Top 3 GMC Repair Shops in Ephrata

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

#1

GMC of Ephrata

4.5
(180 reviews)
Verified

As the area's authorized GMC dealership, this service center is the primary destination for factory-trained technicians, genuine GM parts, and the most advanced diagnostic equipment. They are best equipped to handle complex electrical issues, warranty work, and the latest model-year technologies.

2011 Basin St SW, Ephrata, WA 98823

Specialties & Features

Denali electronics
programming
Allison transmission service
Duramax diesel performance

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

B&C Auto & Diesel

4.7
(95 reviews)
Verified

A highly reputable independent shop known for its deep expertise in diesel engines and heavy-duty truck systems. They are a top choice for GMC owners who prefer specialized, independent service over the dealership, particularly for older Duramax models, performance upgrades, and significant transmission or suspension work.

128 1st Ave SW, Ephrata, WA 98823

Specialties & Features

Duramax diesel service
heavy-duty suspension
Allison transmission repair

Business Information

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

Grant County Automotive

4.3
(70 reviews)
Verified

A well-established, full-service auto repair shop with a strong track record of servicing domestic trucks and SUVs. They receive consistent praise for their honest diagnostics, quality workmanship, and expertise in 4WD systems and general engine repair, making them a solid choice for routine and complex GMC maintenance.

102 4th Ave NW, Ephrata, WA 98823

Specialties & Features

4WD system service
EcoTec engine diagnostics
towing package maintenance

Business Information

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

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

** The GMC repair market in Ephrata is characterized by a high level of specialization driven by the region's reliance on heavy-duty trucks for agriculture and towing. The quality of service is generally high among the top-tier providers, but options are limited. **GMC of Ephrata** holds a near-monopoly on factory-direct services and cutting-edge technical support. The independent market is small but robust, with shops like **B&C Auto & Diesel** carving out a dominant niche in the diesel and performance sector. Competition is not on volume but on technical capability and reputation. Typical pricing reflects this specialization. Dealership labor rates are at a premium, while reputable independents are slightly more affordable but still command rates higher than general mechanics due to their specific expertise. Consumers are generally knowledgeable and expect a high standard of work, which the top shops consistently deliver. For highly specific issues (e.g., a 10-speed transmission reprogramming or a complex Denali electronics fault), the dealership is often the only viable option.

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 Ephrata regulations and climate