2019 579 Transmission Fault

I guessing thats an auto-matic.

 

Old thread but I had the same issue and I broke down on the side of the road. Turns out they had to replace the clutch actuator.

 

Broke down at the shipper’s door - loaded. Transmission Fault keeps blinking. The Truck (Peterbilt 579) won’t get into a gear. I have tried disconnecting the battery several times but that is not working. This is an automatic transmission truck. Looks like I’m spending a night here since the dealership shop doesn’t open until weekend after Thanksgiving. Any help/suggestion on how to troubleshoot this issue?

 

So what was wrong wit truck mine started doing the same thing

 

I'm having this problem right now. What turned out to be the problem?

 

Easy answer. He followed through with what he said he was going to do and had qualified shop/tech diagnose and fix problem.

 

it’s your right gear shifter stalk. Although they had a recall of these from 2021 through 2024. They should have included the earlier years as well. There’s a small computer chip that’s in the shifter that gets loose or breaks loose. Also, sometimes the wires are getting pinched the best way to clear the code is to turn your truck completely off. turn off all your lights headlights flashers nothing can be on Open your door like you’re getting out and shut it but don’t get out and wait for the interior light to go out wait about 10 more seconds after that light goes out and then restart your truck and it should clear the code if it’s getting real bad it will take several times before the code is cleared There’s a place called Circuit Board medics just google it and they repair the shift stalks. But you have to send yours in to get it repaired. They do not sell them already repaired. This is the second time I’ve had to deal with this problem. Also moving your steering column up and down and in and out helps with clearing it at first. If you have a Kenworth with a paccar motor The same thing will happen to you and the same reason the gearshift stalk. My current employer, after months of trying to convince him finally believes me so we’re sending mine in to get repaired today. Yay.!!