A/C Issues - Entire System Replaced

[Denali09Sierra]

Hey All, 

 

I'm having issues getting the A/C working correctly on my wifes truck. She has an extended cab 2011 Silverado 1500 LT, 5.3L with driver and passenger side controls. 

 

The long and short of it is I have replaced every component of the system except for the evaporator - which was flushed out and clear of any obstructions. The low side fluctuates between 50 to 80 PSI, with the high side ranging from 80 to 130 PSI. I also noticed the electric fans were not consistently on with the A/C - yet they do function. 

 

I'm beginning to think that maybe there is a common electrical issue that I am unaware of.... any advice/help would be appreciated. 

 

Thank you.... 

 

 

[Denali09Sierra]

Bump

[richard wysong]

High side pressures are low. Check the orifice tube for debris and correct size

[Denali09Sierra]

12 hours ago, richard wysong said:

High side pressures are low. Check the orifice tube for debris and correct size

And the low side is high.... which normally seems to be indicative of a faulty compressor - which was just replaced. 

 

Orifice tube is clean, and appears to be the correct size.