Top 3 GMC Repair Shops in South Amboy

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

#1

A&T Tire and Auto Center

4.7
(280 reviews)
Verified

A&T is a highly reputable, family-owned auto center known for handling complex diagnostics and repairs on both domestic and import vehicles. They have built a strong reputation for expertise in diesel engine service and transmission work, making them a top choice for GMC Sierra HD and Yukon XL owners in the region. Their technicians are ASE Certified and they invest in ongoing training for modern vehicle systems.

535 Bordentown Ave, South Amboy, NJ 08879

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#2

Mavis Tire & Brake

4.4
(150 reviews)
Verified

As part of a larger regional chain, this South Amboy location benefits from corporate resources, training, and parts procurement, particularly for suspension, brakes, and drivetrain components. They are a reliable option for routine GMC maintenance, 4WD system service, and towing package inspections. They offer a strong warranty on their work.

25 N Broadway, South Amboy, NJ 08879

Specialties & Features

4WD and towing system service
Towing package maintenance
EcoTec engine diagnostics

Business Information

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

DeSimone GMC of Edison

4.5
(400 reviews)
Verified

While not in South Amboy, this is the closest, highest-rated GMC dealership and is a crucial part of the local repair ecosystem. For complex electronics, Denali luxury features, and transmission software updates, the factory-trained technicians and proprietary GM diagnostic tools here are unmatched. They are the definitive source for warranty work and OEM parts.

1077 US-1, Edison, NJ 08817 (Approx. 6 miles from South Amboy)

Specialties & Features

Denali luxury features and electronics
Allison
10-speed transmission repair
Factory-certified GMC service

Business Information

Years in Business:30 years
Licensed:Yes
Insured:Yes

Why These Are the Top GMC Repair Auto Repair Shops in South Amboy

** The GMC repair market in South Amboy is characterized by a mix of competent general repair shops and the necessity to look to neighboring towns like Edison and Woodbridge for specialized, brand-specific service. The local market is moderately competitive, with several shops capable of handling standard maintenance on GMC trucks and SUVs (like oil changes, brake service, and basic suspension work). However, for the specialized services you've listed—particularly Duramax diesel and Allison transmission repair—the options within the immediate city limits are limited. This creates a market dynamic where residents often choose between a trusted local independent shop (like A&T Tire) for mechanical expertise and the authorized dealership (DeSimone GMC) for complex electronic and warranty-related issues. **Typical Pricing:** Pricing follows this bifurcation. Independent shops generally offer labor rates 20-30% lower than the dealership. A complex diesel injector replacement or transmission rebuild will be significantly more affordable at a specialist like A&T, while a dealership's higher rate is justified by their direct access to GM technical resources, software, and OEM parts. For the specialized work you require, expect labor rates in the $140-$180/hour range.

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 Amboy regulations and climate