2005 GMC Sierra 1500 Hybrid "heater working" Questions

...normal no heat,blower is fine,all vents work and engine temp.is normal.no water leaking from heater core.windows don`t fog up. the valve that allows the hot water into the heater core is not ...

I replaced heater core in 1999 gmc sierra 1500 5.3 liter. I have no heat coming from defrost vents. Heater and ac work thru front vents.....Is there a reset sequence to get defrost to work properly no

The heater control in my 1994 GMC ierra 1500 4X4 truck just flashes arrows all the way across the heat setting and will not heat the truck now. Unfortunately the air conditioner won't go off so the ...

...heater not anymore.... please help... and also the temperature gauge not working, it's only pointing down and i already replaced the thermostat and temperature sensor, but the problem still ...

working again after a few minutes for a while but has quit completely. Main fuse in fuse box is good, changed heater/ac digital control but still doesn't work, digital heater/ac control switch doesn't

...the cold air starts again until I reach 1600rpm. Engine temperature gauge appears to be working normally and does not fluctuate when the heater temp fluctuates. check your coolant level on the ...

2000 gmc sierra 5.3l heater does not get hot antifreeze is full thermostat looks ok replaced anyway. what else? After replacing the thermostat I pulled the heater hoses off and blew air through the ...

Driver's side seat heater turns off after 30 to 45 seconds. When it goes off it also suts off passenger side. Passenger side works fine alone. Th heater relay is probably bad for the drivers side. ...

heater fan motor quit working already checked all fuses and relays check the fan switch in the dash and the fan motor connector for burning, if u find burned connectors replace them and the heater ...

...heater in the side mirror has worked in the past. I just noticed today that it wasn't working any more. It could have stopped a while ago but wouldn't have been noticed because there was no ice ...