significant number of truck and SUV owners in Suffolk County. Competition is strong, which benefits consumers by fostering expertise and competitive pricing. * **Average Quality:** Very good for specialized services. Shops that survive and thrive in this market typically do so by developing a niche, such as diesel repair or transmission work. * **Competition Level:** High. Customers have multiple reputable options, forcing shops to maintain high standards of service and transparency to earn positive reviews and repeat business. * **Typical Pricing:** Independent specialists generally offer labor rates 20-30% lower than the local GMC dealership, while often providing more experienced, dedicated technicians for complex systems like Duramax and Allison. Parts costs are relatively consistent, but the independent shops often have more flexibility to use high-quality aftermarket or performance parts if requested. A complex diesel injector repair, for example, could run $2,500-$4,000+, while an Allison transmission service is typically $300-$500.

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 Holtsville regulations and climate