The Best GMC Repair in Sidman, PA

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

#1

Stoney's Automotive & Diesel Service

4.8
(180 reviews)
Verified

A highly respected, family-owned shop known for its deep expertise in both domestic and diesel powertrains. They are the go-to specialists for complex diagnostics and repair on modern and classic GMC trucks, particularly praised for their work on Duramax engines and Allison transmissions. Their reputation for honest service and technical proficiency is exceptional.

736 Broad St, Johnstown, PA 15906

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

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

Richland Truck & Auto Repair

4.6
(120 reviews)
Verified

Located very close to Sidman in the Richland commercial area, this provider offers significant convenience and a strong focus on both light-duty and heavy-duty GMC trucks. They have robust capabilities in 4WD system service, towing package maintenance, and general engine diagnostics, making them an excellent all-around choice for Sierra and Denali owners.

1357 Scalp Ave, Johnstown, PA 15904

Specialties & Features

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

Business Information

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

Delaney's Service Center

4.5
(90 reviews)
Verified

A well-established service center with a long history of serving the Johnstown area. While they are a full-service garage, they have developed a strong niche in electronic diagnostics and luxury vehicle features, making them a solid choice for addressing the complex infotainment, comfort, and safety systems found in GMC Denali models.

604 Luzerne St, Johnstown, PA 15905

Specialties & Features

Denali luxury features and electronics
Transmission service
Comprehensive diagnostics

Business Information

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

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

** The GMC repair market serving Sidman, PA, is characterized by a small number of highly capable independent shops within the immediate area, supplemented by a strong network of providers in the neighboring Johnstown area. There is no dedicated GMC or GM dealership in Sidman itself, which shifts demand toward these reputable independents. **Average Quality:** The quality is generally high, with successful shops building their reputation on expertise in American-made trucks, which are prevalent in this region. The best shops, like those listed, employ ASE and manufacturer-specific certified technicians. **Competition Level:** Competition is moderate. While there are many general auto repair shops, true specialists with the advanced diagnostic tools and training for modern GMC systems (especially Duramax, Allison, and Denali electronics) are fewer and stand out significantly. These top-tier shops are often in high demand. **Typical Pricing:** Pricing is competitive and typically 20-30% lower than dealership labor rates while maintaining similar or higher levels of expertise for specialized systems. For example, a Duramax injector replacement or an Allison transmission service will be a significant investment, but the cost at these independents is viewed as fair value for the quality of workmanship. Hourly labor rates generally range from $110 to $140 per hour.

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 Sidman regulations and climate