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Front ac on my 98 suburban not blowing

The front ac is not blowing air but the rear is only blowing hot air, the compressor engages but nothing is coming from the front vents.

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01 suburban blow hot air in front and cold in rear


There's a valve between the front and the back that is supposed to open automatically. I have the same problem on my 1994, but in reverse, I get AC in the front, but it just blows hot in the back. I was told that this valve might be stuck... but no one would tell me where it was or how to get to it and no mechanic wanted to fix it for me. Apparently, if you can find it, it's easy to get it unstuck. Good luck.

Apr 18, 2013 | 2001 Chevrolet Suburban

1 Answer

Ll2001 suburban, when the AC is on, the front AC blows hot, warmer than ambient temperature while the rear AC blows cold air as expected. The flapper door seems to be working and both air box filters are...


possible heater hot water control valve. if equipped would be found on one of the heater hoses under the hood. also try cafeully pinching the heater hoses to stop water flow.

Aug 04, 2011 | 1993 Chevrolet Suburban

1 Answer

My air conditioning began making a rythmic squeaking noise when the AC was on. It has now quit blowing out of the front vents. It works on the feet, defrost vents and in the rear air. What could this be??


  1. Air conditioner system is discharged. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Repair as necessary.
  2. Air conditioner compressor clutch not engaging. Check compressor clutch wiring, electrical connections and compressor clutch, and repair or replace as necessary.

May 10, 2011 | 2003 Chevrolet Suburban 1500

1 Answer

92 suburban ac light blinking tried to add freon but pegged the pressure gauge when hooked up to the low pressure port


My ac light is blinking, and the ac compressor clutchpulley is not engageing. Its also blowing hot air

Apr 13, 2011 | 1992 GMC Suburban

1 Answer

My 2002 Expedition air conditioner will sometimes blow hot air and others cold air


I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

May 07, 2010 | 1999 Ford Expedition

3 Answers

2001 Chevy Suburban rear a/c warm front ice cold


I believe there is a expansion valve located on the back part of the air conditioner on the back right side i believe that could be the problem. I think if I am understanding you correctly, your back air is not as cool as it should be or not cold at all. Might want to check this. If I am not understanding you correctly please let me know again what your problem is.

Aug 24, 2009 | 2003 Chevrolet Suburban 1500

4 Answers

03 suburban ac problem


Put a new belt on it and spray the condenser coil in front of the radiator with a hose when it gets up to temp or the sound starts and see if it stops. Thats what I did today. Flapping/clacking stops for about 10 minutes until thing get hot again.A/C blowing cold air the entire time.

Jun 24, 2009 | 2004 Chevrolet Suburban

2 Answers

Blowin hot air system pressure way to high


is the ac condensor clutch engauging

May 22, 2009 | 1994 GMC Suburban

2 Answers

Front heater fan control switch gets hot and melts. Why?


this is an easy one, the blower motor is drawing to much current, this happens as they wear out, replace the blower motor aNd all will be well in chevy land.

Feb 10, 2009 | 1997 Chevrolet Suburban

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