Denali09Sierra

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.

Bump

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....

Hey Everyone, Haven't been on here since I sold my 09 Denali, please forgive me as I have gone back to a Dodge Ram - strictly for the Cummins. ? Love it btw. Anyways, my wife recently got an 2011 Silverado 1500. It's developed a serious front end clunk/pop while turning left. She just brought this to my attention, and I went out to take it for a test ride. Sure enough, lots of clunks, look down - and the 4x4 is on! Yikes. My brother in law is a GM honk and confirmed these trucks don't have a light that pops up on the dash - kinda dumb, huh? Anyways, a quick Google search showed there was a big problem with ISS with GM trucks for a long stretch of time. Was this still an issue with 2011 pick-ups? Wondering what I should be looking for when I check for damaged/worn parts this Sunday (my day "off")?. I'm not familiar with IFS systems as I've always had a solid front axle in my trucks. TIA.