Top 3 GMC Repair Shops in Dupont

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

#1

Mountain States GMC

4.7
(280 reviews)
Verified

A premier, family-owned service center with a long-standing reputation for specializing in American trucks, particularly GMC. They operate a state-of-the-art facility with advanced diagnostics for both diesel and gasoline engines. Their technicians are known for their deep expertise in complex electrical systems found in Denali trims and modern towing packages.

1245 Industrial Blvd, Thornton, CO 80241 (Approx. 4 miles from Dupont)

Specialties & Features

Duramax diesel service
Denali electronics
infotainment
heavy-duty suspension lifts

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Precision Diesel & Drivetrain

4.8
(190 reviews)
Verified

As the name implies, this shop is a pure specialist focused on the powertrain and drivetrain components critical to GMC trucks. They are the go-to experts for complex Allison transmission rebuilds, 10-speed diagnostics, and 4WD transfer case service. They are highly recommended for trucks used for heavy towing and commercial purposes.

8801 Washington St, Thornton, CO 80229 (Approx. 3 miles from Dupont)

Specialties & Features

Allison transmission repair
4WD
towing system service
Duramax performance tuning

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

Northglenn AutoPro

4.5
(160 reviews)
Verified

A well-established, full-service automotive repair shop with a dedicated GMC and Chevrolet truck division. They excel at general maintenance, EcoTec engine diagnostics, and comprehensive vehicle care. They are praised for their honest diagnostics, fair pricing, and expertise in maintaining factory towing packages and addressing common electrical gremlins.

2150 W 104th Ave, Northglenn, CO 80234 (Approx. 2 miles from Dupont)

Specialties & Features

EcoTec engine diagnostics
towing package maintenance
general GMC service
repair

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market in the Dupont/ North Denver metro area is highly competitive and of above-average quality. The prevalence of outdoor recreation, construction, and commercial industries in Colorado creates a strong demand for skilled truck specialists. Shops that excel in diesel (Duramax) and transmission (Allison) service are particularly valued and can command premium pricing due to the complexity of the work. Consumers have a good selection of options, ranging from dedicated diesel performance shops (like Precision Diesel) to full-service generalists with GMC expertise (like Northglenn AutoPro). Typical pricing is in line with a major metropolitan area, with diagnostic fees ranging from $150-$200 and labor rates between $130-$180 per hour. The market rewards reputation and technical specialization, with the top shops maintaining long wait times for appointments, a testament to their high demand and trusted status.

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 Dupont regulations and climate