2024-2026 Duramax L5P HP Tuners E42 ECM Global B Send-In Unlock Service

Unlock the full potential of your 2024-2026 Duramax L5P with the HP Tuners E42 Global B ECM Send-In Unlock Service, designed specifically for Custom Tuning using the HP Tuners VCM Suite software. This one-time, send-in upgrade service modifies your GM E42 Global B ECM (L5P) to enable advanced tuning and diagnostics, giving you complete control over your vehicle's performance.

Everything You Need to Tune Your 2024+ L5P ECM:

• Purchase this E42 Global B ECM Unlock Service.
• Download the latest VCM Suite BETA
• Purchase (8) Universal Credits (sold separately) to license your upgraded ECM.
• Ensure you have an RTD4 Device
• Purchase E42 Global B ECM Custom Tuning

Note: Universal Credits for licensing are not included in this service and must be purchased separately.

Important: TCMs with broken tabs will NOT be accepted for upgrades.

Shipping Information:
Send Your ECM To:
HP Tuners, LLC
ATTN: GM E42 ECM Service (L5P, Global B)
700 Eastwood Ln
Buffalo Grove, IL 60089

Customer Responsibility: 

Customers are responsible for shipping costs to HP Tuners. The checkout shipping charge covers return shipping of your upgraded ECM only.

How It Works:

1. Confirm and Purchase: Verify your vehicle’s compatibility and enter your truck’s VIN to add this service to your cart.
2. Complete Shipping Form: After ordering, fill out the shipping form provided in the email to you that will include your HP Tuners Order Number. Include the form in your package.
3. Package Your ECM: Remove the E42 Global B ECM from your vehicle and securely package it with the completed form.
4. Label Your Box: Write your HP Tuners Order Number on the outside of the shipping box.
5. Ship to HP Tuners: Use your preferred carrier to send the ECM to the address above. Shipping costs to HP Tuners are your responsibility.
6. ECM Upgrade: HP Tuners will upgrade your ECM for tuning and diagnostics, then ship it back to you within 3-5 business days (excluding shipping time).
7. Install and Tune: Reinstall your upgraded ECM, license it with (8) Universal Credits (sold separately), and start tuning with your RTD4 Device.
8. Purchase Custom Tuning.