The Best GMC Repair in Montgomery, PA

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

#1

Stetler Diesel & Auto Repair

4.8
(180 reviews)
Verified

A family-owned and operated business widely regarded as the premier diesel and drivetrain specialist in the region. They have built a formidable reputation for deep technical expertise, particularly with GM platforms. Their technicians are adept at handling complex diagnostics and repairs on everything from modern Duramax emissions systems to classic Allison transmission rebuilds. They are a top choice for heavy-duty truck owners, from daily drivers to commercial work trucks.

1649 E 3rd St, Williamsport, PA 17701

Specialties & Features

Duramax diesel service
Allison transmission repair
heavy-duty truck suspension

Business Information

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

McMahon's Service Center

4.6
(250 reviews)
Verified

A long-standing, full-service automotive center with a strong reputation for honesty and high-quality work. While not exclusively a diesel shop, they have certified technicians with extensive experience servicing the full range of GMC vehicles, including SUVs like the Yukon Denali and trucks like the Sierra. They are particularly praised for their work on engine diagnostics, electrical systems, and general maintenance, making them an excellent all-around provider for GMC owners.

329 Rose St, Williamsport, PA 17701

Specialties & Features

EcoTec engine diagnostics
Denali luxury features and electronics
towing package maintenance

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

K&N Auto & Truck Service

4.5
(90 reviews)
Verified

A well-respected local shop known for its practical, no-nonsense approach to truck and SUV repair. They offer a comprehensive range of services with a focus on drivability and mechanical integrity. Their team is skilled in 4WD system service, transmission work, and suspension repairs, catering to customers who use their GMC trucks for towing and off-pavement use. They are known for being a reliable and cost-effective alternative to dealerships.

2249 E 3rd St, Williamsport, PA 17701

Specialties & Features

4WD and towing system service
transmission repair
general GMC maintenance

Business Information

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

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

** The GMC repair market in the Montgomery, PA area is characterized by a few highly specialized independent shops operating within a 15-20 mile radius, primarily in Williamsport. Due to the rural and industrial nature of Lycoming County, there is strong demand for expertise in diesel engines, heavy-duty suspensions, and towing systems. The competition is not saturated, but it is fierce in terms of quality; shops that survive and thrive do so by building a sterling reputation for technical competence and trustworthiness, as word-of-mouth is powerful. The average quality of service is high, with several shops boasting technicians with former dealership or factory-specific training. Pricing is generally competitive compared to central Pennsylvania dealerships, with labor rates typically 15-25% lower, while parts costs are similar. Customers in this market are discerning and value shops that can demonstrate proven experience with the complex electronic and mechanical systems found in modern GMC trucks and SUVs.

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 Montgomery regulations and climate