Description
L5P ECM Upgrade (*VIN & Original ECM Required*)
Get your 2017+ Chevrolet Silverado and GMC Sierra 2500/3500 6.6L Duramax ready for tuning with HP Tuners E41 ECM Upgrade service. Upgrade your original E41 ECM for tuning and diagnostics via this send-in, one-time service. Simply send HP Tuners your original E41 ECM and we’ll upgrade it for tuning and diagnostics.
JBTools.com Return Policy
- Digital Sales: All digital product sales are final. Please confirm product compatibility before purchasing. If you have questions, email us at — we’re happy to help.
- Opened Items: Returns are not accepted for opened HP Tuners boxes. If your HP Tuners product doesn’t meet expectations, contact us at so we can help resolve the issue.
- Upgraded Vehicle Control Modules: These are non-returnable under any circumstances.
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