Cummins Diesel Engine Repair in Macomb County, MI

When Ram truck owners talk about their engines, the Cummins comes up fast. It has earned that reputation. Torque that pulls without apology, longevity that outlasts most everything else on the road, and a fanbase that borders on devoted. At Gordie’s Auto & Tire, we service Cummins-powered trucks across our Macomb County locations with the same honest, transparent approach we bring to every vehicle we work on. If your Cummins needs attention, you deserve a shop that actually knows it.

The Engine That Refuses to Quit

Cummins has been building diesel engines since 1919, but everything changed in 1989 when Ram brought the B-Series Cummins into the light-duty truck market. The inline-six architecture, built around torque, serviceability, and long-term durability, resonated with truck owners immediately. The Cummins-powered Ram became a benchmark for what a diesel work truck could be, and it has held that standard for over three decades.

In Macomb County, where hard-working trucks are part of daily life, keeping these engines running right is something our team takes seriously.

Cummins Generations We Service

We service all major Cummins generations across the Ram heavy-duty truck lineup:

5.9L 12-Valve Cummins (1989-1998): The engine that started it all. Mechanically simple, incredibly durable, and still running strong in trucks across Macomb County. A legend for good reason.
5.9L 24-Valve Cummins (1998-2007): Added electronic fuel injection and improved emissions while retaining the platform’s core durability. Known for VP44 injection pump vulnerabilities on earlier versions that require knowledgeable diagnosis.
6.7L Cummins (2007-Present): The current-generation engine with significantly improved power output, modern emissions systems, and high-pressure common rail fuel injection. The most advanced Cummins platform to date and the one requiring the most current diagnostic equipment and training.

Cummins Issues Our Team Regularly Sees and Fixes

Cummins engines are built to last, but no platform is without its known weak points. Here is what our team diagnoses and repairs on a regular basis:

VP44 injection pump failures on 24-valve 5.9L engines causing hard starts and sudden power loss
Lift pump failures starving the injection pump of fuel and accelerating wear
EGR valve and cooler failures on 6.7L engines causing performance and emissions issues
DPF clogging and regeneration failures on newer 6.7L platforms
Head gasket failures from overheating or high-mileage wear
Turbocharger failures causing reduced boost pressure and power loss
Crankcase ventilation issues on high-mileage engines leading to oil consumption
Glow plug failures making cold starts difficult through Michigan winters
Fuel injector wear causing rough running, excessive smoke, and fuel economy drops

If your Cummins is not performing the way it should, our team knows exactly where to start.

Cummins Repair and Maintenance Services We Provide

Cummins Diagnostics

Accurate diagnosis is the foundation of every repair we do. We use professional-grade diagnostic equipment to identify fault codes and test beyond them to confirm the actual cause before anything is recommended or approved.

Injection Pump and Fuel System Service

From VP44 pump replacements on 5.9L engines to high-pressure common rail service on the 6.7L, we handle Cummins fuel system work with the precision and experience these systems demand.

EGR and Emissions System Repair

EGR valves, EGR coolers, DPF filters, and SCR systems on modern 6.7L Cummins engines require proper maintenance and repair to keep your truck performing cleanly and efficiently. We handle all of it.

Turbocharger Service and Repair

Turbocharger problems are a common cause of power loss and excessive smoke on Cummins trucks. We diagnose and repair turbo faults to restore boost pressure and get your engine performing the way it was built to.

Cooling System and Head Gasket Repair

Overheating is one of the most damaging things that can happen to a diesel engine. We inspect and repair cooling system components and handle head gasket repairs correctly the first time to protect your engine from further damage.

Lift Pump Service

A failing lift pump is one of the most common and preventable causes of VP44 injection pump failure on 5.9L Cummins engines. We diagnose lift pump issues early and replace them before they take out more expensive components downstream.

Preventive Maintenance

Consistent maintenance is what separates a Cummins that runs for 300,000 miles from one that does not. We perform oil changes, filter replacements, fluid services, and scheduled maintenance to keep your engine protected for the long haul.

Why Cummins Owners Bring Their Trucks to Gordie's

Ram truck owners are particular about who works on their Cummins, and they should be. Here is what they find when they bring it to us.

3-Year / 36,000-Mile Warranty

Every Cummins repair is backed by our warranty so you can get back to work with real confidence.

We Know This Platform

Cummins-powered Ram trucks are a regular part of what our team works on. We are not figuring it out as we go.

Diagnosis Before Any Recommendation

We confirm the actual cause before approving any repair. You will never pay to fix the wrong thing.

Four Trusted Credentials

ASE certified, AAA approved, NAPA Gold certified, and State of Michigan certified.

Your Call, Your Decision

We give you the complete picture of what we found and why it matters before you commit to any repair.

Financing Available

NAPA and Goodyear financing options are here when Cummins repairs add up.

Cummins Diesel FAQs

Which Cummins engines does Gordie's Auto & Tire service?

We service all major Cummins generations in the Ram heavy-duty lineup, including the 5.9L 12-valve, 5.9L 24-valve, and 6.7L engines across Ram 2500 and 3500 trucks. Whatever generation you drive, our team is ready to handle it.

How do I know if my VP44 injection pump is failing on my 5.9L Cummins?

Common signs include hard starts, sudden power loss, rough running, and in some cases a complete no-start condition. VP44 failures are often preceded by a failing lift pump, which is why we check the full fuel system when these symptoms come in.

My 6.7L Cummins has a DPF warning light. What should I do?

Do not ignore it. A DPF warning can indicate a clogged filter, a failed regeneration cycle, or a related emissions system fault. Continuing to drive without addressing it can lead to forced engine derate and more significant repairs. Bring it into Gordie’s Auto & Tire and our team will diagnose it correctly.

Are Cummins engines worth repairing at high mileage?

Often yes. The Cummins engine is one of the most rebuildable and long-lasting diesel platforms available. With proper maintenance and timely repairs, these engines regularly reach 300,000 to 400,000 miles and beyond. Our team will give you an honest assessment of whether repair makes sense for your specific situation.

Schedule Your A/C or Heater Repair in Macomb County Today

Your Ram truck is built to work and the Cummins under the hood was built to last. When it needs service, Gordie’s Auto & Tire is ready with the knowledge and honesty your engine deserves. We serve Cummins truck owners from New Baltimore, Chesterfield, Ira, Clay Township, Romeo, and across northern and central Macomb County.

Roseville, MI

29046 Calahan Road 
Roseville, MI 48066

Call: 586-775-1185

Sterling Heights, MI

6331 Metro Pkwy 
Sterling Heights, MI 48312

Call: 586-939-0230

New Baltimore, MI

35361 23 Mile Road 
New Baltimore, MI 48051

Call: 586-725-8111

Chesterfield, MI

38200 23 Mile Road 
Chesterfield, MI 48047

Call: 586-333-5660

Ready to Get Your Vehicle Taken Care Of?

Your vehicle keeps life moving. We’re here to make sure it stays that way.

Whether you need auto repair, tire service, diesel repair, fleet maintenance, or help from a trusted local shop, Gordie’s Auto & Tire is ready to help you get clear answers and confident service.