The Best GMC Repair in Ashmore, IL

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

#1

Mattoon Automotive & Diesel

4.8
(180 reviews)
Verified

A family-owned and operated shop renowned for its deep expertise in both gasoline and diesel powertrains. They are the go-to specialists in the region for complex diagnostics and repair on modern GMC trucks, particularly praised for their work on Duramax engines and Allison transmissions. They invest in advanced diagnostic tools and have a reputation for honest, thorough service.

2001 Broadway Ave, Mattoon, IL 61938

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

Certified Auto Repair & Performance

4.6
(120 reviews)
Verified

Known for tackling complex electrical and performance issues, this shop excels with GMC Denali models and their sophisticated electronics. Their technicians are proficient with the latest GMC towing systems and 4WD components. They also have a strong focus on the GM EcoTec engine family found in smaller GMC SUVs and trucks.

1505 Wabash Ave, Charleston, IL 61920

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Towing package maintenance

Business Information

Years in Business:8 years
Licensed:Yes
Insured:Yes
#3

T & J Service Center

4.7
(90 reviews)
Verified

A long-standing, trusted local business with deep roots in the community. While a full-service garage, they have developed a strong reputation for reliability in transmission work and 4WD system service on American trucks. They are a preferred choice for routine but critical maintenance on towing systems and suspension components for work trucks and daily drivers.

1106 18th St, Charleston, IL 61920

Specialties & Features

Transmission repair
4WD system service
Towing system maintenance

Business Information

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

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

** The GMC repair market for Ashmore residents is characterized by high reliance on service providers in neighboring commercial hubs like Mattoon and Charleston. There are no dedicated GMC-only specialty shops within Ashmore itself. The competitive landscape is moderate, with a handful of highly reputable shops dominating the market for specialized truck repair. The average quality of service is high, as these established businesses compete on reputation, technical expertise, and customer service rather than price alone. Typical pricing is in line with regional averages for downstate Illinois. Standard diagnostic fees range from $120-$150. Labor rates are typically between $95-$130 per hour. Specialized work, particularly on Duramax diesel engines or Allison transmissions, commands a premium due to the required expertise and equipment. Customers generally report high satisfaction with the technical capabilities of the top shops, valuing the convenience of having expert-level service within a short driving distance from Ashmore.

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 Ashmore regulations and climate