Questions & Answers for: GMC Suburban freon coming vents

Not cooling What type of freon is in a 1993 suburban my sisters is kicking in and out and not cooling I know it more and likely need freon. your system needs to be cleaned out and converted to r134 or

...operates on the floor vents. Also the rear AC is not providing cool air u have a door actuator not working under dash,,,no cold air in rear is either low of freon or needs a new expansion valve in ...

coming out. I added a can of freon and now it needs more. I can hear a hissing sound near the joint where two nuts meet on left side of engine compartment so it appears to be a leak. Can I unscrew the

...circuit. You mean a wiring diagram? Blower problem or Compressor doesn't come on? Is it full of freon? Does the compressor come on if you jump the low pressure

coming out of defroster vents and want it to come out of dash vents Check for vacuum leaks on the engine. The air doors are vacuum controlled, and when they have no vacuum they only blow on the window

...freon leak coming thru the seam of the compressor end cap the freon input side, I am sure it is a bad o-ring. I never disassembled a a/c compressor the compressor works fine just has this leak is it ...

...your dryer (right hand side of the engine compartent) there is an a/c pressure switch and once the freon in the system has reached a certain pressure it will complete that loop and let the

...rear vents blow hot air Could be a blockage in the lines to the rear unit.Might be low on freon too.  Or a blend door problem.Can you check under the floor and see if one of the lines is cold

will no freon prevent me from adding freon if the compressor wont engage without it relays are good blower good blows hot air but push button switch on control panel for a/c wont light up Sort of.If ...

THE FREON PRESSURE IS 40 WHEN THE COMPRESSOR IS NOT RUNNING, BUT WHEN I JUMP THE COMPRESSOR TO MAKE IT RUN THE PRESSURE DROPS TO ABOUT 10 THE COMPRESSOR ONLY RUNS IF I GO HOT TO THE COMPRESSOR LEADS..