A/c not working

[fredhouse]

Hello every one,my name is Eric and this is my first post on the site and look forward to many more.

My a/c is not working,hot air blows out but compressor does not kick on.I have checked the fuses and i have tried to jump the compressor with a paper clip but that did not work either. I'm not sure where to look next,i have looked at many of the threads on the old site but can not find a schematic of the a/c system.Any help with this would be great thank you Eric.2003 trailblazer lt ext 5.3L.Also i have checked the pressure on the high and low side and they were equal at 98psi.

 

[The_Roadie]

Welcome! This is certainly where the active support community is.

Here's the schematic. Could be the relay or clutch or the high side sensor. A high end scan tool could talk to the PCM and see if it's commanding the clutch to go on or not. Or probe the relay.

View attachment 20427

 

[fredhouse]

roadie thank you for your help,this will make it much easier.

 

[fredhouse]

compressor is bad,i have a warranty so it should be covered.Thank you for your help i now know where all the parts of the a/c are.