2006 GMC Sierra "heat" Questions

when the gauges in my truck fluctuate and the heat doesn't come on the way it should,does that mean the thermostat needs to be replaced? I made sure the heater core wasn't shot,there is antifreeze in ...

very little heat from heater truck can be running for long time very little heat comes out You HVAC unit is not getting the heat from your engine coolant. A valve is stuck or there is blockage in the ...

GMC SIERRA 1991 HEAT NOT WORKING MY BOYFRIEND JUST PUT IN A NEW HEAD UNIT AND NOW THE HEAT STOPPED WORKING. SO I AM WOUNDERING IFTHER IS ANY RELATION BETWEEN THE HEAD UNIT AND THE HEAT. AND IF NOT ...

window defrost I only get heat out of the center vents no matter where my heat selector switch is. I need to get heat out of my defrost, how can I get heat out of more than just my center vents. Dan ...

no heat just replaced heat core 6 months ago. then a week ago added stop leak to radiator and followed directions and now no heat Some of your hoses may be clogged up. I suggest having your radiator ...

air conditioning and heating controls I have a 2002 GMC Sierra. When I try to turn on the heat and air controls, nothing happens. It doesn't matter whether the fan is on low or high, heat or ...

2004 gmc 1500 heat is only blowing on passenger side. driver side is blowing cold air. sounds like you have dual zone climate control in your truck. Most likely the actuator that controls the temp ...

no heat or defrost blowes fine but cold Things to check... Check radiator fluid level. Open when COLD. System under pressure when hot. Top up if low. You need to check the radiator not just the ...

I have a 2005 gmc sierra with heated leather. my heated seats quit working. when i turn them on they light up like normal but they shut off in about 30 seconds. checked all fuses and they are fine. ...

2002 duramax will heat up underload but not at idle any ideas why why won't my duramax heat up at an idle No diesel I have ever owned will heat up to operating temp while idling. I have had semi's and