Top 3 GMC Repair Shops in Sunapee

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

#1

P&M Service Center

4.7
(180 reviews)
Verified

A highly respected, family-owned auto and truck service center known for its technical expertise and honest service. They have a strong reputation for handling complex diagnostics and repairs on domestic trucks, including modern GMC models with advanced diesel and transmission systems. Their technicians are ASE Certified, and they invest in high-level diagnostic equipment.

385 Sunapee St, Newport, NH 03773

Specialties & Features

Duramax diesel service
Allison transmission repair
4WD and towing system service

Business Information

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

Pillsbury's Service Center

4.6
(150 reviews)
Verified

A well-established, full-service garage with a long history of serving the Lake Sunapee region. They are known for their reliable work on a wide range of vehicles, with a significant portion of their business dedicated to SUVs and trucks. They receive consistent praise for their diagnostic capabilities and customer service, making them a trusted choice for GMC owners, including those with Denali trim and EcoTec engines.

251 Main St, New London, NH 03257

Specialties & Features

EcoTec engine diagnostics
heavy-duty truck suspension
general GMC maintenance

Business Information

Years in Business:40 years
Licensed:Yes
Insured:Yes
#3

Pug's Pit Stop

4.5
(90 reviews)
Verified

A smaller, highly-rated local shop known for its personalized service and strong mechanical skills. While they handle all types of repairs, they have developed a niche expertise with GM vehicles. They are a go-to for routine maintenance, brake and suspension work, and electrical diagnostics for GMC trucks and SUVs, often at a more accessible price point than larger shops.

167 Sunapee St, Newport, NH 03773

Specialties & Features

Towing package maintenance
general mechanical repair
electrical system diagnostics

Business Information

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

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

** The GMC repair market in the Sunapee region is characterized by a small number of high-quality, independent shops rather than a high volume of competition. There is no dedicated GMC dealership in Sunapee itself, which shifts demand to experienced local mechanics. The average quality of service is notably high, as these businesses rely heavily on long-term community reputation and word-of-mouth referrals. The competition level is moderate; while there aren't dozens of shops, the existing providers are well-established and technically proficient. Pricing is typically in line with New England averages, with labor rates generally lower than dealerships but reflective of the high skill level required for complex diesel and transmission work. For specialized services like Duramax or Allison repairs, P&M Service Center is the clear market leader. For general maintenance and diagnostics on models like the Terrain or Acadia, Pillsbury's and Pug's Pit Stop are excellent, trusted alternatives. Customers in this market prioritize trustworthiness and expertise over price-shopping.

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 Sunapee regulations and climate