The Best GMC Repair in Amherst, NH

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

#1

Merrimack County Diesel & Auto

4.8
(240 reviews)
Verified

Widely regarded as the premier specialist for GM diesel trucks in Southern New Hampshire. They are not a general repair shop but a dedicated diesel and drivetrain expert. Their technicians have deep, factory-level knowledge of the Duramax/Allison powertrain and are equipped to handle everything from routine maintenance to complex diagnostics and major repairs. They are the go-to for heavy-duty towing, performance, and reliability.

284 Daniel Webster Hwy, Boscawen, NH 03303

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

AutoFair GMC of Nashua

4.6
(180 reviews)
Verified

As an official GMC dealership, this facility offers the highest level of brand-specific certification and access to the latest technical service bulletins, specialized tools, and genuine GM parts. This is the optimal choice for warranty work, complex electronics, Denali luxury feature repairs, and factory-recalled components. Their service department is trained specifically on the entire GMC lineup.

101 Main Dunstable Rd, Nashua, NH 03062

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Towing package maintenance

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

Bedford Auto Repair & Tire

4.7
(190 reviews)
Verified

A highly reputable, family-owned independent shop known for its technical expertise and exceptional customer service. While they service all makes, they have developed a strong reputation for proficiency with GM vehicles, including SUVs and trucks. They excel in general maintenance, 4WD system service, transmission work, and providing honest diagnostics for complex issues, often at a more competitive rate than the dealership.

314 Route 101, Bedford, NH 03110

Specialties & Features

4WD and towing system service
Transmission repair
EcoTec engine diagnostics

Business Information

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

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

** The GMC repair market servicing Amherst, NH, is characterized by high-quality, specialized options rather than a high volume of general mechanics. Due to Amherst's affluent and rural character, there is significant demand for competent service for trucks, SUVs, and vehicles used for towing and recreation. This has fostered a competitive environment where shops must demonstrate specific expertise—particularly in diesel engines and 4WD systems—to thrive. * **Average Quality:** The average quality of shops *specializing* in GMC repair is high. Customers expect and receive a premium level of service. * **Competition Level:** Competition is moderate but focused. There are few direct competitors at the specialist level (like Merrimack County Diesel), but they compete with dealerships (like AutoFair GMC) and high-end independents (like Bedford Auto Repair) on service quality, price, and convenience. * **Typical Pricing:** Pricing is in the upper tier for the region. Dealerships command the highest labor rates, followed by dedicated specialists, and then high-quality independents. For complex diesel or transmission work, customers are generally willing to pay a premium for proven expertise, making the specialists highly competitive despite their rates. A basic service will be moderately priced, while specialized repairs (e.g., Duramax injector replacement, Allison transmission overhaul) are significant investments, reflecting the complexity of the vehicles.

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 Amherst regulations and climate