Duramax Service St. Paul

Fourth Generation Family Owned Auto Repair

When you’re searching for quality Duramax service in St. Paul, visit Signal Garage! With a team of dedicated ASE-certified technicians, we can help preserve your engine’s power, performance, and durability. As a full-service auto shop, we offer every service your diesel needs, from factory scheduled maintenance to engine repairs. We see all models equipped with a Duramax engine and back all repairs with a nationwide and lifetime warranty on parts and labor. Whether you have a GMC with a Duramax engine or a Chevy diesel, we’ll keep your vehicle going strong! Schedule an appointment today.

Full-Service GMC Duramax Repair & Maintenance

Duramax diesel engines are one of the best choices when you need superior towing and hauling capability. Even better, they’re incredibly reliable. With proper maintenance and quality repairs, you can keep your GMC or Chevy diesel on the road for hundreds of thousands of miles. Our technicians complete ongoing training to ensure that no matter the age of your diesel, they understand how to repair it properly.

We offer comprehensive Duramax service and repairs in St. Paul, including:

  • 30K, 60K, and 90K service
  • Oil & filter changes
  • Fluid changes & flushes
  • Diesel Particulate Filter (DPF) cleaning
  • Fuel filter replacement
  • Fuel injector cleaning
  • Oil leak repair
  • Lift pump repair
  • Fuel injection pump repair
  • Engine noise troubleshooting
  • Diesel exhaust fluid system repair
  • Check engine light troubleshooting & repair
  • Head gasket replacement
  • Cooling system repair
  • And more!

The Best Duramax Service in St. Paul

When you’re searching for the best Duramax service in St. Paul, turn to the experts at Signal Garage! As a fourth-generation family-owned and operated shop, you can always expect to receive friendly, knowledgeable service. We treat you as a member of our extended family, and your vehicle like it was our own. We also offer 6-month interest-free financing to help you get the repairs you need. Contact us today or schedule your appointment online!


Contact Us       Make an Appointment

Grand Avenue

2050 Grand Avenue
St Paul, MN 55105
8AM – 5:30PM
(651) 690-1487

Marshall Avenue

1592 Marshall Avenue
St Paul, MN 55104
8AM – 5:30PM
(651) 728-6200

West Saint Paul

84 Moreland Ave East
West St Paul, MN 55118
8AM – 5:30PM
(651) 457-2668

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ASE CERTIFIED
4TH GENERATION