Why is my blower not working on speed 5?

If your blower is not working on speed 5 then the blow motor resistor (I think its called that) is burnt and you need a new one. It is a 5 minute fix.

Why is my suburban AC blowing hot air?

My 2005 suburban AC is blowing hot air; one minute it was blowing out cool air and then it started blowing as if the heat was on…. Clicking this will make more experts see the question and we will remind you when it gets answered. You can’t post conmments that contain an email address. An expert who has achieved level 1.

Why does my GM front blower not shut off?

GM has issued a technical service bulletin (TSB) #06-01-39-002B to address problems with the front blower motor. In some cases in cold weather the blower motor may not run, or if it does, it may not shut off when you turn off the vehicle. The TSB applies to the following vehicles with automatic temperature control:

Why is my Silverado Sierra blower not working?

Additional Info: The resistor makes a clicking sound when the control knob is turned to setting five. Another thread suggested that the contact plug may be burnt and need cleaning/replacing. That would restrict power flow. Got the same problem with mine on 2nd highest setting, gonna look into it in spring.

Where is the relay on a blower motor?

It is a five terminal relay. Normally closed allows power from the relay pack to the blower motor, but when energized it switches to allow direct battery voltage to the motor for full speed operation. And I believe, but cannot be sure, the relay may be located near the resistor pack and that might be the clicking you hear.

Why is my blower not working in Hi ( 5 )?

The usual failure of the resistor pack is if it works in HI (5) but not in any other mode or just a few modes. When you switch to high,the blower motor relay coil circuit is grounded and voltage is now applied directly through the relay to the blower motor; bypassing the resistors. So, I would look to see if the relay is ok.

What happens to the relay on a blower?

When you switch to high,the blower motor relay coil circuit is grounded and voltage is now applied directly through the relay to the blower motor; bypassing the resistors. So, I would look to see if the relay is ok.

If your blower is not working on speed 5 then the blow motor resistor (I think its called that) is burnt and you need a new one. It is a 5 minute fix.

What are the symptoms of a failed blower motor resistor?

Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.

How does a 3 speed blower motor work?

Older style blower motor resistor with exposed resistor elements. The blower motor resistor is what’s responsible for giving you three blower speeds. The resistor block contains three different high resistance coils. Think of these coils like a filament in a light bulb.

What to do if your AC blower motor stops working?

Had the same problem, You Need a volt meter and need to “Know How to Use It” to fine this one. Take readings at the motor connector when it is working right and write them down on paper, when it stops working again, take the readings again.

How is the speed of the blower motor controlled?

The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.

How can I tell if my blower motor has a problem?

Press and hold the OFF button and within 10 seconds press and release the Window Defogger button five times. The system enters the self-diagnostic mode and at the end of it, if there is a problem, the fault code will be displayed on the display.

Why does my heater not work on high speed?

Heater blower motor will not work on high speed? I have replaced the black bosch relay behind the glovebox, the blower resistor and the blower motor and still cannot get the blower to work on high. I remember in older model years of gmc’s and chevys that their was a high speed blower relay that caused this issue.

What to do if your heater fan does not work?

Now gently grab ahold of the red and black wire connector and wiggle it if your fan came on you have found the problem. Now if this worked for you remove the positive battery wire from the battery because the red wire at this connector remains hot.

Why does my GMC heater blower not work?

I have replaced the black bosch relay behind the glovebox, the blower resistor and the blower motor and still cannot get the blower to work on high. I remember in older model years of gmc’s and chevys that their was a high speed blower relay that caused this issue. If there is a high speed relay, I can’t find it. Any suggestions?

Why is my Chevy Silverado heater not working?

While there are a variety of reasons your Chevrolet Silverado 2500 HD heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

How does a high speed blower motor work?

In the highest fan speed state, the blower resistor is bypassed completely and the fan is effectively connected directly to the car’s battery, allowing maximum current to be supplied to the blower motor.

Why does my AC fan only work on high?

If your speed selector for your AC or Heat only works on high, or low, or if its missing any particular speed, this video will show you how to fix it once and for all. This is a fix for 2nd generation Dodge Rams (1994-2001-2002 2500/3500) Loading…

Why is there no fan speed on my Silverado?

Just bought my first Silverado last November. The HVAC fan speed works on 1, 2 & 3, but not 4 or 5. I read somewhere that it could be a resistor problem. Last winter the resistor died on my D**** Caravan (darn mouse built a nest in it, if you can believe that). However, as opposed to the Silverado, here I had no fan at any speed.

What does it mean when your radiator fan is not working?

This is what we call a blown fuse. A blown fuse is no big deal, and changing one does not cost a lot of money. If your car’s radiator fan is non-functional, check your car’s user manual and locate the fuse for the radiator fan controller or the fan.

How can I tell if my floor fan has been tripped?

To do this, open your breaker panel and look to see if the circuit breaker has been tripped. You’ll be able to tell because the thick, black switch will be moved to the “off” position. If you’re not sure which circuit controls which rooms, just check to see if any are out of place.

What should I do if my blower motor stops?

Replace blower motor. If you have a variable speed blower motor, replace the blower motor speed control module. If you have a three or four speed blower motor, remove the blower motor relay. If the motor stops, replace the relay. Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period.

Is the blower motor on a Chevy Silverado working?

Blower Motor does not work on 1 and 2 speed chevy silverado – YouTube I had a Bad Relay. I got one here https://amzn.to/2PSr6fQ It seems the 88-94Trucks have a different system to control the speeds than the 96-00 OBS style Ch…

Why is my blower not working on speed 5?