1998 Oldsmobile Bravada heater/air conditioning

1998 OLDSMOBILE BRAVADA
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SRNKA
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Heater problem
1998 Oldsmobile Bravada All Wheel Drive Automatic

My heater stopped working and only blows out hot air even when it is turned off. my a/c also now doesnt work . any ideas as to why or the problem?
Aug 23, 2010 at 1:26 PM
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WRENCHTECH
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I assume you meant the A/C stopped working. Has anyone recently disconnected or killed the battery?
Aug 23, 2010 at 3:10 PM
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SRNKA
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no not that I know of . The heater also does not work correctly. it basiclly blows hot air for 30 sec. then cold air 30 sec. and so on . there is a relay switch that i found below the glove box that i changed because it was making a ticking noise but did not solve the problem. when i unplugged it then it affected the back lights on the truck. so it continues to tick like a blinker is left on. this all happened at once so i dont know if it is related in any way? thanks
Aug 23, 2010 at 3:32 PM
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WRENCHTECH
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I would try pinching off one of your heater hoses so you can determine if it's a problem with the gas system or in the air controls inside.
Aug 23, 2010 at 3:39 PM
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