96 tahoe blowing hot in floor with unit off

[Ldillio]

I have a 96 tahoe 2 door 5.7 4x4 which blows warm air in the floor board with the climate control set to off. It's like a dragon blowing on my feet. I've searched multiple forums with no solution found. I've run across a hot foot fix for s10s but nothing for my tahoe. Anyone have any ideas?

 

[Doubeleive]

when you start the truck try putting it on recirculation, if that doesn't work then you may have a bad actuator

 

[east302]

Do the dash and defrost settings work correctly?


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[Squirrelsmith]

I have noticed that my floor vents always seem to be blowing though i can controll the temperature

 

[nikinizor]

Not blowing crazy hot but warm for sure in mine....ac blows ice cold in backseat but front it is only cool due to the "mystery heat" its a 98 tahoe...I have been trying to figure this out too...

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[fastpat]

It sounds like a vacuum hose leak, I think most of the HVAC doors are vacuum actuated. We should all probably replace the vacuum hoses as a matter of course, on 20+ year old trucks.

 

[RSW1955]

It sounds like a vacuum hose leak, I think most of the HVAC doors are vacuum actuated. We should all probably replace the vacuum hoses as a matter of course, on 20+ year old trucks.

I have a 96 tahoe 2 door 5.7 4x4 which blows warm air in the floor board with the climate control set to off. It's like a dragon blowing on my feet. I've searched multiple forums with no solution found. I've run across a hot foot fix for s10s but nothing for my tahoe. Anyone have any ide

 

[RSW1955]

My guess one of your actuators has gone bad. They are not operated by cables or vacuum anymore but rather by electric
actuator. They are buried in the dash in various places depending on year and model. When I replaced them in my 04 Avalanche
the dealer quoted me an exorbitant price due to it being buried in the dash. I did it myself and saved a ton of money. If I recall a
96 is pretty easy to get to. Don't be afraid to use an aftermarket replacement, no need to spend extra for OEM. If you have access
to a Tech 2 scanner you can confirm it is bad. Look up on Youtube I'm sure somebody has posted a how too on it.

 

[Ldillio]

when you start the truck try putting it on recirculation, if that doesn't work then you may have a bad actuator

I leave recirculate on in the truck but it makes no difference if I cycle it on and off. It has all new blend doors, actuators, evaporator, heater core, blower motor, ac compressor, condenser, and ac lines installed. All modes work on the climate control, but didn't before and had to replace the unit. I had a 95 tahoe previously, and never figured out the issue. When driving with the ac on, it doesn't really cool down because the warm air is coming in. But it's ice cold when not moving.

 

[Ldillio]

It sounds like a vacuum hose leak, I think most of the HVAC doors are vacuum actuated. We should all probably replace the vacuum hoses as a matter of course, on 20+ year old trucks.

Replaced the motor when I purchased the vehicle and replaced all hoses with the engine change.