# Hot & cold.....help!

**URL:** <https://community.cartalk.com/t/hot-cold-help/55553>\
**Category:** Maintenance/Repairs\
**Tags:** doors, chevrolet, tahoe, heating, airconditioning\
**Created:** [September 25, 2010, 1:25pm UTC](https://community.cartalk.com/t/hot-cold-help/55553 "2010-09-25T13:25:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![autumn1157](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@autumn1157](https://community.cartalk.com/u/autumn1157)\
**Post date:** [September 25, 2010, 1:25pm UTC](https://community.cartalk.com/t/hot-cold-help/55553/1 "2010-09-25T13:25:58Z")

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it is the record-breaking summer of 2010, and suddenly the a/c on my 2004 Tahoe randomly decides to switch from nice cool air to blasting heat! The only way I have found to deal with this issue so far is to pull over, turn off the engine, wait a few seconds, and restart. This is completely unpredictable but fairly annoying…especially when I am on the highway where cutting off the juice becomes more problematic. Anyone have similar experience and advice to share? Thanks…

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [September 25, 2010, 3:04pm UTC](https://community.cartalk.com/t/hot-cold-help/55553/2 "2010-09-25T15:04:34Z")

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Take it to a shop that works on automotive AC. This is not a problem you’ll be able to diagnose or repair at home with a screwdriver and pair of pliars, nor will any additive help. You need a specialist with special tools and equipment.

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**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\
**Post date:** [September 25, 2010, 3:10pm UTC](https://community.cartalk.com/t/hot-cold-help/55553/3 "2010-09-25T15:10:29Z")

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As usual, Mountainbike has hit the nail on the head. Follow his advice.

This is not a DIY.

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**Author:** ![autumn1157](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@autumn1157](https://community.cartalk.com/u/autumn1157)\
**Post date:** [September 25, 2010, 3:16pm UTC](https://community.cartalk.com/t/hot-cold-help/55553/4 "2010-09-25T15:16:53Z")

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thanks for your reply; just curious as to whether any other users/owners of 2004 Tahoe’s are experiencing similar issues. Maybe this is a recall item…like the stuck speedometer problem from a year or so ago?

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [September 25, 2010, 3:44pm UTC](https://community.cartalk.com/t/hot-cold-help/55553/5 "2010-09-25T15:44:22Z")

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You can search for TSBs if you’d like, but in a 6+ year old truc I would not consider need for AC work to be abnormal. And it’ll never be covered under any extended TSB or recall notice because it simply isn’t a safety issue.