Question about 2000 Oldsmobile Bravada

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The bravada heater will not heat up. it is blowing out cold air. both lines that go into the firewall are getting hot when heater is off.

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  • bowler_155
    bowler_155 Feb 07, 2013

    a friend of my wifes told her to use Lysal Bath&Tile Cleaner to unclog the heater core. what do you thank?

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  • 1,669 Answers

The good news is that the heater valve is open and the hoses are hot. The bad news is that the heater core is clogged. If it is not even warm, it needs to be replaced. If it does get at least a little warm that means it is partially clogged and could be flushed out.

Posted on Jan 22, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Heater blows cold air unless accelerating

See my posted question under 2001 Mercury Villager: "HEAT BLOWS COLD WHEN CAR IS IDLING" I got an answer from chuck943 about air pockets and it was very helpful.

Posted on Feb 25, 2009

autodr
  • 260 Answers

SOURCE: Olds silhouette heater blows cold air

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

shadtremonky
  • 353 Answers

SOURCE: 98 Bravada blows hot air out all the time

check for a vacuum leak at the actuator under the hood

Posted on Jun 24, 2009

  • 541 Answers

SOURCE: my heater only blows cold air i changed the heater

you may have a bad control valve or the vacum liner to the valve is broke, it will be inline in the heater core hoses and havd the vacum to the top of it. most newer ones are made out of plastic. if they do not open you will not get heat

Posted on Oct 27, 2009

miket756
  • 2702 Answers

SOURCE: heating problem driver side blowing hot air passanger side blcold

its likley to be the pipe has been riped off or fell off or its the flaps on the heater box its self not opening,,,have a look under the dash to fine any pipes that are off the heater box,,
anyhow, who cears if the passanger gets cold,,, its the driver who needs to keep warm!!!!
unless its the other half? or worse still its the mother in law!!!! ho ho ho!

Posted on Nov 05, 2009

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1 Answer

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If your fan works and your car is fairly new..meaning your heater core isn't dirty and full of craap...then it is the climate cotrol valve.
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