AC/HEATER question...

[memphisboi55]

why is it when i turn it off..... it still blows out?
any1 else have this problem?

 

[YukonMud]

How strong?
I don't think I have that problem but I do have other issues with my ac/heater.
Randomly the ac/heater control just shuts off with out warning and for a random period of time. Anyone experience this before?

 

[clean95]

How strong?
I don't think I have that problem but I do have other issues with my ac/heater.
Randomly the ac/heater control just shuts off with out warning and for a random period of time. Anyone experience this before?

does it happen when ur at a low idle or at a complete stop?

 

[YukonMud]

My issue happens at both and at freeway speeds.

 

[clean95]

My issue happens at both and at freeway speeds.

u my friend have a vacuum leak... im fighting hte same problem im goin to change out the vacuum canister this weekend and some more hoses hopen that will fix its 99% positive thats what it is... ive checked everyother problem

 

[GMCYukalade]

That... or.. Your heater Switch is failing.. mine completly melted on the inside...

 

[YukonMud]

u my friend have a vacuum leak... im fighting hte same problem im goin to change out the vacuum canister this weekend and some more hoses hopen that will fix its 99% positive thats what it is... ive checked everyother problem

Let me know if that fixes your issue...

 

[YukonMud]

That... or.. Your heater Switch is failing.. mine completly melted on the inside...

Where is the switch located? Is it the main control unit its self? If I pull it out of the dash, will I be able to see the issue or will I have to take the unit apart?

 

[Russ A]

The Switch is in the heater/ac control assembly in the dash. It's easy to replace, and only costs about $20.00 form a chevy dealer. Part # 16192099.

I've replaced mine twice now. most recently a couple of weeks ago,
and it's already going out.

At first the fan starts shutting off, without apparent reason, then
eventually it won't work at all. The feel of well defined switch
positions will be gone. An examination of the bad switch will
reveal evidence of excessive heat between switch contacts.

.......So what can be done to prevent the switch from melting/
going out...?

Russ A.

 

[memphisboi55]

I guess I am not specific enough. my switch is just fine, im saying when I turn my ac/heat off I cab still feel it blowing out...... why is this?

 

[burbanman03]

ok guys

i just whent through this it is the blower motor resistor pack oreillys has them for like $15 it is located behind the glove box on top of the heater box kinda a pain to replace but mine works great now no problem good luck

 

[GMCYukalade]

The Switch is in the heater/ac control assembly in the dash. It's easy to replace, and only costs about $20.00 form a chevy dealer. Part # 16192099.

I've replaced mine twice now. most recently a couple of weeks ago,
and it's already going out.

At first the fan starts shutting off, without apparent reason, then
eventually it won't work at all. The feel of well defined switch
positions will be gone. An examination of the bad switch will
reveal evidence of excessive heat between switch contacts.

.......So what can be done to prevent the switch from melting/
going out...?

Russ A.

Bigger better wiring... this small wiring can't handle the current flow