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Climate Control

Blower not working

Climate Control

Postby Black05 [OP] » Dec 19 2010, 7:01pm

Everything has been fine till the other morning. I have a 05 silverado with dual climate control and also the auto feature. As of right now if you try to increase the blower speed nothing happens. Air will push through the vents at driving speed. Ive checked the hvac fuses, heater fuse, blower fuse and all looks good. Any help with be greatly appreciated.
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Re: Climate Control

Postby bubbasparks » Dec 19 2010, 7:33pm

If all fuses are good "did you check them with a test light" check to see if you have power at the motor.
IF YOUR NOT FIRST YOUR LAST, SHAKE AND BAKE
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Re: Climate Control

Postby Black05 [OP] » Dec 21 2010, 2:52am

Update::
So i was driving around and the blower worked for a minute or two. It wouldn't reach full power but it was actually blowing a/c and heat. Now it isnt working again. Could it be the blower motor resistor? thanks
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Re: Climate Control

Postby bubbasparks » Dec 21 2010, 4:57am

Someone else had the almost same prob a couple days ago and the dealerships tech told him if the resistor went bad it would run at highspeed and not stop. Almost sounds to me like either the switch is bad or the motor. But im wanting to say switch. Time to bust out an ohms meter and start checkn
IF YOUR NOT FIRST YOUR LAST, SHAKE AND BAKE
bubbasparks
Firing on 8 cylinders [L1]
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Re: Climate Control

Postby bubbasparks » Dec 21 2010, 5:01am

Or check in the search tab in the upper right with climate control and also blower motor to come up with some stuff
IF YOUR NOT FIRST YOUR LAST, SHAKE AND BAKE
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Re: Climate Control

Postby Black05 [OP] » Dec 21 2010, 5:33am

Thanks for the reply! Where is the switch located and what should it read? Also all the other features of the climate control work just not the power from the blower. Thanks
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Re: Climate Control

Postby bubbasparks » Dec 21 2010, 3:45pm

Best bet is to hit a local parts store and pick up a chiltons or haynes book. I had huge elec. problems in my 98 cherokee xj and I used a haynes book to fix everything.
IF YOUR NOT FIRST YOUR LAST, SHAKE AND BAKE
bubbasparks
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Re: Climate Control

Postby lzn197 » Dec 21 2010, 4:08pm

Does high blower work when commanded? And it stays on?
Gordon
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Re: Climate Control

Postby Black05 [OP] » Dec 22 2010, 12:21am

It does not work on the high setting or any for that matter. If u turn it on the only air flow thru the vent is while driving. Thanks for all the replys
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Re: Climate Control

Postby lzn197 » Dec 22 2010, 2:08am

Ok. The air flow through the vents while driving is not caused by the blower. It is just air flow from vehicle movement. As stated before, You need to get a test light or a voltmeter and check for voltage at the blower motor positive lead and verify the ground is good. If they both are ok then the blower motor is bad.
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