We have had this truck laid up for so long It’s hard to keep track of everything that has been done. As far as I know it only had ABS codes. There’s no sputter or miss. when the driver pulls out and starts shifting and the RPM drops below 1200 into the next gear there’s no foot pedal or accelerator at all if it stays above 1200 there’s no issue usually. One shop said the ABS module wasn’t communicating with the ECM correctly causing the truck to derate. The other shop just said the ECM wasn’t working correctly. (neither shop was very descriptive). Also I don’t have the necessary tools to send