Top 3 GMC Repair Shops in Fredericktown

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

#1

Fredericktown Marathon & Auto Service

4.7
(180 reviews)
Verified

A long-standing, trusted local full-service garage known for its honest diagnostics and ability to handle a wide range of repairs, from routine maintenance to complex engine and drivetrain work on domestic trucks. They have built a strong reputation for servicing the community's farming and light industrial vehicles.

100 Columbus Rd, Fredericktown, OH 43019

Specialties & Features

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

Business Information

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

Mt. Vernon GMC (Koenig Motors)

4.5
(250 reviews)
Verified

As the closest authorized GMC dealership, this is the premier destination for factory-trained technicians, genuine GM parts, and specialized diagnostic software. They are uniquely equipped to handle warranty work, complex electronics, and luxury features found in Denali models.

1500 Coshocton Ave, Mount Vernon, OH 43050

Specialties & Features

Denali luxury features and electronics
GMC factory diagnostics
Duramax diesel service

Business Information

Years in Business:50 years
Licensed:Yes
Insured:Yes
#3

S & S Truck & Equipment

4.8
(90 reviews)
Verified

Located just south of Fredericktown, S & S is a highly specialized heavy-duty truck and equipment repair center. They are the top choice for serious work on heavy-duty suspensions, aftermarket towing package installations, and major drivetrain repairs that are beyond the scope of a standard auto shop.

10601 Martinsburg Rd, Utica, OH 43080

Specialties & Features

Heavy-duty truck suspension
Duramax diesel service
custom towing package maintenance

Business Information

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

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

** The GMC repair market in Fredericktown, Ohio, reflects its semi-rural character. The local options are comprised of a few highly reputable, long-standing general repair shops (like Fredericktown Marathon) that possess broad mechanical knowledge and are capable of handling many GMC-specific issues, particularly with older models and common components like the Allison transmission. For more specialized needs—especially those involving proprietary Duramax diesel diagnostics, complex Denali electronics, or heavy-duty suspension work—residents typically look to providers in the wider Knox County area. Mount Vernon, as the county seat, hosts the authorized GMC dealership, which is the default for warranty work, recalls, and advanced computer systems. For the most heavy-duty and agricultural-focused repairs, specialized shops in surrounding towns like Utica fill a critical niche. Competition is moderate but specialized. Pricing is tiered: local shops offer competitive labor rates for general repairs, the dealership commands a premium for OEM parts and specialist time, and heavy-duty specialists fall in between, reflecting their niche expertise. The overall quality of service available to a Fredericktown GMC owner is high, provided they select the correct type of shop for their specific repair need.

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 Fredericktown regulations and climate