The Best GMC Repair in Catalina, AZ

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

#1

The Diesel Shop

4.8
(240 reviews)
Verified

A highly specialized, family-owned shop focused exclusively on diesel performance, repair, and maintenance. They are the go-to experts in Southern Arizona for complex Duramax engine diagnostics, performance tuning, and Allison transmission rebuilding. Their clientele includes heavy-duty truck owners, ranchers, and those with high-performance towing needs.

3455 E 44th St, Tucson, AZ 85713 (Serves the Catalina/Tucson area)

Specialties & Features

Duramax diesel service
Allison transmission repair
Heavy-duty truck suspension

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Gary's Prime Auto & Diesel

4.7
(180 reviews)
Verified

Known for its excellent reputation in general auto repair with a strong sub-specialty in diesel and transmission services. They are a well-established, full-service shop that can handle everything from EcoTec engine diagnostics on smaller GMCs to the complex electronics and luxury features of Denali models, in addition to their diesel work.

11695 N Oracle Rd, Oro Valley, AZ 85737 (Adjacent to Catalina)

Specialties & Features

EcoTec engine diagnostics
Denali luxury features and electronics
Transmission repair

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes
#3

AZ Power & Four Wheel Drive

4.6
(150 reviews)
Verified

This shop specializes in the off-road and utility aspects of GMC trucks. Their core expertise lies in 4WD system service, suspension lifts and upgrades, and towing package installation and maintenance. They are the ideal choice for owners of Sierra HD trucks or those who use their vehicles for serious towing and off-pavement driving.

4040 E 22nd St, Tucson, AZ 85711 (Serves the Catalina/Tucson area)

Specialties & Features

4WD and towing system service
Heavy-duty truck suspension
Towing package maintenance

Business Information

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

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

** The GMC repair market serving Catalina, AZ, is characterized by a reliance on the larger Tucson metro area for specialized services. While Catalina has a few general automotive repair shops, the highly specific expertise required for Duramax, Allison transmissions, and advanced Denali electronics is concentrated in established, reputable specialty shops in Tucson and Oro Valley. **Average Quality & Competition:** The quality for specialized GMC repair is high, but the number of true "specialists" is limited, creating a competitive environment among a few top-tier players. These shops compete on reputation and technical expertise rather than price. General mechanics are abundant, but they often sub-contract or refer out the complex diesel and transmission work to the specialists listed above. **Typical Pricing:** Pricing is in the mid-to-high range, reflecting the specialized training, proprietary diagnostic tools, and high cost of parts required for these services. Owners of GMC trucks, particularly HD models with diesel engines, should expect premium labor rates. A basic diagnostic fee typically ranges from $150-$250, with major repairs like transmission rebuilds or diesel fuel system work easily running into the $4,000-$8,000+ range.

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 Catalina regulations and climate