# 2008 GMC Sierra 2500HD - A/C Problems

**URL:** <https://community.cartalk.com/t/2008-gmc-sierra-2500hd-a-c-problems/147750>\
**Category:** Maintenance/Repairs\
**Created:** [August 29, 2019, 5:42pm UTC](https://community.cartalk.com/t/2008-gmc-sierra-2500hd-a-c-problems/147750 "2019-08-29T17:42:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gerry37](https://avatars.discourse-cdn.com/v4/letter/g/f17d59/32.png) [@Gerry37](https://community.cartalk.com/u/Gerry37)\
**Post date:** [August 29, 2019, 5:42pm UTC](https://community.cartalk.com/t/2008-gmc-sierra-2500hd-a-c-problems/147750/1 "2019-08-29T17:42:40Z")

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my ac blows hot air at idle and ac light goes out…when driving is cold…ac serviced and no codes

2008 sierra 2500 crew cab diesel

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [August 29, 2019, 10:53pm UTC](https://community.cartalk.com/t/2008-gmc-sierra-2500hd-a-c-problems/147750/2 "2019-08-29T22:53:01Z")

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Is your radiator fan coming on?