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HP Tuners exclusively presents our L5P ECM Exchange Service, giving you the power to tune your 2017 and up Chevrolet Silverado / GMC Sierra 2500/3500 6.6L Duramax. Simply send us your ECM (or a new spare one, preferred) and we will exchange it for a HP Tuners modified ECM giving you full access to calibrate, log and scan via the OBD2 port with your MPVI2 and VCM Suite 4!

L5P Exchange Service Details
Below is some important information to consider when purchasing the L5P ECM Exchange:

  • Your exchanged L5P ECM can only be tuned via the OBD2 port with HP Tuners VCM Suite 4 and an MPVI2
  • To tune your L5P ECM you require 10 Universal Credits, an MPVI2, the latest version of VCM Suite and an internet connection
  • No other tuning or calibration tools can be used with the ECM (including dealer reflash tools)
  • VCM Scanner, dealer diagnostic and other diagnostic tools will continue to function normally
  • VCM Suite 4 can be used to return to stock calibration and/or update to the latest stock calibration
  • Once you have placed your order and provided your VIN, you must send us either your original ECM or a spare (preferred) first
  • The ECM must be in functional, original, unopened and unmodified condition
  • You will not receive this same ECM back as this is an exchange service only. The ECM you receive has been modified to enable tuning
  • Vehicle Anti-Theft System relearn by a dealer tool is required once the ECM is returned to the vehicle
  • Please also allow at least 3 business days for this exchange service not including shipping times
  • HP Tuners reserves the right to refuse exchange of any ECM sent to us as part of this service

The address to ship the ECM to for exchange is:

  • HP Tuners, LLC
  • 701 Dartmouth Ln
  • Buffalo Grove, IL 60089

Exchange Requirements

  • When you send in the ECM, you Must include the following:
  • Provide your VIN in the cell above
  • Perform the Replace ECM Function in VCM Scanner for the stock ECM
  • Customer Name
  • Customer Address
  • Customer Contact Information (E-mail and Phone)
  • L5P ECM Exchange Service Order Number
  • If you are also providing your TCM (T87a) for unlock, please also provide your order number
  • Whether the ECM is the original from the vehicle or a new spare ECM
  • Vehicle Information (Year/Make/Model)

If the information above is not provided with the ECM, it may delay the ECM exchange process while the missing information is acquired. Please ensure your follow both the above instructions when placing your order and review the installation instructions here.

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 HP Tuners Support 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.

******2022 Trucks require the use of a 2022 ECM******


  • L5P ECM Echange Service
  • GM Duramax Engine
  • Sold Individually
  • SKU: ECM-00-L5P


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