Top 3 GMC Repair Shops in Schooleys Mountain

Compare the highest-rated gmc repair mechanics in Schooleys Mountain, New Jersey. All shops are licensed, insured, and verified through our rigorous screening process.

#1

Hackettstown Auto & Truck Repair

4.8
(240 reviews)
Verified

A highly reputable, family-owned shop known for its technical expertise with both domestic and import vehicles, with a significant focus on light and heavy-duty trucks. They have built a strong reputation for honest diagnostics and quality workmanship on complex systems, making them a top choice for GMC Sierra and Yukon owners.

125 Willow Grove St, Hackettstown, NJ 07840

Specialties & Features

Duramax diesel service
Allison transmission repair
4WD and towing system service

Business Information

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

Long Valley Auto & Truck Repair

4.7
(180 reviews)
Verified

Located very close to Schooleys Mountain, this local shop is a go-to for residents. They have multiple ASE Master Technicians on staff and receive consistently high praise for their customer service and ability to handle everything from routine EcoTec engine maintenance to advanced diagnostics on Denali electronic features.

50 Fairmount Rd, Long Valley, NJ 07853

Specialties & Features

EcoTec engine diagnostics
Denali luxury features and electronics
heavy-duty truck suspension

Business Information

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

Chester Springs Auto & Diesel

4.6
(150 reviews)
Verified

While servicing all makes and models, this provider has developed a niche expertise in diesel performance and repair. They are the preferred shop for local contractors and tow operators who rely on their Duramax-powered trucks. They are well-equipped for towing package maintenance and suspension upgrades for heavy-duty models.

300 Main St, Chester, NJ 07930

Specialties & Features

Duramax diesel service
heavy-duty truck suspension
towing package maintenance

Business Information

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

Why These Are the Top GMC Repair Auto Repair Shops in Schooleys Mountain

** The GMC repair market serving Schooleys Mountain is characterized by high-quality, independent repair shops rather than a high volume of options. Due to the rural and affluent nature of the area, there is a significant population of late-model GMC Sierras (especially Denali and AT4 trims) and Yukon XLs used for towing and family transport. This demand has fostered a competitive environment where shops must possess advanced diagnostic tools and specialized knowledge to succeed. The average quality of service is high, as these businesses rely heavily on local reputation and word-of-mouth. Competition is strong among the top independents, but there is no cut-throat pricing; instead, they compete on technical competency, warranty on work, and customer service. Typical pricing is at a premium compared to national chain shops, reflecting the higher expertise, specialized tools (such as GM-specific diagnostic software like GDS2 and MDI), and quality of parts (often OEM) used. For reference, a complex Duramax or transmission diagnostic session can range from $150-$300, while major repairs easily run into the thousands, justified by the technical labor and part costs involved.

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 Schooleys Mountain regulations and climate