Brand New Fuel Injection Control Module (FICM) 6.6L Duramax LLY

Brand New 6.6L Duramax LLY FICM Replacement

If your 2004.5-2005 Chevrolet Silverado or GMC Sierra 2500HD/3500HD is suffering from severe injector misfires, rough idling, or a complete crank/no-start condition, your original Fuel Injection Control Module has likely failed. Because these modules sit directly on the engine block, extreme heat eventually destroys the original factory electronics. Instead of relying on aged, heavily degraded junkyard parts or temporary board-level repairs, upgrade to our completely brand-new duramax lly ficm replacement.

Unmatched Reliability: 2025 Production PCB

This new lly ficm is built from the ground up to eliminate the inherent flaws of the original factory units. It features a brand-new, 2025-production printed circuit board (PCB) completely manufactured in the USA, combined with genuine Bosch hardware components. This provides a vastly superior, dependable replacement designed for maximum service life.

Whether your truck is completely stock or heavily modified for towing and performance, this new Injector Driver Module restores proper fuel injector timing, smooth engine starting, and full power. Best of all, it is 100% Plug-and-Play. Simply bolt it onto your engine block and plug it in—no dealership programming or software flashing is required!

Key Benefits & Features

• Brand New PCB: This is NOT a board-level repair or a refurbished unit. It features a brand-new internal board.
• High-Quality Hardware: Assembled using genuine Bosch parts for OEM-level performance.
• Made in the USA: Proudly engineered and manufactured for maximum durability.
• Plug-n-Play: Installs instantly on 2004.5–2005 6.6L Duramax LLY engines.
• Full Warranty: Backed by our comprehensive replacement warranty.

Direct Replacement Part Numbers

This unit perfectly replaces the following OEM part numbers:

8973037511 | 0281011134 | 897307511 | 897307513 | 8973037513

Core Return Option (Save $100)

Keep your truck running now and send us your failed FICM later! Buy your replacement unit today. Once you install it, place your original, malfunctioning module in the box and ship it back to us. We will issue a $100 core refund after the returned core is received and inspected.

*Note: If a brand-new module is currently outside your budget, we also offer a professional mail-in repair service for your original unit at a lower cost.