Fuel Injection Control Module for Chevy/GMC (2001-04) 6.6L Duramax LB7

Give your 2001-2004 Chevy/GMC 6.6L Duramax LB7 the reliability and performance it deserves with the Diamond T Fuel Injection Control Module (FICM). Each unit is completely overhauled and upgraded to exceed OEM standards, ensuring it can handle everything from daily driving to aggressive modifications and performance tunes.

Backed by a lifetime repair warranty with 1st year replacement coverage, the Diamond T FICM delivers unmatched peace of mind. Common LB7 FICM failure points are fully addressed, making this module an essential upgrade for any Duramax owner looking to eliminate no-starts, stalling, or injector control issues.

Installation is straightforward thanks to plug-and-play compatibility and free programming to the latest calibrations-no dealer visit required. Plus, Diamond T makes the process easy by not requiring your core to be rebuildable for a refund, streamlining your replacement experience.

Whether you’re replacing a failed FICM or upgrading for future reliability, the Diamond T FICM is the trusted choice for diesel enthusiasts who demand the best for their LB7. American Made, Because It Matters.