The Best GMC Repair in Annandale, NJ

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

#1

German Auto & Truck Service

4.8
(180 reviews)
Verified

While the name suggests a European focus, this highly-rated local shop has built a formidable reputation for servicing American diesel trucks, particularly the Duramax. They are known for their technical expertise, honest diagnostics, and ability to handle complex electrical and transmission issues on heavy-duty platforms. They are a top choice for owners who want dealer-level expertise without the dealer price.

44 Old Clinton Rd, Annandale, NJ 08801

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck diagnostics

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Clinton Truck & Auto Repair

4.7
(220 reviews)
Verified

Located just minutes from Annandale in the neighboring town of Clinton, this shop is a cornerstone for truck owners in Hunterdon County. They explicitly advertise service for Duramax diesel and Allison transmissions. Their technicians are experienced with the full range of GMC services, from routine maintenance on Sierra 1500s to complex repairs on heavy-duty 2500/3500 series trucks, including 4WD and towing systems.

20 Beaver Ave, Clinton, NJ 08809

Specialties & Features

Duramax diesel service
Allison transmission repair
4WD and towing system service

Business Information

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

County Line Auto & Truck Repair

4.6
(150 reviews)
Verified

Situated in Flemington, this provider is another well-regarded specialist for the region. They offer comprehensive services for both light-duty and heavy-duty GMC trucks, with a strong focus on drivability, suspension, and transmission work. Customer reviews frequently praise their fair pricing, clear communication, and ability to solve persistent issues that other shops could not.

2245 US Highway 22, Flemington, NJ 08822

Specialties & Features

Allison transmission repair
Heavy-duty truck suspension
EcoTec engine diagnostics

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market serving Annandale, NJ, is characterized by high-quality, independent service providers rather than a high volume of options within the town's immediate borders. The competitive landscape is robust in the greater Hunterdon County area, with several shops having established long-term, excellent reputations over 10-25 years. These specialists compete not on price alone but on demonstrated technical expertise, particularly with complex systems like Duramax diesel engines and Allison transmissions, which are common in this truck-owning demographic. The average quality is notably high, as these businesses survive by outperforming dealership alternatives on both cost and personalized service. Pricing is competitive but reflects the specialized knowledge required; expect labor rates for diesel and transmission work to be premium, though typically 15-30% lower than a central NJ GMC dealership. Consumers are well-served by a handful of expert shops but have fewer than a dozen truly specialized options to choose from, making reputation and proven experience the critical decision factors.

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 Annandale regulations and climate