Questions & Answers for: no heat in gmc 1500

...GMC 1500 4X4- NO HEAT- NEW THERM / NO HEAT TO "IN" LINE TO C HEAT TO RADIATOR- FAN WORKING EVERYTHING LOOKS GOOD JUST NO HEAT GOING INTO CORE there is a vacuum line running to a vacuum switch on one ...

...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 can work. Help Try to ...

...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 system works from a ...

GMC Sierra 1500 4.8l 55k miles. Blower works in all heat settings, just no hot/warm air. Driver and passenger sides are the same. Feel little to no difference when moving the temp sliders from cold to

gmc 1500 with dual ac, driver side vents shift from ac to full heat while the passenger side says in ac mode bad blend door actuator maybe there is way to press the buttons on controller to make doors

2006 GMC sierra 1500 4x4 heat or a/c won't switch from dash vents. Stuck won't switch to defrost of floor. ideas?? how to's??? it is more then likely a vacum trouble

...GMC. The two trucks are very different, if it's a '94, them there are relays mounted on the passengers side firewall under a plastic shield, these will make clicking noises. If it's a 2000, the most ...

...gmc sierra blows heat out of the defroster but not the dash vents. The A/C works fine. The heat comes out of the windshield and window defrosters but not the main directable passenger vents. The cold ...

...gmc sierra 1500 blow hot air but the air is in the dash not coming out of the vents, why? Heat is in the dash board not coming out of the vents. Usually a sign of a faulty blend door. The blend doors ...

1999 GMC 1500 Series 4X4.Heat is not blowing on feet The heat comes out of defrost and body level, but will not come out on the feet. Usually a faulty blend door under the dash.