The Best GMC Repair in Sergeantsville, NJ

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

#1

Flemington GMC

4.5
(250 reviews)
Verified

As the local, factory-authorized GMC dealership, Flemington GMC is the premier destination for all services, especially complex diagnostics and warranty work. Their service department employs Master Technicians certified specifically on GMC platforms. They have direct access to the latest technical service bulletins, specialized tools, and genuine GM parts.

216 US-202, Flemington, NJ 08822

Specialties & Features

Duramax diesel service
Allison transmission repair
Denali luxury features and electronics

Business Information

Years in Business:50 years
Licensed:Yes
Insured:Yes
#2

County Line Auto & Truck Repair

4.8
(180 reviews)
Verified

A highly respected independent shop known for its expertise in both light-duty and heavy-duty trucks. They have built a strong reputation for honest diagnostics and quality workmanship on complex drivetrain and engine issues. They are a popular alternative to the dealership for Sergeantsville residents seeking specialized service without the dealership price point.

1248 US-202, Ringoes, NJ 08551

Specialties & Features

Heavy-duty truck suspension
4WD and towing system service
EcoTec engine diagnostics

Business Information

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

J&L Automotive

4.7
(90 reviews)
Verified

A well-regarded local shop known for its personalized service and deep technical knowledge. While they service all makes and models, they have developed a niche expertise with GM vehicles, including the full range of GMC trucks and SUVs. They are praised for their transparency and ability to handle everything from routine maintenance to advanced transmission and electrical repairs.

3972 US-202, Lambertville, NJ 08530

Specialties & Features

Transmission repair (Allison
10-speed)
EcoTec engine diagnostics
towing package maintenance

Business Information

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

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

** The GMC repair market servicing Sergeantsville, NJ, is characteristic of a semi-rural area. There is a clear hierarchy: the authorized dealership (**Flemington GMC**) represents the top tier for factory-specific expertise, warranty work, and access to OEM parts, typically at a premium price point. The competitive landscape is filled with a small number of highly capable independent shops (like **County Line Auto & Truck Repair** and **J&L Automotive**) that have earned community trust through consistent, high-quality work. These independents often provide a more personalized customer experience and can offer pricing that is 15-30% lower than the dealership for comparable services. Competition is moderate but quality is generally high, as shops in this region must be proficient with the trucks, SUVs, and towing needs common to the Hunterdon County lifestyle. Pricing reflects the specialized nature of GMC repair, particularly for diesel and transmission work. Customers can expect a significant range, with dealership labor rates often exceeding $175/hour, while reputable independents typically charge between $130-$160/hour. For Sergeantsville residents, the choice often comes down to the specific repair needed, price sensitivity, and the desire for a dealership versus an independent shop relationship.

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 Sergeantsville regulations and climate