Peterbilt 389

You
I have 2015 Peterbilt 389( car hauler). I picked up the truck from Peterbilt service few days ago. I got clutch and air leak fixed. After pickup, the airbags keep pumping the truck higher from normal levels, and then goes back down normally, and this is constant occurrence. I replaced a leveling valve and that didnt do anything. What happened to the truck while it was being serviced? Because this wasnt a problem before.

 

I spend $1200 for fixing this problem …

 

Next problem again . Only got truck from Servise, next 300 miles check engine light on, five codes 4349, 1787,74,5246 and stop engine , def light flashing, truck don’t have a power, speed 5mp/h ((((((. This truck killed me ((((