GM E41 ECM Services (L5P)

ZackTuned offers specialized L5P ECM tuning services for 2017+ Chevrolet Silverado and GMC Sierra 2500/3500 6.6L Duramax models. Choose between our send-in or pre-upgraded ECM options to unlock advanced tuning capabilities and maximize your vehicle's performance.

Upgrade Service Options

1. Send-In Service

• Send your original E41 ECM to ZackTuned for a professional upgrade.
• Retains the original ECM while enabling full tuning functionality in VCM Suite (BETA).
• Key Benefits:
  • No IMMO Relearn: No need for an immobilizer relearn when reinstalled in the same vehicle.
  • No Crank Relearn: Avoid the crank relearn process if reinstalled in the original vehicle.
  • Easy Reinstallation: Skip the "Replace ECM" function in VCM Scanner after reinstallation.
• Processing Time: 1-3 business days (excluding shipping).

2. Pre-Upgraded ECM Purchase

• Purchase a brand-new, pre-upgraded E41 ECM, ready for tuning out of the box.
• Minimizes downtime by eliminating the need for the send-in process.

Compatibility

Both options are fully compatible with VCM Suite and tailored to maximize your Duramax’s performance potential.

Important Note

Ensure accurate vehicle information is provided during checkout to avoid delays in service or installation.