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the blower resistor controls the fan speeds
The blower motor resistor module is ruined and need replacement. It can be found from below and behind the glove box. Tt may be hard to see, follow the wires to connection that is mounted to the blower unit by two small hex-head screws. I removed the glove box so I could access it easier than trying to go from the bottom in a confined position.
2004 Chevy express van, heater has no high speed, at one time the blower stayed on even when the ignoton was turned off therefor draining the battery,
No. Only when there is also movement. The basic formula for work is: work = force x distance If a certain force is applied along a certain distance, then work is done.
If you have a 2 stage furnace (hi fire & lo fire) then the blower will run on lo speed in lo fire & hi speed in hi fire and in AC mode. If it`s a single stage furnace lo speed for heat and hi speed for cooling.
Just had the same problem. First my blower motor would onlywork on "high", and then it started to change speeds and shut off by itself. Replace the resistor mounted in front of the blower motor.It costs about 40.00 at a dealer.
Your blower switch sensor is out. Replace it!Then all the speeds will work
either the blower control switch or the blower motoer needs replacing
Probably the blower motor resistor, check blower motor at the same time
You most likely will have a bad blower resister........
truck blower only work on high
the blower resistor controls the fan speeds
from what i have read it is the blower motor resistor it goes bad and only lets the fan run on high google blower motor resistor and read on
A blower motor that only works on high is normally caused by a defective Blower Motor Resistor Pack. DRL, do not have a clue.
blower motor resistor needs to be replaced
it's a problem with the blower motor resistor,
faulty blower motor resistor