The Best GMC Repair in Madison, NH

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

#1

Proulx Oil & Gas

4.7
(180 reviews)
Verified

A highly reputable, long-standing family business known for its deep expertise in diesel engines and heavy-duty truck service. While they serve a broad range of vehicles, their work on Duramax diesel engines is particularly well-regarded by the local community, including commercial and private truck owners.

2166 White Mountain Hwy, North Conway, NH 03860 (Approx. 10 miles from Madison)

Specialties & Features

Duramax diesel service
Heavy-duty truck suspension
Towing package maintenance

Business Information

Years in Business:40 years
Licensed:Yes
Insured:Yes
#2

Conway Automotive

4.6
(220 reviews)
Verified

A full-service automotive repair center with a strong reputation for comprehensive diagnostics and transmission work. They are known for their skilled technicians who handle complex electrical and electronic systems, making them a solid choice for Denali models and modern engine computers.

1847 White Mountain Hwy, North Conway, NH 03860 (Approx. 8 miles from Madison)

Specialties & Features

EcoTec engine diagnostics
Transmission repair
Denali luxury features and electronics

Business Information

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

AutoServ of Tilton

4.5
(280 reviews)
Verified

While a longer drive from Madison, AutoServ is a regional powerhouse with multiple locations and a reputation for professional, high-volume service. They have specific technicians trained on GM products and offer a wide range of services, including dedicated 4WD and transmission work. Their warranty on repairs is a significant plus.

66 Laconia Rd, Tilton, NH 03276 (Approx. 35 miles from Madison)

Specialties & Features

Allison transmission repair
4WD system service
Comprehensive GMC maintenance

Business Information

Years in Business:30 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market in the immediate Madison, NH area is characteristic of a rural New England town: there are no dedicated GMC dealerships within the town limits, and specialized service is provided by a network of highly competent, independent repair shops in neighboring commercial hubs like North Conway. * **Average Quality:** The quality is generally high, with shops building their reputation on long-term trust and word-of-mouth rather than corporate marketing. Technicians are often long-term residents with deep local knowledge. * **Competition Level:** Competition is moderate. While there are several general auto repair shops, only a few have the specific equipment, training, and reputation to be considered "specialists" for complex GMC systems like Duramax diesel or Allison transmissions. This allows the top shops to command a premium for their expertise. * **Typical Pricing:** Pricing is competitive but reflects the specialized nature of the work. Labor rates are typically in the $120-$150/hour range for these top-tier specialists. Diesel and transmission work will be at the higher end of this scale. Customers should expect to pay a premium for genuine GM parts, which these reputable shops are more likely to use.

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 Madison regulations and climate