Top 3 GMC Repair Shops in South Harrison Township

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

#1

Mullica Hill Auto & Diesel Service

4.8
(180 reviews)
Verified

A highly reputable, family-owned shop known for its technical expertise with both gasoline and diesel powertrains. They are a top-tier destination for complex diagnostics and repair on modern GMC trucks, particularly Duramax and Allison systems. Their reputation is built on transparency, quality workmanship, and deep technical knowledge.

4 North Main Street, Mullica Hill, NJ 08062

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

C & M Auto & Transmission Specialist

4.6
(150 reviews)
Verified

As the name implies, this shop has a strong focus on transmission services, making them a go-to for the robust Allison transmissions found in GMC trucks and SUVs. They also provide comprehensive general repair and are frequently recommended for drivetrain and 4WD issues. They are known for fair pricing and effective problem-solving.

1236 Harding Hwy, Swedesboro, NJ 08085

Specialties & Features

Allison transmission repair
4WD and towing system service
EcoTec engine diagnostics

Business Information

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

Harrisonville Auto & Truck Repair

4.4
(90 reviews)
Verified

A well-established, local full-service shop that has served the South Harrison and surrounding community for decades. They offer a wide range of services from basic maintenance to complex engine and electrical diagnostics. They are a reliable choice for general GMC upkeep, towing package maintenance, and suspension work.

504 Mullica Hill Rd, South Harrison Township, NJ 08029

Specialties & Features

Towing package maintenance
EcoTec engine diagnostics
General GMC service and repair

Business Information

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

Why These Are the Top GMC Repair Auto Repair Shops in South Harrison Township

** The GMC repair market in and around South Harrison Township, NJ, is characterized by a few highly competent independent shops rather than a high volume of competition. The rural nature of the area means many residents and businesses rely on heavy-duty trucks (Sierra, Canyon) and SUVs (Yukon, Acadia), creating a strong demand for the specialized services you've listed. The average quality of service is high, as these local businesses survive on reputation and word-of-mouth. You will not find large franchise chains specializing in this niche here. Pricing is typically competitive with, or slightly below, dealership rates while offering a more personalized service experience. Labor rates are generally in the $120-$150/hour range for these specialized shops. The closest GMC dealerships are in Deptford and Turnersville, making the independent local providers a more convenient and often more cost-effective option for specialized repairs outside of warranty. For the most complex electronics or Denali-specific luxury features, some shops may partner with or recommend a dealership for certain proprietary programming, but the top providers listed are fully capable of the mechanical and core electrical diagnostics and repair.

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 South Harrison Township regulations and climate