Diesel problems? We’re diagnostics experts.

Getting to the root of vehicle problems requires a systematic processes. Whether it’s a complex electric issue or a simple fuse, we track our diagnostic processes and continually improve in Flint, Michigan


Finding a solution for a problem no-one else can fix is our specialty.

We’re the shop the Flint Michigan dealerships call when they can’t figure out what’s wrong. As diesel engine diagnostics experts, we know that investigating tricky issues can be time consuming and expensive. Not to mention, every day that your truck is in the shop is a day that you aren’t on the road, making money. We know the importance of getting problems fixed quickly, correctly and affordably.

Here are just a few of the brands we’re proud to offer diagnostics services for:

  • Peterbilt
  • Kenworth
  • Western Star
  • International
  • Mack
  • Hino
  • Isuzu
  • Volvo
  • Detroit Diesel
  • and more.

What system issues do we diagnose? 

Our highly trained and certified mechanics are more than capable of diagnosing any and all issues. Whether it be an electrical issue or a transmission issue, you can rest assured knowing Vehicle City will catch it. We’ll provide you with a report stating what the issue is, what’s causing the issue, and what we can do about it. The process is very transparent, very efficient, and always very accurate. We’re not here to sell you parts and service you don’t need. We pride ourselves on our good work and care deeply about our customer’s safety.

How long does a diagnosis take? 

Unfortunately this question isn’t an easy one to answer. Simple issues can be diagnosed in a matter of minutes, whereas others may take multiple hours. Complex issues like electrical problems may take a lot of troubleshooting and wire tracing, whereas suspension components are easily seen and inspected. One of our technicians will likely be able to give you an estimate once they’ve heard about the symptoms you’re seeing.

How do we diagnose issues? 

The answer to this depends on the symptoms. If you report that various electrical systems are glitching, we’ll troubleshoot your wiring. If you report that your heavy-duty commercial vehicle isn’t driving well, we’ll take it for a test drive and then inspect the drive-train and suspension. For more information about our diagnostics process, please contact a Vehicle City Fleet Services representative.