Duramax Service West St. Paul

Fourth Generation Family Owned Auto Repair

Keeping up with your Duramax service is the best way to help your diesel live up to its reputation as one of the most powerful, durable engines on the market. Signal Garage in West St. Paul offers complete GMC Duramax repair and maintenance to preserve your investment and keep your Chevy pick up going strong. Our ASE-certified technicians service and repair all models equipped with a Duramax engine and can help you with anything you need, from oil changes to fuel injector replacements.

High-Quality GMC Duramax Repair & Maintenance

We perform a wide range of Duramax service and repairs, including:

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

When you need GMC Duramax repair, bring your diesel to a shop that won’t treat it like a spark-ignition engine! We take pride in our work and back all repairs with a lifetime warranty. We also offer 6-month interest-free financing to help you get the repairs you need when you need them. With three convenient locations to serve you in St. Paul and West St. Paul, we make it easy to keep up with your Duramax service easy. Schedule an appointment with us today!


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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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4TH GENERATION