Question about 1999 Oldsmobile Bravada

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Low heat from heater

Fan works, engine temp ok, fluids are good, just not getting warm air
1999 bravada

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  • thunt6 Dec 18, 2008

    In extremely cold weather I get no heat...water temp ok...seems as if no water is circulating to the heater core...I'm suspecting water pump or temperature valve for the heater core. I don't know where this valve is, however. I do seem to get some heat when temps are above 30 degrees.

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Had same problem. Take off both hoses to the heater core at the fire wall. Using a garden hose with nozel flush with water on the "inlet hose" first(the one hot to touch) then flush the other side. A nasty blackish slim will come out. Oh, cover your distributor with a plastic bag first so it won't get wet. Put the hoses back on, set heat for full high and enjoy your nice warm bravada again!

Posted on Jan 18, 2009

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Sounds like the heater core needs to be changed out

Posted on Jan 03, 2009

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Valve is on firewall where the heater hoses enter firewall to heater core! maybe you should pressure flush the system that will slow up heat to!

Posted on Dec 24, 2008

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