The Best GMC Repair in Mayesville, SC

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

#1

Sumter Diesel & Auto Repair

4.7
(180 reviews)
Verified

A highly-rated, independent shop known for its expertise in diesel engine performance and repair, making it the go-to location for Duramax service in the region. They also provide comprehensive general auto repair with a strong reputation for honest diagnostics and quality workmanship on both domestic and import vehicles.

2460 Broad St, Sumter, SC 29150

Specialties & Features

Duramax diesel service
Allison transmission service
Heavy-duty truck suspension

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#2

Certified Auto Repair

4.8
(240 reviews)
Verified

This shop has built a stellar reputation for its technical expertise and customer service. While not exclusively a diesel shop, their technicians are proficient with a wide range of GMC vehicles, including complex electrical and transmission systems. They are a trusted name for both routine maintenance and major repairs.

1190 N Guignard Dr, Sumter, SC 29150

Specialties & Features

EcoTec engine diagnostics
Transmission repair
Towing package maintenance

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#3

Freedom GMC of Sumter (Service Department)

4.4
(290 reviews)
Verified

As the official GMC dealership for the area, this is the only provider with factory-certified GMC technicians and direct access to the latest tools, software, and OEM parts. This is the premier choice for warranty work, complex electronics, Denali luxury feature repairs, and recalls.

1990 W Wesmark Blvd, Sumter, SC 29150

Specialties & Features

Denali luxury features and electronics
GMC factory-certified service
Allison
10-speed transmission repair

Business Information

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

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

** The GMC repair market serving Mayesville is centralized in the larger commercial hub of Sumter, SC, approximately a 15-minute drive away. Due to Mayesville's small size, there is no local competition for specialized GMC repair within the town itself. The market in the greater Sumter area is moderately competitive, with a clear distinction between the factory-backed dealership and several high-quality independent shops. * **Average Quality:** The quality of service is generally high, with multiple shops boasting ratings of 4.4 stars and above. The independent shops compete on personalized service, specialized diesel expertise, and often more competitive labor rates, while the dealership competes on factory training, OEM parts, and brand-specific technology. * **Competition Level:** Moderate. Customers have a meaningful choice between the dealership for brand-pure service and independents for specialized or cost-effective repairs. There are no "corporate" chain competitors (like Pep Boys) that specialize in this level of truck service. * **Typical Pricing:** Labor rates follow a tiered structure. Independent shops typically range from **$110 - $140 per hour**. The dealership (Freedom GMC) commands a premium, with rates typically between **$150 - $170 per hour**. Parts pricing will also be higher at the dealership but guarantees OEM fit and finish. For a Mayesville resident, the choice often comes down to the specific repair need: complex electronics and warranty to the dealership, diesel and transmission expertise to a specialist like Sumter Diesel, and general mechanical excellence to a top-tier independent like Certified Auto 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 Mayesville regulations and climate