2005 Chevrolet Tahoe "heat hot start drive" Questions

...heat it up, the temp gauge goes up like usual, but will not blow hot air until I start driving down the road? I even let it warm up for about 45min. and still would blow cold air until I started ...

...to heat up the U-joint with blow torch. Get them hot enough to where you see and hear the seal pop. Just had it done on an 89 chevy van. Also check out your lock-up tourqe convertor on your

...hot air unless I'm driving. Heat works fine until I come to a stoplight, then it starts blowing cool air after sitting there for a minute or so. Any suggestions This is pretty common with a leaking ...

heat up which causes air to expand, and when they cool the air will shrink also check valve stems make sure they arnt leaking spray some windex on them see if u see air bubbles coming out or not. if u

...hot like during the summer? Worst case senero, (and i mean worst case) could have blown head gasget, at a spot where it runs into a combustion chamber and going out the exhaust, very small and most ...

...temp when started in park with no heat in interior, but when I begin to drive it starts to get hot, with still no heat. Any help? Possibly a bad head gasket. Are bubbles coming up in the

...heat. The heater blows hot air until the thermometer almost goes in the red then it starts blowing cool air. I checked the top radiator hose and it's really hot and the bottom is cool. I've changed ...

no heat again? Are you saying the air does not blow when the car is parked, or it switches from hot to cold ? If it switches from hot to cold, it could be low on coolant, or a blend door may be faulty

...hot The heat blows cold ....then for some reason when I start driving it will heat up but....it at times would blow cold and then hot again...however, at times it still blows hot. I can' figure out ...

...heat. My heater blows hot air until the temperature gets really hot then it starts blowing cool air. The top radiator hose gets really hot,but the bottom hose doesn't get that hot. I've changed the ...