Top 3 GMC Repair Shops in Marine

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

#1

Cope's Auto & Truck Service Center

4.7
(180 reviews)
Verified

A long-standing, family-owned business with an exceptional reputation for servicing both light and heavy-duty vehicles. They are known for their deep technical expertise, particularly with diesel engines and complex drivetrain systems. Their large facility is well-equipped to handle everything from routine GMC maintenance to major engine and transmission overhauls.

1217 9th St, Highland, IL 62249

Specialties & Features

Duramax diesel service
Allison transmission repair
heavy-duty truck suspension

Business Information

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

Highland Tire & Auto Service

4.5
(150 reviews)
Verified

A well-respected, full-service shop that is a staple in the Highland community. They have multiple ASE-certified technicians and invest in ongoing training. They offer comprehensive diagnostics and repair services, with a strong focus on domestic trucks and SUVs, making them a reliable choice for GMC owners.

1304 Walnut St, Highland, IL 62249

Specialties & Features

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

Business Information

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

Grantfork Service Center

4.8
(90 reviews)
Verified

A highly-rated, smaller shop located a short drive north of Marine. They have built a loyal customer base through personalized service, honesty, and strong technical problem-solving skills. They are an excellent choice for diagnostics, electrical issues, and mechanical repairs on GMC trucks and SUVs.

11941 State Rte 143, Grantfork, IL 62249

Specialties & Features

Transmission repair
electronics 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 Marine

** The GMC repair market for residents of Marine, Illinois, is characterized by a reliance on service providers in neighboring towns, primarily Highland. There are no dedicated GMC-only specialists within Marine itself. The competition level is moderate, with a handful of highly reputable, long-standing shops dominating the market. These businesses compete on reputation, specialized expertise (especially in diesel and transmission work), and personalized customer service rather than price. Typical pricing is in line with regional averages for Southern Illinois. For standard services like oil changes and brake jobs, prices are competitive. However, for specialized work on Duramax engines or Allison transmissions, labor rates are premium, reflecting the required expertise and diagnostic equipment. Customers generally report high satisfaction with the quality of work, valuing the shops' longevity and deep roots in the community as indicators of trustworthiness. For complex Denali electronics or warranty work, most customers are still directed to the nearest franchised GMC dealerships located in larger cities like Fairview Heights or O'Fallon.

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 Marine regulations and climate