The Best GMC Repair in Brunswick, TN

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

#1

Wilson County GMC

4.5
(280 reviews)
Verified

As the area's authorized GMC dealership, Wilson County GMC offers the highest level of factory-specific training, tools, and original parts. Their master technicians are certified to work on the entire range of GMC vehicles, from the Sierra 1500 with EcoTec3 engines to the heavy-duty 3500 Denali with Duramax and Allison systems. They are the premier choice for complex electronic diagnoses, warranty work, and maintaining Denali luxury features.

1000 Murfreesboro Rd, Lebanon, TN 37090

Specialties & Features

Duramax diesel service
Denali electronics
features
Allison transmission repair

Business Information

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

Diesel Specialist Inc.

4.8
(150 reviews)
Verified

A highly respected, independent shop focused exclusively on diesel performance and repair. They are the go-to experts for complex Duramax engine diagnostics, performance tuning, and major repairs that go beyond typical dealership service. Their technicians have deep, hands-on experience with the LB7, L5P, and other Duramax generations, and they are equally proficient with the paired Allison transmissions.

5096 Old Harding Rd, Nashville, TN 37211

Specialties & Features

Duramax diesel service
Allison transmission rebuild
Heavy-duty towing package maintenance

Business Information

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

Bryant's Automotive

4.7
(90 reviews)
Verified

A well-established, family-owned auto repair shop known for its exceptional customer service and high-quality workmanship. While not exclusively a diesel shop, they have developed a strong reputation for proficiency with GM trucks, including transmission service (Allison and newer 10-speed), EcoTec engine diagnostics, and 4WD system repair. They are an excellent choice for reliable, trustworthy service on a wide range of GMC models.

508 W Main St, Hendersonville, TN 37075

Specialties & Features

Allison
10-speed transmission repair
4WD system service
EcoTec engine diagnostics

Business Information

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

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

** The GMC repair market servicing Brunswick, TN, is characterized by a need for residents to travel to larger neighboring cities for specialized service. Brunswick itself lacks dedicated GMC specialists, creating a "hub-and-spoke" model where shops in Lebanon, Hendersonville, and Nashville capture the regional demand. **Average Quality & Competition:** The quality of service is bifurcated. Authorized dealerships like Wilson County GMC offer OEM-grade repairs and warranties but often at a premium price. Independent specialists like Diesel Specialist Inc. and reputable generalists like Bryant's Automotive provide high-quality, often more personalized service, frequently at a more competitive rate. This creates healthy competition focused on expertise and customer retention rather than price alone. **Typical Pricing:** Pricing tiers are clear. Dealerships command the highest labor rates ($150-$180/hr). Specialized independent diesel shops are similarly priced due to their niche expertise. General repair shops with strong GM credentials offer the most competitive labor rates ($110-$140/hr). For a complex job like a Duramax injector replacement or an Allison transmission service, consumers have a meaningful choice between different types of qualified providers.

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 Brunswick regulations and climate