Top 3 GMC Repair Shops in Nyssa

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

#1

Nyssa Automotive & Diesel

4.7
(110 reviews)
Verified

A cornerstone of the local automotive community, Nyssa Automotive & Diesel is widely regarded as the most capable independent shop for both gas and diesel vehicles. They have built a strong reputation for tackling complex diagnostics and repairs on modern GMC trucks, particularly the Duramax diesel and Allison transmission systems commonly found in heavy-duty models. Their technicians are experienced with 4WD systems and towing diagnostics.

103 Park Ave, Nyssa, OR 97913

Specialties & Features

Duramax diesel service
Allison transmission repair
4WD and towing diagnostics

Business Information

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

Treasure Valley Diesel & Auto Repair

4.8
(180 reviews)
Verified

Located just across the river in Ontario, this shop is a top-tier destination for GMC owners, especially those with diesel powertrains. They market themselves specifically as diesel specialists and have the advanced diagnostic tools and technical knowledge for Duramax engines and related systems. They are a go-to for performance enthusiasts and those requiring heavy-duty suspension and towing package work.

347 SE 2nd St, Ontario, OR 97914

Specialties & Features

Duramax diesel performance
Heavy-duty suspension
Advanced engine diagnostics

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
#3

G & M Auto Service

4.5
(90 reviews)
Verified

A trusted, family-owned shop in Nyssa known for honest service and reliable repairs. While they are a full-service garage, they have specific expertise in transmission services and general engine diagnostics, making them a solid choice for GMC owners with issues related to the 10-speed automatic transmission or EcoTec3 engines. They handle routine maintenance and complex repairs with a focus on customer service.

411 Goodfellow St, Nyssa, OR 97913

Specialties & Features

Transmission service
EcoTec engine diagnostics
General maintenance and repair

Business Information

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

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

** The GMC repair market in Nyssa, Oregon, reflects its agricultural and rural setting. The demand is high for competent repair of heavy-duty trucks, diesel engines, and towing systems. There is no dedicated GMC dealership within Nyssa, forcing residents to rely on skilled independent shops or travel to larger centers like Ontario, ID (5 miles away) or Boise, ID (60 miles away). **Average Quality:** The quality of independent shops is generally high, with several long-standing businesses earning community trust. The technical expertise for complex electronic and diesel systems is concentrated in a few top shops. **Competition Level:** Competition is moderate but specialized. Shops differentiate themselves by niche—diesel performance, general mechanical repair, or transmission focus. Customer loyalty is a significant factor. **Typical Pricing:** Labor rates are typically lower than at dealerships in Boise, ranging from $110 - $140 per hour. This represents excellent value, given the specialized knowledge required for modern GMC vehicles. Parts pricing is competitive but can be higher for specialized components due to shipping to a rural location.

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 Nyssa regulations and climate