The Best GMC Repair in Fremont, NH

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

#1

J&R Automotive & Transmission Specialists

4.8
(180 reviews)
Verified

A family-owned and operated business with a stellar reputation for complex transmission and drivetrain work. They are widely regarded as the top specialists for Allison transmissions in the region and have extensive experience with heavy-duty truck suspensions and 4WD systems common on GMC Sierra and Canyon models.

12 Industrial Way, Rochester, NH 03867

Specialties & Features

Allison transmission repair
4WD system service
heavy-duty suspension

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Exeter Automotive Associates

4.7
(250 reviews)
Verified

Known for their diagnostic expertise and high-quality customer service. They have multiple ASE Master Technicians on staff and have built a strong reputation for handling both mechanical and electronic issues, making them a great choice for EcoTec engine diagnostics and Denali luxury feature concerns.

45 Portsmouth Avenue, Exeter, NH 03833

Specialties & Features

EcoTec engine diagnostics
Denali electronics
general GMC service
repair

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

Granite State Diesel & 4x4

4.6
(90 reviews)
Verified

As the name implies, this shop focuses specifically on diesel performance and repair, as well as 4x4 systems. They are the go-to experts for Duramax diesel service, including performance tuning and emissions-related repairs. They also have extensive experience with towing package maintenance and installation.

8 Pickpocket Road, Brentwood, NH 03833

Specialties & Features

Duramax diesel service
towing package maintenance
4x4 lift kits
off-road preparation

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market serving Fremont, NH, is characterized by a reliance on high-quality independent shops in neighboring towns rather than a high-volume of dealership options directly within the small town. The competition is strong among these independents, driving a high standard of quality and specialization. Customers in this area typically own trucks for both work and recreation, leading to a high demand for the specific specialties listed, particularly diesel, transmission, and 4WD services. - **Average Quality:** The top-tier independent shops are exceptionally high quality, often surpassing dealership service departments in specific technical areas like transmission rebuilds or diesel performance. - **Competition Level:** Moderate to high among independents. Shops differentiate themselves by developing a niche expertise (e.g., transmissions at J&R, diesel at Granite State). - **Typical Pricing:** Pricing is competitive but reflects the high level of expertise. Labor rates are generally 10-20% lower than a metropolitan-area GM dealership, but specialized work (e.g., Duramax injector replacement, Allison transmission overhaul) remains a significant investment due to parts costs and labor intensity. Customers report strong value for money due to the direct expertise and personalized service.

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 Fremont regulations and climate