I got the service abs/brake system message and lights on my 18 3500; it’s a widespread issue.

I bought the truck tuned already without the emissions components.

I called a dealer in my area and asked if they could check it out; even if my truck is tuned, they said to bring it in.

Are there any precautions I should take?

I have read on other forums to tell them not to flash the ECM.

Any recommendations are welcome.

This is my first diesel truck.