Question about 1993 GMC Suburban

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No heat blower works new stat,blows cold air front and back

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  • rchaffie Jan 25, 2009

    what is a system bleed?

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Do yourself a favour and perform a system Bleed! you have an air lock! want more info?
Get back to me!

Posted on Jan 25, 2009

  • Paul W
    Paul W Jan 27, 2009

    Hi,
    It appears this site is not forwarding my comments, Park vehicle on level ground, when cold remove coolant filler cap. Start engine leave to idle, have heater on full blower too, when at operating temp keep clear of coolant filler, listen and watch, hopefully it should gurgle/bubble then boil over. Top up with very warm water and let settle. You may need to do this a few times. Check for heat inside the vehicle. Drive but keep an eye on temp as still maybe a air lock elsewhere.
    There you go! Bleeding the system.
    Please press the blue button if sorted!
    Paul 'W' U.K.


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