The Best GMC Repair in Sullivan, ME

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

#1

Ellsworth Service Center

4.7
(185 reviews)
Verified

A highly reputable, family-owned service center known for its technical expertise with modern, complex vehicle systems. They are a top-tier independent shop that invests in advanced diagnostic tools and technician training, making them a go-to for GMC Duramax, Allison transmission, and electronic system repairs that go beyond the capability of a standard mechanic.

26 State St, Ellsworth, ME 04605

Specialties & Features

Duramax diesel service
Allison transmission repair
Advanced electronics diagnostics

Business Information

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

S & S Truck & Auto

4.5
(90 reviews)
Verified

Located right in Sullivan, this is the most relevant local option specializing in larger vehicles. They have a strong reputation for honest work on trucks and SUVs, with specific expertise in suspension, 4WD systems, and towing-related maintenance. They are the preferred local choice for routine and heavy-duty mechanical work on GMC Sierras and Yukons.

1794 US-1, Sullivan, ME 04664

Specialties & Features

4WD and towing system service
Heavy-duty truck suspension
EcoTec engine diagnostics

Business Information

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

Hancock County Automotive

4.6
(140 reviews)
Verified

An established, full-service shop in neighboring Ellsworth that provides comprehensive care for domestic trucks and SUVs. They are known for their systematic approach to diagnostics and repair, making them a reliable choice for persistent issues with EcoTec engines, transmission shifting concerns, and integrating towing package components.

57 Main St, Ellsworth, ME 04605

Specialties & Features

Transmission repair
EcoTec engine diagnostics
Towing package maintenance

Business Information

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

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

** The GMC repair market in the Sullivan, Maine area is characterized by a few highly capable independent shops that have earned strong community trust, rather than a high number of competitors. There is no dedicated GMC dealership in Sullivan itself; the closest would be in Bangor, approximately a 30-minute drive. This void is filled by the established independents in Ellsworth and the local specialist in Sullivan. **Average Quality:** The quality of service is generally high among the top-tier providers, as they compete on reputation and technical capability rather than price alone. They are accustomed to working on the trucks and SUVs common in this region. **Competition Level:** Moderate. While there are several general auto repair shops, only a handful have the specific tooling, software, and technician expertise to properly diagnose and repair complex GMC systems like Duramax engines and Denali electronics. This specialization creates a niche with less direct competition. **Typical Pricing:** Labor rates are competitive for rural Maine, typically ranging from **$110 - $150 per hour**. This is generally lower than dealership rates but reflects the expertise required. Specialized diesel or transmission work will be at the higher end of this scale. Parts pricing is market-standard.

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 Sullivan regulations and climate