# 2011 Chevrolet Silverado 2500HD - MAF+EGR = Unhappy car

**URL:** <https://community.cartalk.com/t/2011-chevrolet-silverado-2500hd-maf-egr-unhappy-car/187663>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, engines\
**Created:** [November 30, 2022, 12:02am UTC](https://community.cartalk.com/t/2011-chevrolet-silverado-2500hd-maf-egr-unhappy-car/187663 "2022-11-30T00:02:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![JamesHayes](https://avatars.discourse-cdn.com/v4/letter/j/ed8c4c/32.png) [@JamesHayes](https://community.cartalk.com/u/JamesHayes)\
**Post date:** [November 30, 2022, 12:02am UTC](https://community.cartalk.com/t/2011-chevrolet-silverado-2500hd-maf-egr-unhappy-car/187663/1 "2022-11-30T00:02:14Z")

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mass air flow sensor and an EGR code

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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:** [November 30, 2022, 10:24pm UTC](https://community.cartalk.com/t/2011-chevrolet-silverado-2500hd-maf-egr-unhappy-car/187663/3 "2022-11-30T22:24:26Z")

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> [@JamesHayes](#):
>
> mass air flow sensor and an EGR code

Then maybe you should try fixing this.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [November 30, 2022, 10:29pm UTC](https://community.cartalk.com/t/2011-chevrolet-silverado-2500hd-maf-egr-unhappy-car/187663/4 "2022-11-30T22:29:47Z")

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I’m guessing those are two separate problems. Suggest to post the actual P-code numbers for more help here.