2004 chevy trailblazer
 

I have 2004 chevy trailblazer that the a/c compressor clutch will not engage now i checked all the fuses and relays they are all good still can't figure out why the compressor will not engage

check freon level might be low check the line see if you see oil anywhere on the line at the joints if no oil the high pressure or low pressure switch may be bad.