The Best GMC Repair in Centenary, SC

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

#1

Marion Diesel & Auto Repair

4.7
(180 reviews)
Verified

A locally-owned and operated shop widely recognized as the area's leading expert in diesel performance and repair. They have built a strong reputation for complex diagnostics on modern Duramax engines and Allison transmissions, particularly for 2500/3500 series HD trucks used for towing and farming.

1202 N Main St, Marion, SC 29571

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

GMC of Florence

4.5
(250 reviews)
Verified

As the official GMC dealership for the region, this facility offers factory-trained technicians, genuine GM parts, and direct access to the latest technical service bulletins. They are the premier choice for warranty work, complex electronics, and maintaining the luxury features of Denali models.

2692 David McLeod Blvd, Florence, SC 29501

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Towing package maintenance

Business Information

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

Floyd's Automotive & Transmission

4.6
(140 reviews)
Verified

A family-owned shop known for its honest diagnostics and high-quality workmanship. While they service all makes and models, they have specific expertise in transmission rebuilds (including the 10-speed Allison) and 4WD system service, making them a trusted alternative to the dealership for complex driveline issues.

2002 S Irby St, Florence, SC 29505

Specialties & Features

Transmission repair (Allison
10-speed)
4WD and towing system service
General GMC diagnostics

Business Information

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

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

** The GMC repair market serving Centenary, SC, is characterized by a reliance on nearby commercial centers, primarily Marion and Florence. Due to the rural nature of the area and the prevalence of farming and towing, there is a high concentration of heavy-duty GMC trucks (Sierra 2500/3500) on the road. This creates a strong demand for specialists in diesel and transmission work. **Average Quality:** The quality is bifurcated. There are excellent, highly specialized independent shops (like Marion Diesel) that rival dealership expertise for specific mechanical systems, and the official dealership (GMC of Florence) which provides the highest level of OEM-specific technical support, especially for electronics. **Competition Level:** Competition is moderate but specialized. General mechanics are abundant, but shops with proven Duramax and Allison expertise are few and hold a significant market advantage. Customer loyalty is high for reputable specialists. **Typical Pricing:** Pricing is tiered. Dealership labor rates are the highest, typically 15-25% more than independents. Specialized independents command a premium over general repair shops but are often more cost-effective than the dealership for non-warranty mechanical work. Expect labor rates in the $110-$150/hour range for these top-tier specialists.

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 Centenary regulations and climate