The Best GMC Repair in Walnut, KS

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

#1

Certified Auto Service & Diesel Repair

4.8
(240 reviews)
Verified

A family-owned and operated business renowned for its deep expertise in diesel performance and heavy-duty truck systems. They are the go-to shop for complex Duramax diagnostics, performance tuning, and Allison transmission rebuilds. Their technicians have advanced training and they invest in proprietary diagnostic tools for GMC's latest electronics, including Denali suites.

1245 Industrial Parkway, Walnut, KS 66780

Specialties & Features

Duramax diesel performance
Allison transmission overhaul
Heavy-duty suspension lifts

Business Information

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

Walnut Creek Automotive & Transmission

4.6
(175 reviews)
Verified

Known for exceptional customer service and technical precision, Walnut Creek Automotive has built a strong reputation for transmission work and general GMC maintenance. They are a trusted local solution for EcoTec3 engine issues, towing package wiring, and 4WD system service. They offer a comprehensive warranty on all repairs.

301 Main Street, Walnut, KS 66780

Specialties & Features

Allison
10-speed transmission repair
EcoTec engine diagnostics
Towing system maintenance

Business Information

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

Precision Truck & SUV Service

4.4
(90 reviews)
Verified

While a slightly smaller operation, Precision Truck specializes in the electrical and comfort systems of modern GMCs. They excel at diagnosing complex electronic issues in Denali models (infotainment, driver aids, climate control) and are highly proficient with the 5.3L and 6.2L EcoTec engines. They also handle routine maintenance for all GMC models.

582 Oak Avenue, Walnut, KS 66780

Specialties & Features

Denali electronics
diagnostics
EcoTec service
4WD
towing system service

Business Information

Years in Business:8 years
Licensed:Yes
Insured:Yes

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

** The GMC repair market in Walnut, Kansas, reflects its rural, agricultural setting. The demand is high for competent diesel (Duramax) and heavy-duty truck service, given the prevalence of towing and hauling. The market is not saturated with a high number of competitors, but the few established providers are of notably high quality, as they must be to survive in a community where reputation is paramount. Competition is based on specialized technical knowledge and long-term trust rather than price alone. Typical pricing is competitive with regional averages. For standard services (oil changes, brake jobs), prices are moderate. However, for specialized work like Duramax injector replacement or Allison transmission rebuilds, prices are at a premium due to the required expertise, proprietary tools, and cost of OEM-quality parts. Customers generally expect to pay for quality workmanship, and the top shops deliver reliability that justifies the cost. Most service providers are small to medium-sized, independent businesses, creating a market where personalized service is the standard.

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 Walnut regulations and climate