Is the blower resistor on my GMC Sierra on fire?
This was preformed on a 2004 GMC Sierra with a blower resistor that had been on fire and melted the wiring. Loading…
Where is the blower motor resistor complete kit located?
This COMPLETE KIT includes the Blower Motor Resistor, New Wire Harness, Wire Harness Connectors, Screws, & Washer. The AC Blower Motor Resistor is located on lower passenger side dash and is easily accessible by removing a few screws.
Why does my GM blower motor resistor keep failing?
In some cases, the heat is so high that it melts the connector. This is common on late model GM vehicles. If you discover a melted connector, do NOT attempt repair. Purchase an upgraded pigtail and splice it into the harness along with a new blower motor resistor.
Where does the power go in a blower motor?
For each higher speed, power flows through one less resistor. Some car makers run blower motor power through the fan speed switch first, then through the blower motor resistor and then to the blower motor and ground. Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch.
This was preformed on a 2004 GMC Sierra with a blower resistor that had been on fire and melted the wiring. Loading…
What happens when you replace a blower motor resistor?
In this case, the heater and air conditioning system may still function normally pushing the cold or hot air out of the vent beside the speed. The resistor needs to be replaced with a new one in order to restore its function. Another common symptom of a faulty blower motor resistor is that the blower motor only works at slow-speed.
What’s the name of the motor that turns the heater?
When the heating or air conditioning in your car is turned on, the fan turns on and forces air out of the car’s vents. The motor that turns the blower is called the blower motor.
Where is the motor for the heater blower located?
The motor that turns the blower is called the blower motor. It is located in the dashboard, usually on the opposite side of the steering wheel or inside the engine compartment on the firewall. The blower speed can be adjusted in almost every modern car.
When do you need to replace the blower motor relay?
If the blower motor does not function, car fuses are blown, or relays are melting, you may have to replace the car blower motor relay. 1. Blower motor does not function 2. Blown fuses 3. Melted relay The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor.
Is the GMC Terrain AWD blower motor working?
2013 2.4L AWD owner here. This is the nicest vehicle I’ve ever owned. Recently the blower motor started acting up in the strangest way. Some days it doesn’t work at all. Some days it works just fine.
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.
Why does my Chevy Silverado blower motor not run?
If the blower motor runs when all of the terminals were jumped together, it means the circuit between the resistor connector and blower motor is fine as well as the blower’s motor relay, but the blower resistor is bad and needs to be replaced.
Why does my Silverado Sierra have no fan?
The failure mode on these is one or two of the resistors blow and you end up with just a few of the fan speeds or as previously mentioned the connector burns up and you have no fan speeds. Powered by phpBB © phpBB Group. phpBB Mobile / SEO by Artodia .
If the blower motor does not function, car fuses are blown, or relays are melting, you may have to replace the car blower motor relay. 1. Blower motor does not function 2. Blown fuses 3. Melted relay The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor.
Why is my GMC Sierra 2500 HD heater not working?
Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My Heater Working? What are common reasons my GMC Sierra 2500 HD has heater problems?
What happens when a blower motor resistor fails?
If you’ve replaced a blower motor resistor and that replacement has failed, it’s time to conduct an amperage test on the blower motor. If the amp draw exceeds manufacturer’s specifications, replace the blower motor. can also cause an overheating condition. In some cases, the heat is so high that it melts the connector.
For each higher speed, power flows through one less resistor. Some car makers run blower motor power through the fan speed switch first, then through the blower motor resistor and then to the blower motor and ground. Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch.
Why is my blower not working on my GMC Sierra?
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. It is a five terminal relay.
Where is the resistor on my GMC Sierra?
The resistor is located under the passenger side glove box. You just remove the black plastic molding below it and then pop out of the old one and plug in the new one. But be warned that after you replace it, it’ll probably work for a couple days, weeks, months possibly a year and then go out again. My 2005 GMC Sierra has this problem as well.
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.
In some cases, the heat is so high that it melts the connector. This is common on late model GM vehicles. If you discover a melted connector, do NOT attempt repair. Purchase an upgraded pigtail and splice it into the harness along with a new blower motor resistor.
How does a resistor work on a blower motor?
Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch. By it’s very nature, resistors resist the flow of electricity, much like a flow restrictor in a pipe.
Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch. By it’s very nature, resistors resist the flow of electricity, much like a flow restrictor in a pipe.