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Oldsmobile alero heating not heat .

Not heat,blow only cool air, even when heat control is all on/

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You have a water diversion valve in line with one of the small three quarter heater hoses. Probably on or near dash. This valve is either not switching on when you choose heat or the valve is stuck or clogged.

Posted on Jan 01, 2014

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Posted on Jan 02, 2017

SOURCE: 2001 buick century driver side heat/cool problems

Sounds like a problem with the "Drivers side temp actuator motor".
Each side has a motor that controlls the temp. door inside the dash for the driver or passenger side. These motors are approx. $75, plus 1 hr. labor to install. See more info here...
http://www.greatautohelp.com/more-buick-questions.html

Posted on Oct 22, 2008

  • 24 Answers

SOURCE: heat works on driver side, passenger side blows cold air.

Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.

Posted on Jan 03, 2009

  • 1 Answer

SOURCE: I CAN EITHER HAVE AIR COND. OR HEAT

your actuatior valva is bad.you can order 1 from auto parts giant online for about 45 bucks the dealer wnats 240.00 that will give the heat and air back

Posted on Mar 08, 2009

  • 1 Answer

SOURCE: air conditioner problem with 2005 chevy 1500 silverado

I have the same problem exactly, if i turn off the ignition and then turn it back on it begins blowing cold air again. I would like to know what the problen is as it sounds like it is not unique to just my vehicle.

Posted on Oct 10, 2009

morse008
  • 1111 Answers

SOURCE: no heat blows cold

most likely either the vacuum line to the round ball is disconnected allowing the vacuum pressure from moving the inner levers to the heating unit of ....check your radiator fluid levels to ensure they are to specifications level ...or you may need a radiator flush to flush the heater-core as they become plugged from gunk also could be the line going into the heater has become lose you will need to get involved a bit under the dash to investigate this ....also the switch could be bad or yes by all means use a test light and see if your fuse has blown it may be as well vacuum lines under the hood has dry-rotted preventing proper vacuum to the unit

but it sounds as if you need to have the heater core flushed these are the areas in which i would start with first ...good luck and i hope this helps you

Posted on Dec 03, 2009

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I CAN EITHER HAVE AIR COND. OR HEAT


your actuatior valva is bad.you can order 1 from auto parts giant online for about 45 bucks the dealer wnats 240.00 that will give the heat and air back

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