Auto climate control problems 2011 explorer

SOURCE: Fan speed switch only works on #5

Call your local GMC Dealer and see if they have the climate control panel in stock. What happens is the circuit board on the back of the panel shorts out. The panel comes as an assembly and is very easy to replace. Don't go with a wrecking yard piece. I made that mistake once and it didn't work either. I got one from the Chevy dealer and it worked perfectly.

SOURCE: a/c heater climat control switch

Check the relais module located inside under the rh side of the heather box you can see the connector most of them need to be replaced as they burn out you may need to replace the blower motor as well,high amp draw caused by faulty bearings will overload the blower motor controller

SOURCE: 1999 BMW 328ic Climate Control Problem

There is a fix for this on the web. You have to remove the control unit and replace a resistor or capacitor. I did mine and it worked like a charm. Takes a coupla hours. the resistor is less than a dollar.

SOURCE: 1997 Bonneville SSE, when the heater is turned on, only cold air

you may have a failed blend air door motor/actuator. this part will regulate the amount of air from the heater core depending on the temp setting on your electronic climate control unit. if it has failed, it will be stuck at the temp that it was last set at when it quit working. it is also possible the heater core may be plugged up, but using the gm recommended dexcool coolant and flushing it out every 5 years, it should not be plugged up. you can pull the 2 heater hoses off the heater core on the passenger side of the engine compartment firewall and see if the heater core is the problem. caution-do not use a high pressure air hose to blow through the heater core as this could damage it and cause a leak!

SOURCE: i have a climate control problem on 2004 gmc

The likely problem is the blower motor resistor pack is defective. It is located behind an access panel below the glovebox. Go to www.trailvoy.com and do a search on "blower motor resistor replacement"