The Best GMC Repair in Sequim, WA

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

#1

Campbell Auto Repair & Diesel

4.8
(180 reviews)
Verified

A highly respected, family-owned shop known for its technical depth, especially in diesel engine performance and complex diagnostics. They have built a strong reputation for being honest, thorough, and capable of handling everything from routine maintenance on light-duty trucks to major repairs on heavy-duty Duramax-powered GMCs. Their technicians are consistently praised for their problem-solving skills.

801 E Washington St, Sequim, WA 98382

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Dungeness Auto Center Inc.

4.7
(250 reviews)
Verified

A long-standing pillar of the Sequim automotive community, Dungeness Auto Center is known for its comprehensive service offerings and high customer satisfaction. They employ ASE-certified technicians and have extensive experience with modern vehicle electronics and complex drivetrains, making them a great choice for Denali model care, transmission service, and towing system maintenance.

104 Old Blyn Hwy, Sequim, WA 98382

Specialties & Features

Transmission repair (Allison
10-speed)
Denali luxury features and electronics
Towing package maintenance

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

Sound Automotive & Diesel

4.6
(90 reviews)
Verified

While serving a broad range of vehicles, this shop has developed a niche expertise in diesel and drivetrain services. They are a strong alternative for GMC owners, particularly those with diesel engine issues or 4WD system concerns. Customers frequently mention their fair pricing and effective communication.

130 N 2nd Ave, Sequim, WA 98382

Specialties & Features

EcoTec engine diagnostics
4WD system service
Duramax diesel service

Business Information

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

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

The GMC repair market in Sequim is characterized by a small number of high-quality, independent shops that have earned strong community trust, rather than a high volume of competitors. The market lacks a dedicated GMC/Cadillac dealership, forcing owners to rely on these skilled independents or travel to neighboring cities like Port Angeles or Silverdale for dealership service. This dynamic has fostered a competitive environment where quality of work and reputation are paramount for business survival. The average quality of service for GMC-specific repairs is high, as the shops that succeed are those that have invested in the specialized training and equipment required for modern GMC trucks, especially Duramax and Allison systems. Competition is moderate but focused; these top shops are not competing on price alone but on demonstrated expertise. Typical pricing is in line with regional averages for specialized mechanical work, with hourly labor rates generally ranging from $130 to $165 per hour. Customers can expect a premium for diesel and transmission-related work due to the complexity and required certifications.

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 Sequim regulations and climate