2019 Peterbilt 579 - wire issue
Truck won’t do a regen or forced regen; Peterbilt dealer initially diagnosed VGT isssue but said it $5k and can’t guarantee his work and there could be other issues; paid $3000 to replace VGT yet truck is still in derate. now mechanic says it could be a wiring issue or other codes so basically they don’t know the exact issue. if anyone has expertise or experience in this please leave a comment. Thank you