The Best GMC Repair in Portland, OR

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

#1

The GMC Truck Shop

4.8
(240 reviews)
Verified

Widely regarded as Portland's premier independent specialist for GMC trucks and SUVs. They are known for their deep technical expertise, particularly with complex diesel and transmission issues. Their technicians are often former dealership master technicians, and they invest in the latest diagnostic tools specific to GM vehicles. The shop has a loyal customer base and is frequently recommended for difficult diagnostics.

8245 NE Columbia Blvd, Portland, OR 97218

Specialties & Features

Duramax diesel service
Allison transmission repair
GMC electronics
programming

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Cooper's Diesel & Auto Repair

4.7
(180 reviews)
Verified

A highly respected name in the Portland area for diesel performance and repair. While they service all diesel brands, they have a dedicated and expert GMC/Duramax practice. Their strengths lie in engine performance, towing system maintenance, and heavy-duty suspension upgrades. They are the go-to shop for owners who use their trucks for serious towing, hauling, or off-road purposes.

11232 NE Marx St, Portland, OR 97220

Specialties & Features

Duramax performance tuning
Heavy-duty suspension
Towing package maintenance

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

C & C Motorworks

4.6
(150 reviews)
Verified

A well-established, full-service shop with a strong reputation for honest diagnostics and comprehensive service on GM vehicles. They are particularly adept at handling the full spectrum of GMC needs, from EcoTec engine diagnostics in smaller SUVs to the luxury features and infotainment systems in Denali models. They offer a strong balance of mechanical expertise and customer service.

7330 NE 47th Ave, Portland, OR 97218

Specialties & Features

EcoTec engine diagnostics
Denali luxury features
4WD and AWD service

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market in Portland is robust and competitive, characterized by a clear dichotomy between dealership service centers and a strong ecosystem of independent specialists. The average quality of specialized independent shops is high, as the technical complexity of modern GMC trucks (especially diesels and vehicles with advanced electronics) creates a barrier to entry that general mechanics often cannot overcome. **Competition Level:** High. Customers have multiple top-tier independent options, which drives a focus on specialized expertise and customer service. Shops that survive and thrive are those that invest in ongoing technician training and proprietary GM diagnostic software. **Typical Pricing:** Independent specialists typically offer labor rates 15-30% lower than dealerships while often providing more experienced technicians. However, for highly specialized work (e.g., Duramax injector replacement or Allison transmission rebuilds), pricing remains premium due to parts costs and required expertise. Expect to pay a fair market rate for quality, but with significant savings over the dealer for comparable or superior service.

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 Portland regulations and climate