A week after the dash, CK engine,def,service now after days of going through the vehicle I found a broken wire in the chassie loom for the def tank and a bad connection at the fuel module. Now how do I get the dash the lights and the def to not say tampered when hooked up to GDs laptop? Must everything be hooked back up then delete again

Hi, give more details , years , OP System id, the dtc's that are active , and the exact message in the dash, is the delete file a home made or you bought from IE

Hello Paul thanks for replying it's a 2017 Chevy Duramax 6.6 HP tuners program the information center says will be shut down to 158 mph. When I hook up the laptop it says def insufficient poor quality ,it's empty, tampered