Top 3 GMC Repair Shops in Carthage

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

#1

DeNoble GM Collision Center & Service

4.7
(180 reviews)
Verified

As the area's authorized General Motors dealership, this is the premier destination for GMC service. Their technicians are GM-certified and have direct access to the latest technical service bulletins, specialized tools, and genuine GM parts. They are best equipped to handle complex electronics, warranty work, and recalls on all GMC models, from Sierra HD to Yukon Denali.

800 29th St SE, Watertown, SD 57201

Specialties & Features

Duramax diesel service
Allison transmission repair
Denali luxury features and electronics

Business Information

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

Watertown Transmission & Auto Repair

4.6
(120 reviews)
Verified

A highly reputable independent shop with a strong focus on drivetrain and powertrain services. They have built their reputation on expert transmission rebuilds and diagnostics, making them a top choice for complex Allison transmission issues outside of the dealership. They are also well-versed in 4WD systems and diesel engine maintenance.

1000 9th Ave SE, Watertown, SD 57201

Specialties & Features

Allison transmission repair
4WD and towing system service
Diesel engine service

Business Information

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

Tuffy Tire & Auto Service Center

4.4
(90 reviews)
Verified

Part of a trusted national chain with rigorous corporate training and standards. This location offers a broad range of services with a particular strength in general diagnostics, suspension work, and routine maintenance. They are a solid choice for EcoTec engine diagnostics, towing package maintenance, and suspension work on GMC trucks and SUVs.

821 29th St SE, Watertown, SD 57201

Specialties & Features

Heavy-duty truck suspension
EcoTec engine diagnostics
Towing package maintenance

Business Information

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

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

** The GMC repair market serving Carthage, SD is concentrated in Watertown, which acts as the regional service hub. The market is characterized by a clear hierarchy. The authorized GM dealership (DeNoble) represents the top tier for factory-specific expertise, particularly for newer models, advanced electronics, and warranty-covered work. Pricing at this level is typically the highest, reflecting OEM parts and specialized training. The independent specialist shops, like Watertown Transmission, form a strong second tier, often offering competitive pricing and deep, hands-on expertise in specific complex systems like transmissions and diesel engines. They are a popular choice for older vehicles or for owners seeking an alternative to dealership rates. National chains like Tuffy provide a valuable third option, offering consistency, convenience, and competitive pricing for more routine services, diagnostics, and maintenance. The competition is healthy but not saturated, ensuring that quality shops maintain high standards to retain their reputation. For a Carthage resident, the choice often comes down to the specific service needed, balancing expertise, cost, and the convenience of the 30-mile drive to Watertown.

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 Carthage regulations and climate