The Best GMC Repair in Manassas, VA

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

#1

Koons Manassas GMC

4.5
(850 reviews)
Verified

As the official GMC dealership in Manassas, Koons offers the highest level of factory-trained technicians, genuine GM parts, and direct access to the latest technical service bulletins and diagnostic software. They are the premier destination for complex electrical issues, warranty work, and maintaining factory specifications, especially for Denali models and new-generation vehicles.

8800 Sudley Rd, Manassas, VA 20109

Specialties & Features

Denali luxury/electronics
EcoTec engine diagnostics
Allison/10-speed transmission service

Business Information

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

Manassas Auto Care (Formerly C & C Auto)

4.8
(180 reviews)
Verified

A highly reputable independent shop with deep roots in the community. They have built a strong reputation for expertise in American trucks, particularly GMC and Chevrolet. Their technicians are experienced with Duramax diesel systems, Allison transmissions, and heavy-duty suspensions, offering dealer-level expertise often at a more competitive labor rate.

8738 Signal Hill Rd, Manassas, VA 20110

Specialties & Features

Duramax diesel service
Heavy-duty truck suspension
Allison transmission repair

Business Information

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

Sudley Auto Repair

4.7
(140 reviews)
Verified

A well-regarded, family-owned shop known for its honest diagnostics and high-quality workmanship. They specialize in comprehensive service on SUVs and trucks, making them an excellent choice for GMC Yukon/XL, Sierra, and Canyon owners. Their services cover the full spectrum from routine maintenance on EcoTec engines to 4WD system service and towing package upkeep.

8428 Centreville Rd, Manassas, VA 20110

Specialties & Features

4WD and towing system service
EcoTec engine diagnostics
General GMC maintenance
repair

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market in Manassas is robust and competitive, reflecting the area's high ownership of trucks and SUVs. The market is bifurcated between the **authorized dealership (Koons)** and a strong contingent of **highly capable independent shops**. * **Average Quality:** The quality is generally high, with several shops demonstrating specific expertise that rivals dealership service departments. Customers have excellent options for both premium, warranty-backed service and high-value, specialized independent repair. * **Competition Level:** Competition is strong, which benefits the consumer. Independents compete on personalized service and price, while the dealership leverages its OEM authority, specialized tools, and brand affiliation. Shops that specialize in diesel and transmission work are particularly sought after. * **Typical Pricing:** Pricing follows the standard tiered model. The dealership (Koons) typically commands the highest labor rates. Specialized independents (like Manassas Auto Care) are generally 15-25% less expensive on labor while using high-quality aftermarket or OEM parts. General maintenance shops (like Sudley Auto Repair) offer the most competitive rates for routine and common repairs. For complex diesel or transmission work, expect a premium at all high-quality establishments due to the required expertise and tooling.

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 Manassas regulations and climate