Top 3 GMC Repair Shops in Union Lake

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

#1

Moran Engine & Transmission

4.8
(180 reviews)
Verified

A highly specialized and renowned shop focused exclusively on the complex repair of engines and transmissions. They are the go-to experts for major Duramax diesel and Allison transmission work, known for tackling problems that dealerships and general shops cannot. Their reputation is built on deep technical knowledge and high-quality, durable repairs.

2950 Elizabeth Lake Rd, Waterford, MI 48328 (Approx. 5 miles from Union Lake)

Specialties & Features

Duramax diesel service
Allison transmission rebuild/repair
Heavy-duty drivetrain diagnostics

Business Information

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

Lou's Professional Automotive

4.7
(250 reviews)
Verified

A well-established, full-service shop with a strong reputation for honesty and expertise in both domestic and import vehicles. They receive consistent praise for their diagnostic capabilities, particularly with modern engine systems and complex electrical issues. They are an excellent choice for comprehensive GMC care, including EcoTec engine service, suspension work, and general maintenance.

1101 N. Pontiac Trail, Walled Lake, MI 48390 (Approx. 3 miles from Union Lake)

Specialties & Features

EcoTec engine diagnostics
Suspension and steering repair
General GMC maintenance
repair

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

Serra Buick GMC of Waterford

4.3
(300 reviews)
Verified

As the local GMC dealership, Serra offers the most direct access to factory-trained technicians, genuine GM parts, and the latest proprietary diagnostic tools. This is the premier location for warranty work, complex electronics on Denali models, recalls, and factory-spec towing package maintenance. Their service department is equipped to handle the full spectrum of GMC vehicles.

1701 Crescent Lake Rd, Waterford, MI 48327 (Approx. 4 miles from Union Lake)

Specialties & Features

Denali luxury/electronics
Factory towing package maintenance
GM-certified diagnostics
recalls

Business Information

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

Why These Are the Top GMC Repair Auto Repair Shops in Union Lake

** The GMC repair market in the Union Lake area is robust and competitive, characterized by a healthy mix of a high-volume dealership and several highly reputable independent specialists. The average quality of service is high, as evidenced by the strong customer ratings across the top shops. Competition drives a focus on customer service and technical excellence. Typical pricing follows a clear tiered structure: * **Dealership (Serra):** Commands the highest labor rates but provides OEM parts, factory-specific tooling, and direct manufacturer support, which is critical for warranty and complex electronics. * **Specialty Independents (Moran):** Also command premium rates, but for their specific niche (diesel/transmission), they often provide more expertise and better value than a dealership for major repairs. * **Generalist Independents (Lou's):** Offer very competitive labor rates and are an excellent value for general repairs, diagnostics, and maintenance, providing dealership-level quality at a lower cost. For a GMC owner in Union Lake, the choice often comes down to the specific service needed: the dealership for warranty/electronics, a specialist like Moran for powertrain crises, and a trusted generalist like Lou's for ongoing maintenance and non-specialized repairs.

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 Union Lake regulations and climate