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Heater Control working wrong way.....

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Old Sep 18, 2016 | 07:48 AM
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Question Heater Control working wrong way.....
Hi all,

My wife recently bought a 99'Blazer LT, and the heater control is working the wrong way round.

Cold is hot and hot is cold!!!!

Any ideas on what could cause this?

Thanks in advance for any help and advice
 
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Old Sep 18, 2016 | 08:52 AM
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Just found this thread which gives a bit more history

https://blazerforum.com/forum/2nd-ge...reverse-90989/

We bought the Blazer from Sera
 
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Old Sep 18, 2016 | 03:17 PM
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Sounds like some of the vacuum lines could have been hooked up wrong. I would look into that.
 
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Old Sep 18, 2016 | 04:34 PM
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Originally Posted by richphotos
Sounds like some of the vacuum lines could have been hooked up wrong. I would look into that.
Ok how easy is it to get to them and how will I know if they're wrong?

Thanks
 
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Old Sep 18, 2016 | 10:39 PM
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That i am not sure about. I know little about second gen blazers. In the first gen the vac lines were color coded (blue for cold, red for hot)
 
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