Incorrect PCM Programming
- There are only a few situations when reprogramming a PCM is appropriate, such as the following: A new service PCM is installed. A PCM from another vehicle is installed. Revised software or calibration files have been released for this vehicle.
- Verify that the PCM contains the correct software or calibration. If incorrect programming is found, reprogram the PCM with the most current software or calibration. See «POWERTRAIN CONTROL MODULE»(/chevrolet/suburban-k1500/gmt800-2000-2006/remont/testing-diagnostics/#engine-controls-self-diagnostics-81l__powertrain-control-module) under PROGRAMMING.