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Blower worked intermittently on 5 hit a bump on/off replaced resistor and pig tail but blower still doesn't work?? what do I need to check now?? grounding??

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If blower motor resistor was replaced, make sure all connections are tight and well plugged in. I would supply direct powerr and ground to the blower motor to see if it works. It still sounds like a resistor issue

Posted on Apr 12, 2015


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My GMC Sierra 1500 2004 blower motor only works on high speed

Very common issue with those! Most likely will need a blower motor resistor at the least and possible resistor pig tail. They get hot and melt the ends causing a bad connection. If not going to dealer be sure to take bad resistor with you because there are two different styles that look similar until you go to bolt it back up. If replacing the pig tail replace one wire at a time so you do not cross wire it.

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Most likely the blower motor resistor,,, always check fuse first (KISS) the blower motor resistor is mounted on the heater box (inside or out) not sure on the s-10 most likely the pig tail that plugs into the resistor is defective by melting at the connection to the resistor so after finding and checking the resistor you may need to order a repair pigtail and replace that too. Note always check the blower motor to see if it moves freely,,, a stiff or hard to turn blower motor is a good reason the resistor would fail.

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My 2008 Envoy Denali's heater blower is intermittent. Sometimes it works and sometimes it doesn't. Usually if it does not work when I start the vehicle, I can restart the car a couple of times and the...

Since you are mechanically inclined, now is the opportunity for your electrical skills.
Disconnect the plug from the back of the dashboard switch, and using a VOM (Volt-Ohm-Meter) check the plug for current when you turn on the ignition key.
The hot lead should immediately work.
If the electric meter shows the same intermittent reading you are describing, it is time to fine the relay that controls the current to that switch.
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you have a bad blower motor resistor it is located under the dash on the passenger side may have to remove a shield to see it has to 8mm bolts holding it in and a wire connector to it also may have a melted connector and need the connector pig tail replaced.

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How do you change the blower motor on a 2004 dodge caravan


1.First dissable the air bag system

2. open the glove compartment, squeeze the side in to release the glove box stops and lower glove box.

3.You will see the Blower Motor Resistor directly behind the glove box.

4.There will be two pig tails (one vehicle harness, one resistor), remove pig tails, remove two screws to free resistor.

5.Replace resistor, reverse removal procedure.


Take care..

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The problem is not with the switch, it's the blower motor resistor. The resistor is usually located in duct work near the blower motor. It will have 4or 5 wires going to it and is held in place with a couple screws. These things generate heat, so they put them in duct work so the fan blows air across them to keep them cool. Sometimes the plug gets hot and melts, you should be able to buy the resitor and the plug with wires (pig tail) from an auto parts store or a dealer. The resistors are usually about $50 the pig tail is about $30.

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Technical Service Bulletin TBS
Your Blow Motor Resistor Is the problem
replace the blower motor resistor & the resistor module connector (Pig tail).
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Should take about 30minute to replace not to hard.

Let me Know

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