The Best GMC Repair in Sherman, CT

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

#1

New Milford Auto Care

4.8
(240 reviews)
Verified

A highly reputable, family-owned auto service center known for its honest diagnostics and high-quality work. They have master technicians on staff with extensive experience with American brands, particularly GMC and its complex drivetrain and electronic systems. They are a top choice for Sherman residents seeking expert care without the dealership price tag.

25 Danbury Rd, New Milford, CT 06776

Specialties & Features

Duramax diesel service
EcoTec engine diagnostics
Denali electronics
luxury features

Business Information

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

New Milford Transmission & Auto Repair

4.6
(180 reviews)
Verified

As the name implies, this shop specializes in transmission systems, making them a go-to expert for the robust Allison transmissions found in GMC HD trucks. They also provide comprehensive service for 4WD systems, differentials, and towing components, ensuring your truck is ready for heavy-duty work.

52 Park Lane Rd, New Milford, CT 06776

Specialties & Features

Allison transmission repair
4WD and towing system service
heavy-duty truck suspension

Business Information

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

GMC Danbury (Crowley GMC)

4.3
(290 reviews)
Verified

The authorized GMC dealership for the region. This is the premier destination for repairs requiring factory-specific tools, software, and technical service bulletins. Their technicians are GMC-certified and have direct access to the latest training, making them the best choice for complex electronics, warranty work, and Denali-specific luxury feature repairs.

99 Federal Rd, Danbury, CT 06810

Specialties & Features

Denali luxury features and electronics
factory towing package maintenance
GMC factory warranty service

Business Information

Years in Business:50 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market servicing Sherman, CT, is characterized by high-quality, specialized independent shops in nearby New Milford, complemented by a well-established dealership in Danbury. Due to Sherman's affluent and rural nature, there is a significant population of well-maintained GMC trucks, SUVs, and Denali models, creating a demand for expert-level service. **Competition Level:** Moderate. While there are several general auto repair shops, true specialists in Duramax and Allison systems are limited, giving the top providers a strong market position. The dealership maintains a monopoly on factory-authorized services. **Average Quality:** The quality is generally high, with independent shops competing on personalized service, deeper mechanical expertise on older models, and lower labor rates, while the dealership offers the assurance of factory-certified technicians and OEM parts for newer, technology-heavy vehicles. **Typical Pricing:** Pricing is competitive for the region. Independent specialists typically charge $120-$150/hour, while the dealership rates are higher, often $160-$190/hour. For major services like transmission overhaul or diesel injector replacement, customers can expect estimates in the $3,000 - $7,000+ range, depending on the vehicle and the extent of the repair.

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 Sherman regulations and climate