# 2012 GMC Sierra 1500 - AFM Display

**URL:** <https://community.cartalk.com/t/2012-gmc-sierra-1500-afm-display/144923>\
**Category:** Maintenance/Repairs\
**Created:** [July 21, 2019, 3:15pm UTC](https://community.cartalk.com/t/2012-gmc-sierra-1500-afm-display/144923 "2019-07-21T15:15:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![AndrewDuncan](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@AndrewDuncan](https://community.cartalk.com/u/AndrewDuncan)\
**Post date:** [July 21, 2019, 3:15pm UTC](https://community.cartalk.com/t/2012-gmc-sierra-1500-afm-display/144923/1 "2019-07-21T15:15:30Z")

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Active Fuel Management display always reads 28 mpg no matter what. Does it need to be reset and how would I do that?

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [July 21, 2019, 5:23pm UTC](https://community.cartalk.com/t/2012-gmc-sierra-1500-afm-display/144923/2 "2019-07-21T17:23:51Z")

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Your owners manual tells alll…

If you don’t have one, you can download it online from GM…