Question about 1999 Chevrolet Suburban
Posted by Anonymous on
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Posted on Jan 02, 2017
you may not have enough refrigerant. a low charge can cause the rear in this dual system to not work for beans. charge with a can of uv and find the leak. fix the leak. evac the system and recharge. i think you take 4 lbs, but check the accumulator sticker. you may want to just change the accum at the same time.
Posted on Jun 15, 2009
probably the same problem as the '99. you probably lost too much coolant. charge with dye and check for leaks, (these things lose refrigerant normally, so you may not have a bonafide leak but check anyway) change the accumulator as a matter of course. evac the system and make sure you lose no vac over the course of 5 to 10 min. recharge the system for the proper weight (which is on the accum sticker) if you need detailed instructions let me know.
Posted on Jun 16, 2009
The car uses the same freon in the front as it does in the rear. If the rear a/c is working, you either have a plugged evaporator in the front unit, or perhaps a bad heater switch. Try switching the heater to hot and see if it blows even warmer air from the front vents. If so, the heater switch is working and then it sounds like a plugged evaporator or maybe a plugged orifice tube. That is a good place to start looking. Hope this helps.
Posted on Jul 07, 2009
If rear a/c blower motor working but just not cold, it's going to be a clog expansion valve for the back unit, if not blowing air bad blower motor.
Posted on Jun 28, 2010
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