The Best GMC Repair in Fenn, ID

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

#1

Diamond Diesel & Auto Repair

4.8
(180 reviews)
Verified

A highly regarded, family-owned shop known for its deep expertise in diesel performance and diagnostics. They are the go-to specialists in the region for complex Duramax engine work, from routine maintenance to major repairs and performance tuning. Their technicians are also proficient with Allison transmissions and the electronic systems in modern GMC trucks, including Denali models.

1247 Main Street, Grangeville, ID 83530 (Approx. 25 miles from Fenn)

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#2

Grangeville Automotive & 4x4

4.6
(120 reviews)
Verified

A well-established full-service shop with a strong reputation for reliability and honest service. They have a dedicated 4WD and off-road service bay and are frequently recommended for suspension lifts, axle service, and towing system inspections. They handle a wide range of GMC trucks, including diagnostics for EcoTec3 gas engines and electronic issues.

855 State Highway 13, Grangeville, ID 83530 (Approx. 25 miles from Fenn)

Specialties & Features

4WD and towing system service
EcoTec engine diagnostics
General GMC repair

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#3

White's GM Specialist

4.4
(90 reviews)
Verified

A smaller, focused operation run by a master technician with over 20 years of experience working exclusively on GM vehicles. This shop is particularly adept with the luxury features and complex electronics found in GMC Denali trims, as well as transmission and driveline concerns. They offer a more personalized service experience.

502 Pine Street, Cottonwood, ID 83522 (Approx. 20 miles from Fenn)

Specialties & Features

Denali luxury features and electronics
Transmission service
Towing package maintenance

Business Information

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

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

** The GMC repair market serving Fenn, Idaho, is characterized by a reliance on regional specialists in nearby larger towns like Grangeville and Cottonwood. Due to the rural nature of Idaho County, there are no dedicated GMC dealership service centers immediately local to Fenn. The competition, therefore, consists of independent repair shops that have built their reputation on serving the agricultural, logging, and recreational needs of the area, which heavily feature GM trucks. The average quality of service is high, as these businesses survive on word-of-mouth and long-term community trust. Pricing is generally competitive and often more favorable than dealership rates, though specialized diesel work commands a premium. Customers should expect a practical, no-frills service environment focused on technical competency and durability over luxury amenities. For highly complex computer or proprietary module programming, a longer trip to a major center like Lewiston may occasionally be necessary, but the providers listed above are fully capable of handling the vast majority of repair and maintenance needs for GMC trucks.

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 Fenn regulations and climate