Question about Chevrolet 1500

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Heater/ a/c blower motor only works on low speed no matter what speed its set at

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  • Anonymous Mar 14, 2014

    motor ran on low speed only this morning now it doesn't run at all

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It is a blower resistor set. This resistor set regulates current which gives you the various fan speed settings. Depending on the vehicle it is located under the dash on either passenger or driver's side.

Posted on Dec 05, 2008

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1 Answer

Heater motor barely works on high. wont work on low or med. settings


blower is not running full speed? on high?
the blower has this resistor block on many cars,
that fail, easy. (burn up) but not ever on high. (bypassed then)
a big clue that. no?
is the blower slow or just dampers closed and cant feel it.
surly you know the sound of your blower on high, sound !
air flow is a whole other more complex matter.
also is battery rested voltage at 12.6v? if not you have discharged battery making fan weak ( power = volts times current. so....)

Jan 09, 2015 | 2001 Isuzu Trooper

1 Answer

Heater blower only works on high


Most likely the blower motor resistor or the fise for the low speeds. The high setting for the blower motor is on a separate circuit than the other lower settings.

Dec 04, 2013 | 2008 Chevrolet Hhr

1 Answer

My heater blowers dnt work and i need to knw where i can locate the resister blocks for my heater blowers so i can ghange them


Its located under dash,or near glove box.

The dash panel lower side has to be out.

HEATER BLOWER MOTOR


Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

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These will help.

Thanks.

Nov 28, 2012 | Cars & Trucks

1 Answer

Heater is not working


HEATER BLOWER MOTOR


Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.


It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.


=======

For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

------------

These will help.

Thanks.

Nov 28, 2012 | 1988 Honda Accord 4 Door

1 Answer

Location for blower motor/heater/fan fuse?


Before you rip, check the 30A HEATER CIRCUIT BREAKER in the instrument panel fuse panel. The input is hot with the engine running. CB output connects directly to the heater blower motor. A cluster of heater blower motor resistors determines blower speed as selected by the blower switch in the heater control assembly. The switch setting is sent to the powertrain control module (PCM) which acts to turn the blower motor on at the selected speed.

Sep 22, 2012 | 1994 Ford Escort

1 Answer

One day, out of the blue, my heater stopped blowing air. I can feel that the air is warm, but it doesn't blow an air; no matter where i have the blower set (high, low, etc). What could this be, is it an...


With the key on and the blower speed set to high tap the blower motor with a rubber mallet. The key word is tap! If the blower starts working it will need to be replaced.

The blower is located under the passenger side of the dash right above where the passengers feet would be. There is usually a plastic cover that needs to be removed to gain access to the blower motor.

Dec 16, 2010 | 2004 Pontiac Grand Prix

1 Answer

On my 1994 S-10 Blazer, the AC/Heater stopped blowing on high speed about 2 years ago. By switching the speed control quickly back and forth, sometimes High would work. But not anymore. I had the A/C...


Sometimes the electrical connecter burns on the back side of your switch. You can get just the switch and replace it and repair the connecter when possible.

Aug 12, 2010 | Chevrolet S 10 Cars & Trucks

2 Answers

Heater blower only blows on low


This could be a few different things:

1.Check the power and ground connections on your blower motor, corrosion can cause high resistance and a slow blower speed.

2. Check your available voltage at the blower motor on the different settings. it should vary with high supplying 12volts, make sure to do this check with the blower motor still plugged in.

3. Connect the blower to a 12v power source and see if it runs at high speed.

If all else fails i would check your resistor pack, i would not suspect this because when it fails you usually just loose all speeds except for high, but it could happen.

Feb 25, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

2002 saturn heater


The problem is the blower motor speed control resistor, it is located near the blower motor in the housing.

Nov 23, 2008 | 2002 Saturn Sl

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