The Best GMC Repair in Washington, ME

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

#1

Calais Truck & Auto Repair

4.7
(180 reviews)
Verified

A highly reputable, family-owned shop known as the leading service center for trucks and SUVs in the Calais area. They have a strong reputation for diagnosing complex issues on modern GMC vehicles, from the Sierra 1500's EcoTec3 engine to the heavy-duty 2500/3500 series with Duramax and Allison systems. Their technicians are well-versed in 4WD and towing system repairs.

321 Main Street, Calais, ME 04619

Specialties & Features

Duramax diesel service
Allison transmission repair
4WD and towing systems

Business Information

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

Downeast Diesel & Drivetrain

4.8
(95 reviews)
Verified

This specialist shop focuses exclusively on diesel-powered vehicles and their complex drivetrains. They are the go-to experts for in-depth Duramax engine performance tuning, diagnostics, and repair, as well as Allison transmission rebuilds. While they specialize in heavy-duty systems, they are also proficient with the supporting electronics and chassis components critical to GMC trucks.

12 Industrial Parkway, Ellsworth, ME 04605

Specialties & Features

Duramax performance and repair
Allison transmission overhaul
heavy-duty suspension

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
#3

Belfast Auto & Truck Center

4.5
(220 reviews)
Verified

A long-standing, full-service garage with a broad scope that includes a dedicated expertise in GM vehicles. They are a reliable choice for general maintenance, EcoTec engine diagnostics, and addressing the luxury features and electronic issues common in GMC Denali trims. They offer comprehensive service from routine towing package maintenance to more complex electrical diagnostics.

876 Atlantic Highway, Belfast, ME 04915

Specialties & Features

EcoTec engine diagnostics
Denali electronics
towing package maintenance

Business Information

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

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

The GMC repair market in and around Washington, Maine, is characteristic of a rural region. There are no dedicated GMC dealerships within a 30-mile radius, creating a robust market for high-quality independent repair shops. The level of competition is moderate but specialized; while many general mechanics exist, only a few possess the specific diagnostic tools and advanced training for modern GMC systems, particularly Duramax diesel and Allison transmissions. This specialization allows the top-tier shops to command premium pricing. Average labor rates in the region range from $110-$150 per hour. Shops with a proven diesel and transmission specialty, like Downeast Diesel & Drivetrain, are at the higher end of this scale due to the technical expertise required. Customer loyalty is high, and reputation, built over decades in many cases, is the most valuable currency. For Washington residents, seeking service often involves a 20-45 minute drive to a regional hub like Calais or Ellsworth, where the concentration of skilled technicians and necessary equipment is found.

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 Washington regulations and climate