HP Tuners
HPT L5P ECM Upgrade (*Original ECM Required*)
SKU: H007 ECM-00-L5P-U
Description
Part #: ECM-00-L5P-U
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.
Features:
- No IMMO relearn
- No crank relearn
- No "Replace ECM" function
HP Tuners L5P - ECM Upgrade Service
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
Fitment Guaranteed
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | HP Tuners |
| Part Number | H007 ECM-00-L5P-U |
Videos
New Direct OBDII Upgrade for L5P/L5D Custom Tuning | HP Tuners
L5P Switch-On-The-Fly ECM Tuning for the 2017+ 6.6L Duramax!
Remote Tuning for 2017+ L5P Duramax Trucks NOW AVAILABLE!
Everything you need to know about HP Tuners' ECM and PCM Services
L5P Unlock At Home With HPTuners E41 Unlock Tool Tutorial!
How To Tune And Unlock Your L5P ECM With HP Tuners
L5P ECM / TCM Removal And Replacement
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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