The Best GMC Repair in Castalia, OH

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

#1

M & M Auto & Truck Repair

4.8
(180 reviews)
Verified

A highly reputable, family-owned shop known for its deep expertise in diesel engines and transmission systems. They are a go-to for complex diagnostics and heavy-duty truck repairs, earning consistent praise for their honesty, quality workmanship, and ability to handle jobs that dealerships often struggle with.

2914 Cleveland Rd, Sandusky, OH 44870

Specialties & Features

Duramax diesel service
Allison transmission repair
heavy-duty truck suspension

Business Information

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

Firestone Complete Auto Care of Sandusky

4.4
(250 reviews)
Verified

While part of a national chain, this specific location has a strong local reputation and offers a wide range of services backed by national training and certification programs. They are a reliable choice for routine and complex service on GMC trucks, including transmission service, suspension work, and electronic diagnostics.

3404 Milan Rd, Sandusky, OH 44870

Specialties & Features

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

Business Information

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

North Coast Auto Repair

4.7
(90 reviews)
Verified

A well-regarded independent shop known for its personalized service and technical competence. They handle a significant volume of domestic truck and SUV work, with strong capabilities in 4WD system service, engine diagnostics, and general maintenance. Their smaller size often translates to more direct communication with the technician.

2317 Cleveland Rd, Sandusky, OH 44870

Specialties & Features

4WD and towing system service
EcoTec engine diagnostics
general GMC maintenance

Business Information

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

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

** The GMC repair market for Castalia residents is effectively an extension of the Sandusky, Ohio market. As a small community, Castalia itself does not host dedicated GMC or diesel specialty shops. Therefore, residents are served by a competitive and capable market in nearby Sandusky. The competition is healthy, comprising a mix of long-standing independent shops (like M & M) and established national service centers (like Firestone). The average quality of service is high, with several shops demonstrating specific expertise in the complex systems of GMC trucks, particularly the Duramax/Allison powertrain common in the region due to its popularity for towing and recreational use. Pricing is competitive with, and often more affordable than, the nearest GMC dealerships located in larger cities like Lorain or Toledo. For highly specialized Denali electronics or advanced transmission programming, some shops may sublet to or recommend the dealership, but the top local independents are fully equipped for the vast majority of mechanical and diagnostic needs. Customers generally report high satisfaction, valuing the independent shops' personalized service and lower labor rates compared to dealerships.

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 Castalia regulations and climate