Question about 2001 Oldsmobile Silhouette

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Olds silhouette heater blows cold air

What can you check on Oldsmobile Silhouette 2001 will not blow hot air?
We replaced thermostat already .
Gaskets have been changed 2 years ago.


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  • carolinenero Nov 16, 2008

    The engine temperature is normal so I can I locate and flush the heater core.

    Do you have a diagram or can you give me more details on how to proceed.

    Thank you so much in advance!

  • eightstages Apr 12, 2009

    heater blows cold air, i have replaced the fuse

  • Anonymous Mar 12, 2014

    how much will it cost

  • Anonymous Mar 24, 2014

    no heat coming out

  • Anonymous Mar 30, 2014

    rear quarter windows don't open up any more, but worked fine all last year and now won't open now

  • Anonymous Mar 30, 2014

    worked fine all last year

  • Anonymous Mar 30, 2014

    for head gasket replacement


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As long as the engine temperature is normal, i would suspect a clogged heater core, the dex-cool antifreeze is notorious for building up deposits in cooling system. have heater core flushed first to see if it makes any difference

Posted on Nov 16, 2008

  • autodr
    autodr Nov 16, 2008

    there are 2 rubber hoses probably side by side on firewall inside engine compartment on pass. side. however is the easiest way to disconnect the hoses to flush out one way then the other. you want to separate the heater core from the eingine to make it easier. a pressure washer works well.


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There is not enough antifreeze in the radiatar. while the engine is cool and on level ground take off the radiatar cap and start the engine. let it run for 15 to 30 min. after the engine starts to get to operating temp. start adding antifreeze keeping the level at the top of the radiatar. it may over spill but what you are doing is getting all the air out of the system. this should take care of the heating problem. i forgot to mention. you want to keep your heating on high during this process.

Posted on Feb 27, 2009

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Cathy C.

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