The AFM active fuel management will not shift from 8 cylenders to 4 on my 2011 Silver

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Aug 22, 2017 | 11:51 AM

Melvin Coleman

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The AFM active fuel management will not shift from 8 cylenders to 4 on my 2011 Silver

2011 Silverado truck

Aug 22, 2017 | 2:17 PM

Miami Son

CF Junior Member

Joined: Jul 2017

Posts: 80

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From: W. Palm Beach, FL

You might get more responses in the Silverado or Chevy Trucks forum. This is Suburbans and Tahoes.

Aug 22, 2017 | 4:38 PM

in2pro

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Joined: Apr 2008

Posts: 7,573

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From: Austin, Texas

Do you have it in Drive and not in 3?
Do you have any check engine lights on?
Do you have a custom tune?
Do you have an AFM disabler installed ?

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