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Active Fuel Management vs Dynamic Fuel Management Infographic

Zane

By Zane
in 2019-2025 Silverado & Sierra

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Thomcat Senior Enthusiast

Thomcat

Posted
Posted

An old post, but time has proved it valid. Seems GM got it right upgrading AFM to DFM.....seamless operation, can't tell how many cylinders are operating at any given time and don't care either. All I know is that when I punch it gives full power without any lag.

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Smitty
Smitty

I can tell the auto start \ stop is happening but it's so quick it's not a hindrance at all.  By the time you go from brake  to gas it's ready.  I do think the DFM helps as well.     I could live with

KARNUT
KARNUT

I can’t believe V-8 drivers or V6 drivers put up with it, especially for the little gains. I tested mine every way possible barely got a mile a gallon with it on. Got out of it as soon as possible. Ne

amxguy1970
amxguy1970

1 truck out of 8 and you are that sour? Failure rates are in the 1% give or take range, if that sours you enough be prepared for some other issues with the other manufacturers, just have to pick your

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