rjemison1109

2013 grandsport, tried to put on ac for the first time this year, dual zones are on “60” on both sides. Passenger side is blowing ice cold, driver side blowing hot as can be.

anyone have any ideas on an issue?

DEFCON5

I've had this issue on my last two Corvettes. On my C5, it was the passenger side blend door that necessitated my having to remove the dash and replace the actuator. On the C6 I recently bought it was just a matter of adding freon.

88redconvert

When my C5 did that it was low on freon. Not sure if the a/c is set up the same on a C6. Maybe someone else can chime in.

Boss 57

Quite interesting issue - I'm curious as to maybe the head unit has some effect, as I had it replaced in one C5 ((electronic problem) although in this case unit was not displaying anything).

rjemison1109

freon seems fine ( ran it for an hour with ice cold/hot half and half). Display on the unit has been fine with no issues.

Boss 57

Well that's interesting, with lack of freon you may not think would be the case! Now I wondering about this actuator, hmmm.

Carl Timonen

I would try to initialize the blend door actuators.

k1500coburn

any idea how to do that?

This is an OLD issue on here, but I can't find the original threads on it. I envision having to take the dashboard apart down to the firewall with intake manifold removal to get to the screws holding in the box with all the functions in it. Drain coolant. discharge AC. I'm hoping for a miracle cure on here from someone who's done it.

Carl Timonen

If you're asking how to initialize the blend door actuators, just disconnect the positive battery terminal for about an hour, then put in the run mode. You should hear the actuators reset.

k1500coburn

so I guess an engineering degree in thermodynamics did not prepare me for the easy path. All I did was charge the thing and now both sides are ice cold. I can only think that GM put in some sort of routine that when it gets low on freon, it does not set a code, but the driver's blend door goes hot. no idea how else the same evaporator can blow 2 different temperatures.

Boss 57

Thanks for posting that information, would be mighty relevant.

Yeah, that's a puzzler. Hmmm. Perhaps these actuators become reset somehow

Sunnyvale Dave

Did the OP get this problem resolved?

Donzo7

I had the same issue yesterday. My drivers side air got warm and passenger side was cool but not cold. Started it today both sides are hot. Son checked freon it's fine. So is it the compressor most likely? How much for part and labor ? Is it more on ZR1? Blower in the way? Thanks.