Question about 2007 Chevrolet Cavalier

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The first two blower settings on my ac and heater fan control will not work. The two higher ones will without issue and the ac and heater will get cold and warm as accordingly. care is a chevery cavalier 2002 4 cyl LS model I did try the fan switch no issues with the switch.

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  • 1Tiger May 11, 2009

    How to reach those Resistors, please some one help.

  • Anonymous Mar 26, 2014

    The heater temp.control switch will switch to all the way cold if not set to all the way hot. No in between. When running the ac it will sometimes switch to hot on its own.

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The problem is the blower motor, yes, but on the Cavaliers there are four resistors. One for each setting. you need the resistors for settings one ane two replaced on the blower motor.

Posted on Aug 02, 2008

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The problem is blower motor located under dash above passenger feet.Kind of tough to get to but can be done

Posted on Aug 01, 2008

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2 Answers

Ac fan not working, ac is cold but fan won't blow air into cab...


check the fan itself to see if it works. check the heater fuse first! if all is ok, you probably have a bad heater fan resistor. to check blower, please go here on pc for info on blower. .cargurus.com/Cars/Discussion-t16272_ds569146

May 21, 2014 | Cars & Trucks

1 Answer

Heater fan not working


The three most common problems for heater fans are
  1. Burned-out blower motor resistor. This is usually located on the engine side of the firewall. Sometimes one section of the resistor is burned out but others are still good, so the blower only works on the highest speed settings. If you have a burned-out resistor, check the blower bearings to make sure they are not stiff and causing the motor to draw too much current.
  2. The blower is actually working, but either the intake vent is plugged (I've seen vehicles with the heater core completely blocked by dirt, leaves and insects that came in through the vent), or the heater door is stuck closed.
  3. The motor bearings have gone bad (see # 1). This can cause the fuse to blow, although the resistor usually fries first.
I'm not sure how your car's cabin environmental control system is fused. Check any fuse that might apply, such as Vent/AC, HTR, FAN, etc. Generally you can identify the state of a blade-type fuse by inspection without removing it. If you have a blown fuse, check the blower motor before wasting money on a new fuse that will probably blow. Like any fan, it's supposed to turn easily, and there should not be any roughness or side-slop in the bearings.

Nov 14, 2011 | 2004 Renault 181

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The ac is on full at all times, even when you adjust the fan hight. someone sayed i need a a/c auto amplifier. but i can't find that part


Good Evening, If I am translating this properly your fan only works on the high setting? And the other settings do not change the speed? If this is correct respond back and I will help as much as possible.

Nov 06, 2010 | 2001 Nissan Pathfinder

1 Answer

Heater does not work


Check heater fuse.
If fuse good - could be a failure of the blower fan motor or blower control switch.
If fuse bad - bad blower fan motor could have blown the fuse.
DO: check fuse, then blower motor.
Pricing: new blower motor: Duralast PM270 $43.99
new heater control switch: Duralast SW229 $46.99 (without
A/C).
I'd expect your blower resistor to be good - when they fail, the blower only will work on HIGH setting.

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Heat & AC blower (fan) does not come on. Just


if it worked on some settings and not on others then the blower motor resister has gone bad. its mounted on the heater box near the fan about half way up the heater box. they are cheap and easy to change. give that a try first

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1 Answer

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It may be your blower motor RESISTOR, in gm cars it may look like a card that is connected near the blower motor,under the dash, on most cars this is what gives you variable speeds, except on the HIGH speed is usually wired directly to the battery through a relay.

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1 Answer

2004 silverado for some reason the heater/ac control only works on the 5 setting and when the heat is on only blows out hot air on the passenger side and cold on the drivers. i have replaced the blower...


Well had the same issue on my duel climate controll 04 2500HD but changing the heater control solved the different temp.The only other thing would be your mixer door motor.There are two,one for DR side is probibly stuck..As far as the blower motor.The resister should have taken care of that.Sounds like you may have another bad one.May want to take a volt meter to the resister plug in and run you different fan speed just to make sure that you get voltage to the different conecters.

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3 Answers

Subject: 2004 isuzu rodeo...my ac/heater blower is not working


The resistors are in circuit only on the lower fan speed settings.
On the highest speed setting, power is switched directly to the fan motor.
Check fan power supply fuses,
Check power is available to the fan when high speed selected.
If all above OK, apply power directly to the motor to verify fan motor runs- if it doesn't the motor may need replacement/repair.

Jul 29, 2009 | 2004 Isuzu Rodeo

1 Answer

99 Yukon - Blower Motor Not Working


replace the A/C control head... very simple to do. Pop off the dash panel and pull the control head out... unplug the 3 harnesses and there you go.

Jun 02, 2009 | 1999 GMC Suburban

1 Answer

AIR CONDITIONING


heater controls could be gone

Jun 26, 2008 | 1999 Volkswagen Jetta

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