NHTSA Complaint #11624162 — 2018 PETERBILT 579

This vehicle about 6-8 weeks ago started throwing codes for all systems above (over 100 codes). This issue affected all systems of the vehicle including but not limited to the speed and braking of the vehicle, plus the fuel system and adaptive driving systems. We took it to the dealer Performance Peterbilt in Tifton, GA. They cleared the codes and said they resolved it by replacing a NOX sensor. We left the repair shop and within 50-100 miles the exact same issue started up again. We took it back to the same shop, they worked with Paccar and determined it needed a new ECM (Computer), this was changed out and still did not resolve issue. They then changed out the main wire harness. This resolved some issues but not all issues. Now the repair dealer is stating it needs a dash wire harness. This vehicle has relatively low miles 500K and has only been serviced by Peterbilt dealers through it's life. This issue causes the vehicle to accelerate and brake randomly plus many other issues by stopping power in hauling. We have another IDENTICAL vehicle which is now doing the same thing but have not brought it into the shop yet until manufacturer can get this 1st truck fixed properly to ensure safety.