The blower is under the dash on passenger side. Remove lower panels (7mm), then blower cover. If your blower only works on 3,4 or 5 and does not blow on 1 or 2, you don't need a blower. You need a blower motor resistor. It is also under dash on pass side. Remove lower panel. Resistor is right up against the fire wall. Unplug it and remove 2 (5.5mm or 7/32) screws. They are kind of a pain to reach but I've done it many times.
how do i change my blower motor on my 2007 malibu
if it is the same number on it!!
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The blower motor is under the glove compartment
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Under the passenger side dash. It's awkward to get to, but it's there.
Under the hood on the evaporator case.
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should be in underhood fuse box!