2012 cascadia problems

[Zusky407]

I got a 12 Cascadia as well, I did the egr tune up and decided to do demandate it, no more issues runs great, better on fuel consumption.
On a side note these Cascadias have their own electrical issues, there is a PNBD under the hood that is a common thing to go out, about 360$ or so and you can replace it in 10min.
If the windshield has been replaced they are tricky to seal and if it leaks it will eventually take out your SAM CAB its the computer module that controls everything in your cab including lights.
Other than that these trucks are nice and comfy not to mention easy to back in anywhere.