99 GMC Suburban blower motor resister

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WeeBey
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99 GMC Suburban blower motor resister

Post by WeeBey »

The blower motor on my 99 Suburban runs on the highest level only. I have read that it is one of three things (high speed blower relay, blower resistor OR the HVAC controller). I started with changing out the blower resister and not only did the heat still only work on the highest level it did that with and with out the resister being plugged in. :dontknow:

Thanks in advance for all help.
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WeeBey
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98 Bonneville SE

Re: 99 GMC Suburban blower motor resister

Post by WeeBey »

Problem solved:

In case someone else runs into this problem on their truck, the HVAC Controller (switch) was bad, and nothing else.
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harofreak00
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Re: 99 GMC Suburban blower motor resister

Post by harofreak00 »

Now you got me second guessing my problem.

http://www.pontiacbonnevilleclub.com/fo ... 10&t=23359

How much was that switch you got?
Andrew - owner/operator of Bonnevilles Unlimited
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00Beast
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Re: 99 GMC Suburban blower motor resister

Post by 00Beast »

Same thing happened on our 2k 1500, it was the switch panel, not the resistor, however the resistor had gone out before. The only way to know is to replace one, and if it wasn't the problem, you replace the other, or get a Tech II and screw with it.
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