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A/C Blower motor not working. PART 2.

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Old 08-07-2006, 05:08 PM
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540 vette
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Default A/C Blower motor not working. PART 2.

Well I replaced the resistor and the blower motor in my 99. The original motor was rusted on the inside and the pc board on the resistor was actually broken.
Replaced those parts with Delco ones, the new resistor switch was resistors instead of a pc board.and the blower motor was the same.

Well got it all together and nothing works Checked the maxi fuse for the blower, it was good. Any place else tp look?
Old 08-07-2006, 05:35 PM
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540 vette
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The red wire in the connector that powers the resistor switch has no power to it. If I jump out that wire to something hot, everything works. Is there another fuse or relay.
Old 08-07-2006, 08:52 PM
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Originally Posted by 540 vette
Well I replaced the resistor and the blower motor in my 99. The original motor was rusted on the inside and the pc board on the resistor was actually broken.
Replaced those parts with Delco ones, the new resistor switch was resistors instead of a pc board.and the blower motor was the same.

Well got it all together and nothing works Checked the maxi fuse for the blower, it was good. Any place else tp look?
look for a blower motor relay.had same problem with my cavalier.changed motor . turned out to be relay. which i found under the hood
Old 08-07-2006, 09:31 PM
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540 vette
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That sounds good,Do you know where under the hood. I don't have a repair manual for the car. Thanks for the input.
Old 08-08-2006, 07:04 AM
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ttt
Old 08-08-2006, 08:01 AM
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ajg1915
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Why don't you PM Bill Curlee. he knows alot about the electrical systems in these cars.

Here is link.

http://forums.corvetteforum.com/member.php?u=21968
Old 08-08-2006, 08:32 AM
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GUSTO14
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Originally Posted by ajg1915
Why don't you PM Bill Curlee. he knows alot about the electrical systems in these cars.

Here is link.

http://forums.corvetteforum.com/member.php?u=21968
Really he's the one to talk to on these...
http://forums.corvetteforum.com/showthread.php?t=896875

You mentioned rust on the blower motor, but you didn't mention the source of the water that caused the rust. Unfortunately this typically happens for one reason. The drain on your HVAC is plugged and water is backing up and flowing into the blower motor. Unfortunately a serious byproduct of this is that water then flows down on the BCM just below it. I would look at the BCM for any evidence of water and water induced corrosion. The BCM controls most of the HVAC functions and can easily be a problem. Regardless you need to address the problem of the water that caused the rust.

If you check Bill's sticky at the top of the page on electrical issues, you'll feel much more comfortable with your cars electrical system.

Good luck... GUSTO
Old 08-08-2006, 11:26 AM
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540 vette
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I sent a PM to bill. I don't think it,s a ground issue or a BCM.(no codes).
I think it may be a relay that blew or got messed up from the bad blower motor. As for the water issue, that is another problem to be fixed after this one.
Old 08-08-2006, 12:09 PM
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Old 09-05-2006, 12:57 PM
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Sethmo99
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Check the middle relay above the BCM in the passenger side footwell. I just dealt with the same problem in my 99 vert. There are only three of them so it should be easy to find, plus they are clipped on the topside to the dash assembly.
Old 09-05-2006, 03:38 PM
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Bill Dearborn
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Did you check the Blo Mot Maxi Fuse # 51 (30 amp fuse) in the Instrument Panel Electrical Center? It feeds the red wire.
Bill

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