2007 Hummer H3 Heater Not Working. I had the same problem and sloved it with the help of google images, hummer blower motor resistor. What have you tried so far?
If so, feel the heater hoses going into your firewall to see if they are getting hot. Have you checked to make sure the thermostat is working? When trying temp dial, only the left actuator moves and it goes the full 90.
It Comes Loose And The Blower Will Work At Times.
Web hummer h3 a/c & heater blower resistor replacement. Web here are the most common symptoms that your hummer h3 is overheating. I had the same problem and sloved it with the help of google images, hummer blower motor resistor.
But If Its Not That I Think It Would Be The Control Board Itself 2 People Found This Helpful.
Check to make sure coolant temperature is going up to normal operating temp. Are you fixing your h3 yourself? Web first i would check to see if the radiator has enough fluid in it.
When The Coolant Level Is Low, There Is Not Enough Fluid To Absorb And Transfer Heat Away From The Engine.
It would not work on the first level. If there is any damage on that your controls would not work. Everything seems working fine, just there's no heat coming out.
Have You Checked To Make Sure The Thermostat Is Working?
Low coolant level one of the primary reasons for engine overheating in h3 is a low level of coolant or antifreeze in the cooling system. I have checked all the fuses. Check the owners manual of your h3 or the fuse box cover to find the exact location of the fuse for the blower motor.
In Case Of A Faulty Fuse, The Circuit Is Interrupted And The Motor Can Not Work.
Blown fuse the ac blower motor in hummer h3 needs electricity to work. If it is, check to see if coolant is actually circulating through the heater core. My heater is currently not working, but sometimes it comes on ok.