The Best GMC Repair in Phoenix, AZ

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

#1

A-1 Automotive & Diesel Specialist

4.8
(280 reviews)
Verified

A-1 Automotive has built a sterling reputation over two decades as a premier specialist for GM trucks and diesel engines. They are particularly renowned for their deep diagnostic capabilities on complex Duramax and EcoTec systems and are a trusted source for Allison transmission rebuilds and performance upgrades. Their technicians have advanced training and they cater extensively to clients with heavy-duty trucks used for towing and commercial purposes.

2035 W Mountain View Rd, Phoenix, AZ 85021

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

Scottsdale GMC & Truck Repair

4.7
(180 reviews)
Verified

Despite the "Scottsdale" name, this highly-rated shop is located in Phoenix and focuses exclusively on GM vehicles, especially GMC and Chevrolet trucks and SUVs. They receive consistent praise for their expertise with Denali-level luxury features, advanced electronics, and infotainment systems. Their service scope comprehensively covers the full spectrum of GMC needs, from routine EcoTec maintenance to complex 4WD and towing system diagnostics.

2122 E Magnolia St, Phoenix, AZ 85034

Specialties & Features

Denali luxury features and electronics
EcoTec engine diagnostics
Towing package maintenance

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#3

All Transmissions & Automotive

4.6
(220 reviews)
Verified

As the name implies, this shop is a transmission authority, with specific expertise in the Allison series found in GMC HD trucks. They are a full-service auto repair center with a strong focus on drivetrain systems, making them an excellent choice for 4WD service, differential work, and transmission-related towing issues. They are known for honest diagnostics and quality workmanship on a wide range of GMC models.

3317 E McDowell Rd, Phoenix, AZ 85008

Specialties & Features

Allison transmission repair
4WD and towing system service
Drivetrain diagnostics

Business Information

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

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

** The GMC repair market in Phoenix is robust and highly competitive, driven by the region's reliance on trucks for personal, commercial, and recreational use. The average quality of specialized shops is high, as the desert climate and towing demands create a need for technicians who understand heavy-duty systems, cooling, and transmission stress. **Competition Level:** Intense. Competition exists between dedicated independent specialists (like those listed above) and numerous dealership service centers. The independents typically compete on price, personalized service, and deeper expertise in specific areas like diesel performance or transmission rebuilding. **Typical Pricing:** Labor rates are competitive, generally ranging from **$130 - $180 per hour** for specialized shops, which is often 20-30% less than dealership rates. Complex repairs like a Duramax injector replacement or an Allison transmission overhaul can run from **$3,000 to $8,000+,** depending on the vehicle and the extent of the work. The market rewards transparency and fair quoting, with the top shops clearly communicating diagnostic fees and repair options.

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 Phoenix regulations and climate