The Best GMC Repair in Cosby, TN

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

#1

Newport Transmission & Auto Repair

4.7
(180 reviews)
Verified

A long-standing, family-owned shop known for its deep expertise in complex drivetrain systems. They are the go-to specialists in Cocke County for Allison transmissions and Duramax diesel performance, with a strong reputation for diagnosing and repairing issues that other shops cannot. They service a large number of heavy-duty GMC trucks used for farming and towing in the area.

434 Prospect Ave, Newport, TN 37821 (Approx. 15-20 min from Cosby)

Specialties & Features

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

Business Information

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

Sevierville GMC (Service Department)

4.5
(250 reviews)
Verified

As the local authorized GMC dealership, their service department offers the highest level of factory-specific training and access to the latest technical service bulletins and diagnostic equipment. This is the premier choice for complex electronics, Denali luxury feature repairs, warranty work, and new model diagnostics, including EcoTec3 and EcoTec3 engines.

1650 Parkway, Sevierville, TN 37862 (Approx. 25-30 min from Cosby)

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Factory towing package maintenance

Business Information

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

Mountain View Auto & Diesel Repair

4.6
(120 reviews)
Verified

A highly-rated independent shop that has built a strong reputation for honest service and technical competence on both gas and diesel engines. They are particularly noted for their work on suspension systems for heavy-duty GMC trucks, often used for lifting or leveling kits, and for their comprehensive diesel service capabilities.

125 W Main St, Sevierville, TN 37862 (Approx. 25 min from Cosby)

Specialties & Features

Heavy-duty truck suspension
Duramax diesel service
General GMC diagnostics and repair

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market servicing Cosby, TN, is characterized by a reliance on reputable providers in the neighboring commercial centers of Newport and Sevierville. Cosby itself, being a smaller mountain community, does not host a dedicated GMC specialist but benefits from its proximity to these hubs. * **Average Quality:** The quality of service is generally high, with several shops boasting long-term reputations and loyal local customer bases. The presence of a factory dealership (Sevierville GMC) sets a high bar for technical proficiency on complex electronic systems. * **Competition Level:** Competition is healthy but not oversaturated. Shops tend to compete on specific niches—Newport Transmission on drivetrain mastery, the dealership on factory certification and luxury features, and independents like Mountain View on personalized service and specialized areas like suspension. * **Typical Pricing:** Pricing follows a standard tiered structure. The dealership (Sevierville GMC) typically commands the highest labor rates due to factory overhead and specialized tools. Independent specialists (Newport Transmission, Mountain View) offer competitive, often lower, labor rates while providing expert-level service, making them a high-value proposition for out-of-warranty vehicles. Parts pricing is relatively consistent across the market.

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 Cosby regulations and climate