L5P ECM Purchase / Exchange / Update

Modified on Thu, 26 Oct 2023 at 08:51 AM

The L5P ECM Service from HP Tuners gives you the power to tune your Chevrolet Silverado and GMC Sierra 2500/35006.6L Duramax. Take advantage of any of our three available options to calibrate, log, and scan via your vehicle's OBDII port. With any choice, you receive an E41 ECM that is compatible with MPVI2 (and later) interfaces and VCM Suite.

There are three options in this program:

Purchase: Purchase a new HP Tuners ECM, ready for VCM Suite.
Upgrade: Ship your factory ECM and receive it upgraded, ready for VCM Suite.
Exchange: Exchange your factory ECM for an upgraded ECM, ready for VCM Suite.

L5P New ECM Purchase

Purchase a new ECM from HP Tuners and keep your original. Ideal for enthusiasts who want their vehicles up and as quickly as possible. (No core needed).

New ECM Purchase:


ECM (E41) License:

8 Universal Credits

L5P New ECM Purchase – HP Tuners YouTube

L5P ECM Upgrade

Upgrade your existing E41 ECM without having to trade it in or purchase a new one. This option offers a direct servicing of your current ECM. You send it in, we get it ready for tuning, and send it back. (Requires core).

Advantages of the L5P ECM Unlock Service:

No need for an IMMO relearn
No crank relearn
No need to perform the Replace ECM Function in VCM Scanner. *


L5P ECM Upgrade Service:


ECM (E41) License:

8 Universal Credits

* As long as all of these items were completed before sending in your ECM.

L5P Exchange Service

Exchange your original ECM for one that is ready for tuning. Upon receipt of your current ECM, we'll ship a professionally enhanced module that's compatible with your vehicle. (Requires core).

L5P ECM Exchange Service:


ECM (E41) License:

8 Universal Credits

L5P ECM Exchange – HP Tuners YouTube

Notes on L5P Services

1. Your Purchased, Exchanged, or Upgraded E41 ECM can only be tuned via the OBDII port with an MPVI2/2+ (updated with the latest firmware), VCM Suite (version 4.3+), and an Internet connection.
2. No other tuning or calibration tools can be used with the ECM (including dealer reflash tools).
3. VCM Scanner, Dealer Diagnostic, and other diagnostic tools will continue to function normally.
4. VCM Suite (version 4.3+) can be used to return to the stock calibration and/or update to the latest stock calibration.
5. If purchasing a new ECM or participating in the ECM exchange, the Vehicle Anti-Theft System relearn (by a dealer tool) is required once the new ECM is installed.
6. If you are participating in the ECM exchange service, your ECM must be the original, functional module in its unopened and unmodified condition.
7. HP Tuners reserves the right to refuse any ECM exchange.

Exchange and Upgrade Instructions

When you select the L5P ECM Exchange Service, you will need to:

Provide your VIN.
Indicate the vehicle year, make, and model.
Perform the Replace ECM Function in VCM Scanner for the stock ECM.
Include the following information with your shipment on a separate sheet of paper:
Customer name
Customer address
Customer contact information (email and phone)
L5P ECM Exchange Service order #
If you are opting for a TCM (T87a) Service, please indicate so next to the order number
Specify whether the ECM is the original from the vehicle or a new/spare ECM.
Indicate your preferred UPS shipping method (the default shipping is UPS ground; however, expedited shipping is available via the checkout process).

Missing information will delay the ECM exchange process. Please ensure you follow the instructions above and review the installation instructions.

Shipping Instructions

The address to ship the ECM to for exchange is:

HP Tuners, LLC
ATT: L5P ECM Exchange
700 Eastwood Ln
Buffalo Grove, IL 60089

REMINDER: We will not return your original ECM. This service is an exchange. You will receive a traded-in, upgraded ECM in the transaction.

Any additional hardware ordered with this product will be shipped along with your exchanged ECM or TCM. To avoid any delays on other products, please create a separate order for those items.

CAUTION: The L5P ECM Purchase, Upgrade, and Exchange Services are completed at the owner's request. HP Tuners assumes no liability for any fault resulting from the installation or use of a new, upgraded, or exchanged ECM. HP Tuners is not responsible for the vehicle or any component or sub-system thereof. The ECM is installed, calibrated, and operated at the owner's risk. Should you experience any issues with your ECM, please contact for assistance and how to proceed.

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