Question about 2001 Oldsmobile Alero

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My 2001 Olds Alero wont blow a/c or heat when I turn it on.

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  • baddazzgirli Jun 23, 2009

    Thank you so much, I'm on it.

  • baddazzgirli Jun 23, 2009

    How do I tell if it's the relay? Not sure what it looks like if it goes out

  • baddazzgirli Jun 24, 2009

    I guess I wasnt clear with my question. I meant to say how do I know if a relay went out? I know how to tell if a fuse is bad but how about a relay?



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Check the fuse, the relay and blower switch, thinking the fuse may be under the hood by the battery since it's a high amp system to run the blower. If everything is electrically sound, you may have a bad blower motor. If you go to Auto Zone, they should have the blower for much less then the dealer and they will have the step by step instructions to replacing the blower motor with common tools. Good luck and hope this helps.Keep me posted, be glad to help.

Posted on Jun 23, 2009

  • Harvey N Tawatao
    Harvey N Tawatao Jun 23, 2009

    The relay is under the hood with the fuse to the blower motor. Remove the fuse box cover and on the under side of the cover will be the information you need to know which fuse and realys are what. Good luck and keep me posted, And keep up the good work.

  • Harvey N Tawatao
    Harvey N Tawatao Jun 24, 2009

    The relay is one of the hardest thing to know if it has gone bad except for electrical problems that the unit that it's suppose to control fails. The relay may work great when it's still cool, but when it start's to heat up it may stick or not work after it heats up. The easiest way to check with out replacing the relay is to just switch the relay with another relay in the fuse box that runs the fuel pump or the third brake light. If the fuel pump stops working after a few minute or an hour then the relay is bad and just switch it back and replace it. I have a question, does the blower motor work on the highest setting??? and not on the other's. If the blower works on the highest setting, then it's going to be the blower motor resistor that has gone bad and it's common to go bad. It takes about 30 min to replace and cost around $40.00 at Auto Zone, and Auto Zone can give you the step by step instructions to replacing the resistor board with common tools. Keep me posted, oh and check the wire harness at the blower motor to before we replace the motor. 


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Check the knob on the dash. It seems to have 2 positions. I just fixed my daughters 2001 alero which had no heat when turned all the way to the right (hot) position. I took off the knob, roated it about 180 degrees and pushed it back in, now i have warm on the left and hot on the right. Seems to be like a summer and winter position for the knob. Thanks GM

Posted on Oct 04, 2009

  • b112keg Sep 12, 2011

    tried this and it will not work. The shaft and the knob both have a flat spot, so I can not turn the knob 180 and put back on, it only will fit one way.



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SOURCE: My 2002 Olds Alero the fan is loud and blows no heat

have to remove blower motor to clean out ,most of the time there is leaves in it.

Posted on Oct 11, 2009

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