The Best GMC Repair in Greenville, NH

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

#1

Greenville Automotive & Tire

4.6
(85 reviews)
Verified

A long-standing, family-owned full-service garage that is the primary automotive service provider within Greenville itself. They are known for their honest diagnostics and ability to handle a wide range of repairs on domestic trucks, including GMC. While not a dedicated GMC specialist, they have the experience and local reputation for handling many of the requested services, particularly suspension, Ecotec engine work, and general towing package maintenance. For highly complex Duramax or Allison transmission issues, they may sublet to or consult with specialists, but they are the first and most trusted point of contact in Greenville.

16 Main St, Greenville, NH 03048

Specialties & Features

Ecotec engine diagnostics
Heavy-duty truck suspension
Towing package maintenance

Business Information

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

Monadnock Automotive

4.8
(240 reviews)
Verified

Located in the neighboring town of Peterborough (a 10-minute drive from Greenville), Monadnock Automotive is a highly reputable, state-of-the-art repair facility. They have multiple ASE Master Certified technicians and specifically advertise expertise with modern, complex vehicle systems, including diesel engines and advanced electronics. Their customer reviews consistently praise their technical knowledge, professionalism, and ability to diagnose and repair issues that other shops could not. They are a top-tier choice for GMC owners in the region.

528 Old Street Rd, Peterborough, NH 03458

Specialties & Features

Diesel engine service (Duramax)
Transmission repair (Allison
10-speed)
Denali luxury features and electronics

Business Information

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

R&R Transmissions & Auto Care

4.7
(180 reviews)
Verified

Based in nearby Milford (a 15-minute drive), R&R has built a formidable reputation specifically for transmission work, making them a premier destination for Allison transmission service and repair. Their expertise extends to the full powertrain, including Duramax diesel service and 4WD systems commonly found on GMC Sierra and Canyon trucks. They are a certified affiliate for several major parts manufacturers, ensuring quality repairs. For any transmission-related concern on a GMC, they are the regional expert.

444 Nashua St, Milford, NH 03055

Specialties & Features

Transmission repair (Allison
10-speed)
Duramax diesel service
4WD and towing system service

Business Information

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

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

** The GMC repair market serving Greenville, NH, is characterized by a reliance on a small number of high-quality, independent service providers rather than a high volume of dedicated dealerships or specialists within the immediate town. The local market is not saturated, which fosters strong competition based on reputation and technical competence rather than price alone. The average quality of service is high, as these businesses survive by building long-term trust within the community and surrounding region. Typical pricing for specialized services aligns with regional averages: diagnostic fees range from $125-$175, while labor rates are between $130-$165 per hour. Complex jobs like Allison transmission overhaul or Duramax injector replacement represent a significant investment, often costing several thousand dollars. For routine maintenance and less complex repairs, Greenville Automotive provides a convenient and trustworthy local option. For advanced diagnostics, diesel, transmission, and luxury electronic systems, residents of Greenville reliably look to the highly-rated specialists in neighboring Peterborough and Milford.

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 Greenville regulations and climate