Hi I'm new here, please bare with me... I have a 2003 grand Cherokee Laredo and my Ac/ Heater fan has quit working on the high position? Is it the blower motor, resistor or the control panel switch? Please help

 

It could be the resistor harness plug. Sometimes they overheat and melt. That's usually caused by the resistor or blower motor drawing too many amps. This is on the bottom of the blower motor housing under the glove box. No need to remove the glove box on your model.

 

Thank you so much I will check that out tomorrow.

 

I changed the resistor in mine a few weeks ago, I looked on the forums and then googled it and found there are a couple of different types, I removed mine to see the shape , about 5 minutes work, matched it on a pic on ebay, ordered it, it turned up the next day !, fitted and all working fine. Best of luck

 

Well I replaced the resistor and that is not the problem... any other suggestions would be greatly appreciated.
Thank you in advance

 

Sorry no other thoughts here, hopefully someone else may be able to come up with a suggestion, best of luck