DURAMAX TUNER L5P TUNING PACKAGE | 17-20 GM 6.6L DURAMAX

OTE: Note this ECM exchange service is completed at the owners risk, HP Tuners will not be responsible for the vehicle, its power-train or electronics, nor how the ECM is used, calibrated and its functionality. Should you experience any issues with your ECM, please contact support@hptuners.com for assistance and how to proceed.

A reminder that your ECM will not be returned to you, this service is an “exchange” and you will receive another modified ECM in its place. There is no outright purchase option available at this time.

We exchange and modify ECMs as fast as we can, but initially, please allow at least 3 business days (plus the time to ship the ECM) per ECM that you send in for the exchange process to be completed.