# 2001 Chevrolet Silverado 1500 - Heating issue

**URL:** <https://community.cartalk.com/t/2001-chevrolet-silverado-1500-heating-issue/128084>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [November 2, 2018, 1:00pm UTC](https://community.cartalk.com/t/2001-chevrolet-silverado-1500-heating-issue/128084 "2018-11-02T13:00:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![steve40](https://avatars.discourse-cdn.com/v4/letter/s/e19adc/32.png) [@steve40](https://community.cartalk.com/u/steve40)\
**Post date:** [November 2, 2018, 1:00pm UTC](https://community.cartalk.com/t/2001-chevrolet-silverado-1500-heating-issue/128084/1 "2018-11-02T13:00:42Z")

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heater blowing cold air ,climate control working ,actuator door working,water going into core hot coming out cold

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [November 3, 2018, 5:11am UTC](https://community.cartalk.com/t/2001-chevrolet-silverado-1500-heating-issue/128084/2 "2018-11-03T05:11:08Z")

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Coolant constantly flows through your heater core, whether you want heat or not

> [@steve40](#):
>
> actuator door working

So you’re talking about the blend door actuator . . . ?

> [@steve40](#):
>
> water going into core hot coming out cold

So you’re saying one heater hose is hot, while the other is cold . . . ?

Assuming the engine had reached proper operating temperature when you made that statement . . . your heater core is at least partially plugged, maybe completely