2003 Tahoe Air Conditioning

[deeanneharris]

My air conditioning has been working fine. Yesterday when I was driving I had both sides in the front set on 60 degrees. The driver side started blowing hot air, but the passenger side kept blowing cold air. After it sat over night, it has worked fine today with both sides blowing out cold air when it is set at 60 degrees. Any ideas on what is wrong?

Thanks in advance.

[MT-2500]

Originally Posted by deeanneharris

My air conditioning has been working fine. Yesterday when I was driving I had both sides in the front set on 60 degrees. The driver side started blowing hot air, but the passenger side kept blowing cold air. After it sat over night, it has worked fine today with both sides blowing out cold air when it is set at 60 degrees. Any ideas on what is wrong?

Thanks in advance.

Check system for a full charge.
Post back low and high side readings at idle and at 2K rpm.
MT

[bmoore37]

Originally Posted by deeanneharris

My air conditioning has been working fine. Yesterday when I was driving I had both sides in the front set on 60 degrees. The driver side started blowing hot air, but the passenger side kept blowing cold air. After it sat over night, it has worked fine today with both sides blowing out cold air when it is set at 60 degrees. Any ideas on what is wrong?

Thanks in advance.

Try replacing the actuator on the firewall pass side. AC delco part 15-72506
$35.00 good luck

[paulws]

My mother in law has the same problem with her tahoe. Did you get the problem fixed and give me some info on how?

[procaddytech]

Yes. Driver side temperature actuator. Especially if it is much hotter than the passenger side when it fails. Right on the botom of the heater case under the right kick panel. Watch for the center to move while you change the left side temp.
If it is only slightly warmer than the right side, A/C charge must be checked for sure.