# 2000 Jeep Heater control box

**URL:** <https://community.cartalk.com/t/2000-jeep-heater-control-box/21555>\
**Category:** Maintenance/Repairs\
**Created:** [November 2, 2008, 7:30pm UTC](https://community.cartalk.com/t/2000-jeep-heater-control-box/21555 "2008-11-02T19:30:25Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![heathwood](https://avatars.discourse-cdn.com/v4/letter/h/3bc359/32.png) [@heathwood](https://community.cartalk.com/u/heathwood)\
**Post date:** [November 2, 2008, 7:30pm UTC](https://community.cartalk.com/t/2000-jeep-heater-control-box/21555/1 "2008-11-02T19:30:25Z")

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I am located in the Chicagoland area and I have a 2000 Jeep Grand Cherokee. Since last winter, the heater has been off and on. Now it only blows cold air. I was told it needs a new heater control box. What should I expect to pay for this?  
  
 Is it worthwhile to look for a used part since the vehicle is 9 years old and has 140k miles on it?  
  
 Any help is appreciated.

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [November 2, 2008, 9:47pm UTC](https://community.cartalk.com/t/2000-jeep-heater-control-box/21555/2 "2008-11-02T21:47:51Z")

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I assume that the control for the box is controlled by vacuum air and that has been checked first before saying the box is bad.

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**Author:** ![heathwood](https://avatars.discourse-cdn.com/v4/letter/h/3bc359/32.png) [@heathwood](https://community.cartalk.com/u/heathwood)\
**Post date:** [November 3, 2008, 2:55pm UTC](https://community.cartalk.com/t/2000-jeep-heater-control-box/21555/3 "2008-11-03T14:55:09Z")

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I had it checked at a local Pepboys which I usually find reliable. Is there anything else that would cause the heater only to blow cold air?

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**Author:** ![eulessdave](https://avatars.discourse-cdn.com/v4/letter/e/e8c25b/32.png) [@eulessdave](https://community.cartalk.com/u/eulessdave)\
**Post date:** [November 30, 2009, 4:34pm UTC](https://community.cartalk.com/t/2000-jeep-heater-control-box/21555/4 "2009-11-30T16:34:05Z")

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Do a web search on Heater Treater - it’s a DIY fix for heater box issues. About $100.