Got the same problem but reverse the low n medium blower dnt work only high what the problem on on 98 gmc truck

2009 dodge avenger blower motor works on low, medium ...

www.fixya.com/.../t21143783-2009_dodge_avenger_blower_motor_wo...

Nov 2, 2013 - 2009 dodge avenger blower motor works on low, medium low,medium high but not high. Resister has ... SOURCE: Dodge 2001 Stratus - A/C fanonly blows on High ... working. Jan 04, 2010 ' 2003 Dodge Durango · 1 Answer ...

On any other vehicle it sounds like the blower fan switch.
The fan switch provides power or ground to the resistor and there would be a high speed blower relay to bypass the resistor.
But in your case the fan switch is part of the controller.
I don't have a diagram for a 92 but the 94 model shows relays for low medium and high speeds. Each relay gets power from a fuseable link. The high relay gets power thru the low relay if the low relay is not engaged.
If you have the model with 3 relays you may need to check them.

Hi Jim, If the vehicle is fitted with climate control it will have electronic management. However it can be wired by someone knowing electrical circuitry to by pass the control. It will save you some cash but will need manual control. Make sure whoever does the job knows what he or she is doing. Have a happy new year. Regards John

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.

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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.

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

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

These will help.

Thanks.

Under dash panel,or behind glove box on most of vehicles.

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.

hi,

found this for you..

https://www.2carpros.com/questions/gmc-jimmy-1996-gmc-jimmy-heater-blower-motor-not-working

The blower motor resistor is the problem. Remove the glove box door from the dash. The resistor is located to the left of the blower motor. Disconnect the plug from the resistor and the two mounting screws. Remove resistor and replace with neew resistor. Installation is the reverse of removal. Hope this will help.

There are two relays for the heater control fan,a low blower relay and a high blower relay.It sounds like the hi blower relay is bad.

Replace the blower resistor.