Heater control issue

[kd_unruh]

I have a 2001 Tahoe and lately I have had an intermittent problem with the heater control. Every once in a while I will run the heater, then when it's warm in the cabin, I try to lower the temp, but it still stays on high heat. Even turning it to full cold and turning on the A/C has no effect on it. The fan speed and whether I have it blowing on feet, through the dash or defrost makes no difference. Since this is intermittent, I'm assuming it something that's sticking, but I have no idea where to start looking. Can anyone provide some input on this? Thanks!

 

[treepete]

switches check out OK? sounds like the switch isnt working right once its warm in the cabin.

 

[dhenley126]

Heater control

Its the blend motor for hot/cold air. Had the same thing happen.

 

[wilb3]

Sounds pricey!

 

[dhenley126]

Heater control

If I remember right, around $40 - 50 from local auto parts store.

 

[wilb3]

Well that's not too bad. Its definitely well worth a try.

 

[jpmaniac87]

gotta get it from the stealership most likely. it's the hvac blend door actuator

 

[kd_unruh]

Thanks for the help. It's been performing fine the last couple of weeks. I'm going to try to find that actuator. Thanks again!!!