X15 tractor vibrates when engine brake is on

[Rawze]

(02-01-2020 )Edjahman Wrote:  It's going to Peterbilt Monday for a DEF cleaning.

Hopefully it'll get sorted out then or I'll sort it out myself.

Thank you

That sounds like an expensive waste of money, especially going to the one place that is the most ignorant, most expensive, most under-qualified, under-trained place you can take a truck to any more.