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Oldsmobile alero heater blower

The heater in my 2003 Alero is no longer working. When i turn the knob, nothing happens, just silence. I changed the fuse on #53 Hi\BLO MOT and now the fan blows on but on high level only. Im not sure as to which fuse I need to check for the heater? Also, if i check the fuse and the fuse is good, is it more than likely that i will need to replace the resistor?

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: 2000 OLDSMOBILE ALERO HEATER DOESNT WORK

did you say you replaced the resister or you did not? if you did not i would, but first i would run 12 volts strate from battery to heater motor and make sure motor runs if motor runs replace resister.

Posted on Jan 13, 2009

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SOURCE: blower fan not working correctly

It is the blower motor resistor and is located under the glovebox behind the blower motor.

Posted on Jan 13, 2009

michigan man
  • 3533 Answers

SOURCE: I need to know the location of the blower motor

under the dash on the passenger or under the hood on the passenger side

Posted on Apr 18, 2009

dttech
  • 4803 Answers

SOURCE: 1999 Oldsmobile Alero 3.4 ltr

There is a technical Service Bulletin that covers the exact thing you are describing. I would post a copy of the bulletin here, but it is copyrighted material, so I'll just give you the details....

Open the hood and remove the wiper arm assemblies. Remove the air inlet screen panel. Replace the foam seal that seals the inlet screen at the base of the windshield. (I have actually just sealed them with clear silicone before) When you reinstall the inlet screen, make sure that the lower lip on the winshield lace goes over the top of it. If it is on top of the window lace, it will make your problem worse, not better.

Posted on Feb 24, 2011

redds55
  • 2620 Answers

SOURCE: my 1999 alero fan will not work.I have replaced the blower motor and checked fuses and still nothing.The heat and air are working fine just not blowing.

Its either a bad connection on the blower motor resistor or a faulty blower motor resistor.These are known for over heating.

Posted on Oct 31, 2011

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Fuse for heater 2004 alero


So what's the problem ? your blower motor not working ? Not any speed ? There are two different circuit's , one for the slower speeds an one for high speed alone ! One fuse is in the end of the right Instrument panel fuse box , marked HVAC BLOWER fuse D 20 amp .The other fuse is in the under hood fuse box marked

Feb 11, 2015 | 2004 Oldsmobile Alero

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I have a 2001 alero oldsmobile. I replaced the blower knob, the blower motor an resistor an still my blower knob does not work at all please help!!!


alero's had a persistant problem of ac condesate building up inside heater box and rusting the blower drive motor shaft to the point it wont turn anymore id get a look at this first. if fan wont spin free with your fingers all them other parts arnt going to help you

Oct 24, 2014 | 2001 Oldsmobile Alero

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2003 Alero, heater won't shut off? Fan shuts off but can't turn heater off.


Faulty heater control valve.Its located under the hood on the passenger side in front of the firewall.

Oct 29, 2012 | 2003 Oldsmobile Alero

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2003 Alero, heater blower only works on the two highest position?


The blower motor is located on the passenger side of the vehicle next to the blower motor. Run the fan on high and listen for the blower motor location if in question. The resistor will be mounted into the heater case and held in by two screws.
Good Luck

Mar 12, 2010 | 2003 Oldsmobile Alero

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Blower will not work in lower speed positions.


the conector has 5 wires going into it and is right behind the blower motor on the bottom of the heater box

Jun 16, 2009 | 2003 Oldsmobile Alero

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Blower fan not working correctly


It is the blower motor resistor and is located under the glovebox behind the blower motor.

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2002 Oldsmobile Alero heating up


I happen to own a 2002 alero, and alot of people says the same thing about theirs. You may need to replace you head gasket and run more antifreeze than water.

Nov 01, 2008 | 2003 Oldsmobile Alero

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