Question about 1998 Chevrolet Venture Cargo

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Ac/heater switch only works on 1 thru 4

Switch only works on 1 through 4 and sometimes just 1 through 3. When it does work very little air pressure flows through the air vents.

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Bad blower motor, common issue

Posted on Apr 13, 2009

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This is typical of a voltage resistor pack problem, it controls the different speeds of the fan.
I'm not familier with your Tahoe, but this is usually installed right in the air stream of the fan to keep it cool.
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OUR 04 TRAILBLAZER, THE A/C STOPPED WORKING, IT WOULD WORK SOMETIMES AND BLOW COLD AIR NOW NOTHING COMES OUT, OR THE HEATER TOO.. LITTLE AIR WILL PULL THROUGH IF ON THE HIGHWAY, I CAN HEAR IT CLICK OVER...


a couple of things,1 blower motor fuse.2 blower motor gone out.3 switch on fan speed control switch not sending signal to fans.after checking the fuses.next check theswitch on control panel.set ac or heater.if fan still doesnt come on then replace it.when it work and then stops working there are a lot of possiblities that caused the prob relay too not fliping over inside staying close loop.hope this helps.

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1997 Nissan 4 cylinder truck AC works excellent throwing snowballs cold air, then it will blow hot air. Relay switch and clutch has been replaced....Did not fix problem!


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Sounds like a control panel or A/C push control unit ! (electronics)
Here is section from repair manual . Download 2000 Nissan Altima Heater Air Condition Section HA PDF Manual 76...

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I have rear AC that works perfectly, but the front AC only blows hot air what do i do to fix it?


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2004 Ford F150 - AC/Heater blower speed 1 & 2 not working.


You might have a bad speed selector switch, or your blower motor resistor is faulty.

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Heater blows cold, and fan switch only works on 4 and 5


working on 4 and 5 speed that the resistor that broken cold air you got to move the selector to see the motor that move the trap hot and cold sometime when the motor was not move to the hot side for a long time its jam the motor on the passager side under dash put to hot and gently tap the motor tanks pierre

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Blower for AC/Heater stopped working


if you can reach the blower motor, it could be a worn out carbon brush of the blower motor. if they are, buy a set of carbon brush, learn how to replace them and it would be back running in no time. by the way, when you pull out the carbon brush holder, make sure you dont interchange the position. you can put them back wards and what would happen is the rotation will be reversed. either you reversed the carbon brush holder or just simply interchange the wires that are coming to the motor. i hope i was able to help...

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