jellsworth19

Hello, I have a 2015 Z06 that's blowing warm air on the passenger side while the driver side blows cold. Could this be a faulty blend actuator? If so, does it require removing the dash to replace?

Any hep would be greatly appreciated!

BELVIN20

In the past Corvetts, when that issue has happened it has been a low refrigerant issue, how ever if you have temp setting for passenger side a blend door for the passenger side could be failed in the heat mode,

jellsworth19

Thanks for your response BELVIN20. So in your opinion, a malfunctioning blend door only effects "heat" mode?

tim32311

As stated above many Corvettes in the past (and other GM vehicles also) experienced same symptoms when the refrigerant was low OR when the blend door malfunctioned. I wrestled with the blend door on my C5 vette and when that didn't fix it recharged the a/c refrigerant and voila! Cold a/c. In hindsight it would have been cheaper and easier to just recharge refrigerant from the start.

Tim

jellsworth19

Ok thanks guys! I'll try recharging the a/c.

Anyone try this themselves or just take to dealer? The re-charge port is buried between the firewall, valve cover & dry sump!

Maxpowers

This is obvious but you don't have the thermo up high on the right with the duel zone climate control?

fsvoboda

Could be low refrigerant or blend door malfunction or control malfunction. I would suggest simply letting the dealer repair, particularly if you're still under warranty.

madrob2020

(16 Z). Just had this fixed 2 wks. ago at dealer. Mine was driver side (all vents) at random begin to blow warm to hot air while driving & the pax. side vents continuing to blow ice cold air. I swung into dealers one day while it was doing this, cause we all know the "can't duplicate" dodge. Service Manager jumped in driver seat, put his hand to those vents-then pax. side. Yep, he says, blend door problem. There are 2 blend doors (each side, I believe), one for A/C coil, one for heater coil. When the heater coil blend door sticks or moves to open while driving with A/C on you get either a "blend of cold/heat or all heat". They kept it for 4 hrs & all has been great since. Looked up several sites on web concerning "blend door malfunctions" before going to dealer to educate myself so I knew what I was talking about. This was not the one where the plastic cog's teeth break off & cause noise & malfunction. Should be an easy fix. If it was refrigerant you would get warm/hot air from both sides. As one poster said, make sure pax. side is synced & if not synced, make sure it's not set to a much higher temp than driver side-how embarrassing that would be at dealer! Good luck & come back with results from dealer.

jellsworth19

Thanks madrob2020! I will most definitely take it to the dealer and have them check those blend doors. You mentioned 4 hrs... did they have to pull the dash apart?

And no, the pass side is NOT set to a higher (warmer) temp. Thanks again!

madrob2020

I let them give me a ride home, so didn't watch & didn't ask either-sorry. Damn-just checked my service record from that visit & it says it was HVAC/Radio controls malfunction & was replaced. I would never have guessed that! But I guess that malfunction still caused the blend doors to not operate properly.

jellsworth19

Ok wow! I'll have them check the controls.