What do I need to delete my L5P Duramax?Updated 7 hours ago
The 2017+ Duramax L5P Pickup trucks require:
- The ECM to be unlocked,
- You can use the E41 upgrade kit or a new year-specific unlocked ECM to be purchased. We offer both but recommend the unlock tool.
- HP Tuners MPVI3 OBD Device.
- 8 Tuning Credits.
- A year-specific CAN plug kit.
- A DPF-delete pipe, or full delete-exhaust.
- The EGR to be unplugged (or removed ideally).
- A Tune package.
- Your ECM must be clear of any emissions-related DTC codes
- YOU ALSO NEED A WINDOWS COMPUTER
Buy Duramax L5P All in one Delete Kit
GM Duramax L5P All-In-One DPF/DEF/EGR Delete Kit (2017–2025)
We’ve bundled everything you need into one complete package, including all EGR removal components, the CAT delete pipe/exhaust, and a tuner loaded with custom tune files specifically for your truck. Simply click Buy Now to purchase the full L5P Delete kit.
If you purchased a new unlocked ECM click here for the guide ➤
If you purchased the E41 unlock tool to unlock your factory ECM click here for the guide ➤
Once you have the parts you will need to install the LATEST version of VCM Suite BETA so you can send us a read file and info log, these files are needed to create your tune.
You Do Not need the HP Tuners TDN phone app, just the VCM Windows software.
Once you get your tune file(s) back, you will need to load them before proceeding with any mechanical work.
This is just a summary, Full, detailed steps are available in our Guides ➤.
Note: The throttle valve must remain Plugged In.
Why We Recommend the E41 Unlock Tool
Our AIO kits include the HP Tuners E41 Unlock Tool, because unlocking your factory ECM is the most reliable method.
Customers who replace the ECM often run into issues such as:
- Needing to perform a Crank Relearn
- Having to get the immobilizer reprogrammed at the dealership
- Extra steps during setup
The E41 unlock tool:
- Does not use credits
- Can be used on multiple E41 ECMs
- Avoids dealership programming
- Provides the smoothest tuning experience