my 2003 cadillac deville heat blower motor works when it wants to or if you slam...

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pearsonclan5

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...the passenger door. why? and it also comes on if i hit a good bump. i can mess aroung with the controls for it and it wont come on that way, but as soon as you slam the passenger dorr it comes right on. what do you think the problem is?
 
Sounds like the wires on the blower motor is not all the way plugged
in.
raise the hood up on the car, The heater fan will be on the fire wall
on the passenger side and should have 3 or 4 wires going to it.
Just push a few wires and see if that does it , If not then take it to a garage and ask them to check the wires out that goes to the heater motor ( same as blower motor). I do not think it would cost anything for them to check it. Good Luck.
 
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