01 tahoe front heat sucks

[NCTyphoonKid]

The heat in my 01 lt sucks. It blows good heat sometimes but here lately it's been luke warm to cold and it sucks the rear heat works great. Does this sound like the blend door if so should can I get the blend door to stay on the hot side to just get it through the winter?

 

[OR VietVet]

Does sound like an actuator problem since the back heat is great and that would rule out thermostat type problems. Do a search on the site and there will be lots of threads about this.

 

[NCTyphoonKid]

Yeah I've been searching but it sounds like the blend door is stuck or something are they easy to try and recalibrate? It'd be great if I could get it to stay on the hot side for now since money is a little bit tight since Christmas and having to get a trans put in my other tahoe and I still have to get tires for one. Lol always something here lately.

 

[NCTyphoonKid]

So I messed with the actuator tonight and I can turn the shaft easily. So I don't think the door is stuck I can hear it moving when I turn it. How do I reset the actuator?

 

[RachelJWalker]

I looked on the sister site of this one there is a post of someone having the Same issue he had a GM tech tell him to disconnect the battery leads and touch them together for 10 seconds he said remember once hooked up the truck might run rough for a bit until computers in truck reboot. Another post said his heater core was plugged flushed system now works better than ever. Hope this helps

 

[NCTyphoonKid]

I looked on the sister site of this one there is a post of someone having the Same issue he had a GM tech tell him to disconnect the battery leads and touch them together for 10 seconds he said remember once hooked up the truck might run rough for a bit until computers in truck reboot. Another post said his heater core was plugged flushed system now works better than ever. Hope this helps

touch the battery leads together? Never heard of that I've heard of disconnecting them but never touching them together. I about froze in the thing tonight it was so cold

 

[NCTyphoonKid]

I tried resetting the actuator from the info I found on the forums and still nothing, both heater hoses going to the heater core were hot, rear heat is still hot too. I Took The Actuator off lastnight and didn't see anything wrong with it inside. Are there 1 or 2 actuators on these? I took the one off on the passenger side. I wish I could manually just get it to stay on the hot side for the winter and fix it this spring

 

[NCTyphoonKid]

Just noticed that where the rear heater box is located in the back it sounds like it's making a farting noise and it does over and over the heat situation in this tahoe is starting to make me really aggrevated.

 

[RachelJWalker]

Wish I could help you more but I did have a friend who changed one of his actuators.
http://www.tahoeyukonforum.com/forum/picture.php?albumid=3303&pictureid=24253

 

[NCTyphoonKid]

The diagram helps I don't understand now that I've reset them it'll put out a puff of hot air in the front and go back to cold I don't get it