Hi all ! My blower motor seems to have a loose wire problem and or ground issue. Every time i drive over a bump ( live in ohio haha) the fan stops blowing hot air in the cabin, but comes back on. Is it there a certain location where the wires come loose known for? Or should I just replace the resistor and fan motor? If the car is parked, they both run fine at any setting, So I dont think its the resistor or motor but open to suggestions. It is a 2004 SS .Thank your help!

 

If it's the same as my 2001 3.4 I would check the ground which on mine I had to remove the battery to get to. There are also a couple of grounds left of the stereo that you need to remove the lower panels under the steering column. The resistor is a pain to replace, if I had to do another one I would probably remove the passenger seat. Also, the bolts are tough to get a socket on because there is very little room. When the resistor goes bad you usually lose lower fan speeds but it works on max. I'm thinking something is loose or the motor itself is bad since bumps set it off. To check the connections I would remove the dash and and unbolt the climate control panel to look at those and connection coming from the ignition switch.

 

Same thing happened on my 04 Impala

Pulled the kick panel off pass side wiggled the connectors and then cleaned then with a small flat screwdriver and so far no more issues

Not sure if monte same as Impala but if it ends up being fan easy to change and reletively inexpensive

 

i replace the resistor under the glove box in my 2001. since i had it apart, i also change the fan motor because it was nasty......my resistor was so old, it had missing circuit in it...i have pics