Answer
Apr 01, 2026 - 09:18 AM
No, there is not programming needed for these FICMs. They are plug & play, ready to install and drive.
Do you have to reprogram the FICM after install? Diamond T New FICM for Chevy/GMC (2001-04) 6.6L Duramax LB7
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Open Apr 01, 2026 - 08:45 AM
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Diamond T New FICM for Chevy/GMC (2001-04) 6.6L Duramax LB7
Upgrade your 2001-2004 Chevy/GMC 6.6L Duramax LB7 with the all-new, American-made Diamond T FICM. This upgraded, brand-new module delivers unmatched reliability, performance, and comes with a lifetime warranty.
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