2003 Impala blower fan not working

Tiny
POOL10FM
  • MEMBER
  • 2003 CHEVROLET IMPALA
  • 2WD
  • AUTOMATIC
  • 156,000 MILES
Just bought this impala. Discovered the blower fan only blows air when the key is in the ignition and turned to the right but if you start the engine the blower quits. With the engine off and the key turned right all 5 blower settings work also but start your engine and its dead again not blowing anything out the vents.

Not sure if this is the problem or not but when I went to check for blown fuses.I took the panel off of the drivers side fuse box and noticed that a red wire had been wrapped around the end of one of the prongs for the 10 fuse amp that is labeled as (cluster, body control module, data link connector fuse (battery) and reinserted into the panel with the wire wrapped around its prong. And I cant find any wiring diagrams that can tell me what this wire is supposed to be connected to.
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Wednesday, January 23rd, 2019 AT 1:09 PM

26 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good afternoon

This could be a failed blower resistor. I attached a picture for you.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

It is under the right side dash next to the blower motor.

As far as the wire, If it was added by someone, I need to know what it controls since it is not factory.

Can you upload a picture of the wire in the fuse block?

Roy
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Wednesday, January 23rd, 2019 AT 2:02 PM
Tiny
POOL10FM
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Im not sure what it controls but when you take the fuse out and put it back in you can hear something clicking or resetting or something. Ill take picts tomorrow
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Wednesday, January 23rd, 2019 AT 8:19 PM
Tiny
ASEMASTER6371
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Sounds like a plan

Roy
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Wednesday, January 23rd, 2019 AT 8:29 PM
Tiny
POOL10FM
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Here are the picts.
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Thursday, January 24th, 2019 AT 3:42 PM
Tiny
ASEMASTER6371
  • EXPERT
That looks like a butcher job.

If you disconnect that wire, what does not work?

Roy
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Thursday, January 24th, 2019 AT 4:25 PM
Tiny
POOL10FM
  • MEMBER
Yes.I agree.I got totally ripped off with this car. Thanks for your help by the way.I will go check to see if I can figure out what isnt working if its disconnected. Hopefully it will start. Its 2 degrees outside right now. Without windchill. If it doesnt ill get back to u as soon ad I can
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Friday, January 25th, 2019 AT 11:52 AM
Tiny
ASEMASTER6371
  • EXPERT
Your welcome

Always glad to help

Roy
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Friday, January 25th, 2019 AT 11:53 AM
Tiny
POOL10FM
  • MEMBER
Ok. Took the fuse out and tried starting it and it wouldnt start. Put the fuse back in and it started
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Friday, January 25th, 2019 AT 1:51 PM
Tiny
ASEMASTER6371
  • EXPERT
I did not say to take out the fuse at all. I said to remove that red wire and see what does not work.

Roy
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Friday, January 25th, 2019 AT 1:53 PM
Tiny
POOL10FM
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By the way. The wiring diagram is too fuzzy for me to read. Is there any way to fix that?
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-1
Friday, January 25th, 2019 AT 1:53 PM
Tiny
POOL10FM
  • MEMBER
If the resistor is bad woukd the blowrr work with the engine off but the key in the run (2 turns to the right)position?
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Friday, January 25th, 2019 AT 1:56 PM
Tiny
POOL10FM
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Oh. Ok. Will do that then. Sorry
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Friday, January 25th, 2019 AT 1:58 PM
Tiny
ASEMASTER6371
  • EXPERT
One thing at a time.

Remove the wire and see what is not working

Roy
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Friday, January 25th, 2019 AT 2:02 PM
Tiny
POOL10FM
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Everything besides the blower seems to work unless there is something im forgetting to check. The radio, headlights, door locks all work.
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Friday, January 25th, 2019 AT 2:02 PM
Tiny
POOL10FM
  • MEMBER
Windows and interior lights work
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Friday, January 25th, 2019 AT 2:04 PM
Tiny
ASEMASTER6371
  • EXPERT
Try these
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Friday, January 25th, 2019 AT 2:06 PM
Tiny
POOL10FM
  • MEMBER
If im reading that right. There is only one red wire and its for the AC? Right?
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Friday, January 25th, 2019 AT 2:20 PM
Tiny
ASEMASTER6371
  • EXPERT
Thats, not a factory wire.

Did the blower not work with it hooked up? This red wire is a mystery. Can you follow it to the other end?

Roy
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Friday, January 25th, 2019 AT 2:23 PM
Tiny
POOL10FM
  • MEMBER
The blower doesnt work either way. Ill see what I can do and if I can figure out where the other end of it is
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Friday, January 25th, 2019 AT 2:43 PM
Tiny
POOL10FM
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The ony time the blowrr works is when the engine is off and the key is in the run position
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Friday, January 25th, 2019 AT 2:44 PM

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