Ac issues

[Texasbirdslive]

Seems like ive changed everything out still incorrect cooling. Last year replaced compressor, condenser, dryer, pressure switch, orifice. Last week rear expansion valve both rear actuators. Gauges look good. Im pretty knowledgeable with ac just cant figure this one out. Im a diy guy so any help appreciated.

 

[OR VietVet]

It would help a lot, to have all truck information and the original problem you are experiencing and did any of the problem change after the "parts cannon" was fired at your truck.

 

[Texasbirdslive]

It would help a lot, to have all truck information and the original problem you are experiencing and did any of the problem change after the "parts cannon" was fired at your truck.

It would help a lot, to have all truck information and the original problem you are experiencing and did any of the problem change after the "parts cannon" was fired at your truck.

Any AC guys out there?

 

[j91z28d1]

Any AC guys out there?

that's why he's asking? ac guy needs details.

even basic stuff like which ac option do you have.

 

[swathdiver]

What are you driving? What kind of AC do you have? Have you checked for any internal BCM codes? What exactly is or isn't happening?

 

[Joseph Garcia]

Seems like ive changed everything out still incorrect cooling. Last year replaced compressor, condenser, dryer, pressure switch, orifice. Last week rear expansion valve both rear actuators. Gauges look good. Im pretty knowledgeable with ac just cant figure this one out. Im a diy guy so any help appreciated.

If you want good answers, please provide the information that we are asking for. The experts are here, and they do not hold back on providing information, which is a two-way street.

 

[Texasbirdslive]

If you want good answers, please provide the information that we are asking for. The experts are here, and they do not hold back on providing information, which is a two-way street.

2013 tahoe ls 5.3 with rear ac
No codes. Ac correctly charged
Ac air temp 70 degress.

 

[j91z28d1]

auto or manual ac, if auto do you have a scanner able to access blend doors?

is the rear vent temp and front temp the same?


what are the pressure you have that are fine. if you have 40 or less on the low side and 70 deg vent temp, you have blend door issue.

 

[Texasbirdslive]

Thanks ill check and report back. I calibrated the blend doors with no errors. I also believe blend door issue. How do i check ac temp at the source?

 

[j91z28d1]

evap temp sensor testing

 

[Texasbirdslive]

Yup i feel pretty ignorant at this point. Scanner and all i missed checking the evap temp. I thought since no error codes from actuators i was good. Also calibrated them. Evap box at 28-30F. Anyone know which blend door to check first?

 

[Texasbirdslive]

auto or manual ac, if auto do you have a scanner able to access blend doors?

is the rear vent temp and front temp the same?


what are the pressure you have that are fine. if you have 40 or less on the low side and 70 deg vent temp, you have blend door issue.

Yup i feel pretty ignorant at this point. Scanner and all i missed checking the evap temp. I thought since no error codes from actuators i was good. Also calibrated them. Evap box at 28-30F. Anyone know which blend door to check first?