Question about Chevrolet Suburban 1500

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96 suburban air conditioning blows out cool in front hot air back

Only blows cool air in front but hot air in middle and back vents

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Am investigating same problem. Download the free technical manual and you can find a diagram for the air mix door. If this doesn't shut you will be getting lots of heat through despite the cooling of the Aircon. I don't know how to get at it or fix it but it describes how to run diagnostics - you don't need specialist tools for this. Also a blocked pollen filter probably won't help.

Posted on Oct 19, 2009

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  • Chevrolet Master
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Freon is most likely low

Posted on Jul 01, 2009

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Just installed new compressor and freon why does it still not get cold enough front vents

Posted on Aug 11, 2009

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1 Answer

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Not likely, but Is Hot water flowing to heater coil in back? How hot is "very hot" Is it a refrigerant line? If a refrigirant line, Very Hot means it is hot gas from the compressor that "should be going to the condenser coil usually in front of the radiator. It's almost impossible for that Hot refrigerant gas to go to the cooling coil in the back unless you had some repairs done and they weren't certified. My guess is the radiator hot water is not being controlled properly, due to bad valve or control system components.

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96 Grand Am 2.4l A/C not equipped - Lots of cool air through vent. Almost no air to defrost. Blows hard to floor (great temp mix). Every vent setting? Mech just replaced heater core? What? Fine before


Looks like your mechanic messed up. If he has any integrity then he should take care of you. If not and you want to try and tackle it yourself then you have to ask yourself this: do I want to pull the dash out? Because that is what that will entail. Sounds like he may have messed up the ducting somehow. Unless the blend doors and directional doors are electric actuator operated in which case those actuators need to be replaced

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2001 Suburban: I have a 2001 chevy suburban and the air condition...


if its the computer climate controlled series then it might be the the vents. what happenes some times is the vent wont switch over from hot to cold or vise-versa. i had the same problem but reversed, no heat in front and it worked up to the last time i had switched it from hot to cold.
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1 Answer

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1 Answer

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ase mechanic:
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