Possible blower motor resistor or motor problem??

[98tsiawd]

Hey guys,
My truck doesn’t get driven very often and about a month ago I jumped in and took it for a drive, (the truck had been sitting for about 2 weeks) and the blower motor wouldn’t work on any speeds. I drove the truck for about 10 mins and the motor started working again on all speeds. I thought maybe it was b/c the truck had been sitting for a while and it was really hot out to why it wasn’t working, I didn’t give it any attention afterwards as it started working again. I was driving my truck the other day and took a sharp corner with a little bit of speed and when the body of the truck started to roll to the one side the blower motor quit, when I exited the corner and the truck body roll straightened out the blower motor started working again. Do you guys think this is a resistor problem or possible a motor problem?
Thanks for the help

 

[jpimp]

Funny when you turn you lose it. I wonder if there are wires rubbing or lose?
I would inspect wires very well.

I think when resistor pack goes out you get only high fan speed.

Might be the blower motor, maybe these can be tested on the bench with 12V? not 100% sure on this though.

IF wiring looks OK I would suspect the motor.

Hope this helps, Good Luck

 

[The_Roadie]

I bet you're going to find charred parts on the connection harness.

 

[98tsiawd]

I finnaly got around to taking the resistor out and looking at the wires. The resistor has a plug with 3 wires going into it, the wires look new no charred parts everything looks good. Is there a way to test the wires, resistor and blower motor to see if any one of them are faulty? I have the new resistor and pig tail to install but I would hate to replace perfectly good parts. My truck sat again for about 5 days, got in it and no blower motor on any speeds, then drove it for a bit then it started working again, maybe the blower motor?
Thanks for the help

 

[CaptainXL]

My truck sat again for about 5 days, got in it and no blower motor on any speeds, then drove it for a bit then it started working again, maybe the blower motor?
Thanks for the help

The cheapest way to go is to replace the 7 pin harness connector, followed by the resistor and then if that doesn't work the motor. But I would check the motor harness for voltage before replacing it. But don't delay even for a few days between replacement steps. A bad motor can draw too many amps and blow both a new harness connector and resistor pack.

http://www.amazon.com/dp/B0040CVQO8/?tag=gmtnation-20

or

http://www.amazon.com/dp/B003YLKLJM/?tag=gmtnation-20