A/C blower problem (2016 1500 Express w/5.7)

[TX-Ghost]

Ok, so my a/c works but if I turn it up to the two highest fan speed settings it shuts off. I’ve replaced the blower motor and still didn’t fix the issue. Has anyone else had this problem or know what causes/solutions may be?

 

[18CrewDually]

Fan speed resistor

 

[TX-Ghost]

Is there somewhere I can order just the resistor or will I have to replace the entire blower motor again?

 

[Mpgrimm2]

Is there somewhere I can order just the resistor or will I have to replace the entire blower motor again?

7spd Blower Resistor: 68048901AA
(same as Denso PN 499300-2121)

Be aware that many cheap aftermarket/knock off resistors (ie dorman) have issues ... better of with a clean used OEM Mopar/Denso part IMO.

 

[TX-Ghost]

thanks bro!