In the case of the 5.3-liter V8, DFM translates to one mile to the gallon more driving range on the combined cycle versus the previous generation with AFM and the eight-speed automatic transmission.

2021 – 2024 Chevy Tahoe 2021 – 2024 Chevy Suburban 2021 – 2024 GMC Yukon / Yukon XL 2021 – 2024 Cadillac Escalade / Escalade ESV This DFM Module works is for the 5.3L V8 L84 and the 6.2L ...

A little-known trick disables DFM, or Dynamic Fuel Management, in the Chevy Silverado 1500 pickup as well as the Tahoe and Suburban full-size SUVs.