GM E41 ECM Services (L5P)

Get your 2017+ Chevrolet Silverado and GMC Sierra 2500/3500 6.6L Duramax ready for tuning with ZackTuned’s specialized L5P ECM Service. Our service offers two flexible options to upgrade your L5P E41 ECM, allowing you to maximize your vehicle’s performance through advanced tuning capabilities.

Upgrade Service:

Our Upgrade Service is a convenient, one-time send-in option that enables full tuning functionality in VCM Suite (BETA). Simply remove your E41 ECM from your Silverado or Sierra, ship it to ZackTuned, and our team will professionally upgrade it to enable comprehensive tuning features. This service is ideal for those who want to retain their original ECM but enhance its capabilities for high-performance applications.

Advantages of the L5P ECM Upgrade Service:

• No IMMO Relearn Required: When reinstalling the ECM into the same vehicle, there is no need to perform an Immobilizer (IMMO) relearn, simplifying the process.
• No Crank Relearn Necessary: The crank relearn process is not required if the ECM is returned to its original vehicle.
• Streamlined Installation: Avoid the need to perform the "Replace ECM" function in VCM Scanner if the ECM is reinstalled into the original vehicle.

Processing Time: Please allow 1-3 business days for the upgrade service, excluding shipping time. This quick turnaround minimizes downtime, ensuring your vehicle is back on the road with enhanced performance capabilities as soon as possible.

New ECM Purchase:

For those looking to minimize vehicle downtime or in need of an upgraded ECM immediately, ZackTuned also offers the option to purchase a brand-new, fully upgraded E41 ECM. This option is perfect for enthusiasts who want to quickly enhance their vehicle’s performance without the wait time associated with the send-in service.

Both options provide full compatibility with VCM Suite and are designed to maximize your vehicle's tuning potential.

Important Note: For both services, ensure that the vehicle information provided is accurate to avoid delays in servicing or installation.

Unlock the true potential of your Chevrolet Silverado or GMC Sierra with ZackTuned’s professional L5P ECM Service. Choose between upgrading your existing ECM or purchasing a new, pre-upgraded ECM to enjoy superior performance and tuning capabilities.