Question about 1998 Chevrolet Tahoe

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1998 chevy tahoe rear a/c blows hot while front a/c blows cold

Front a/c works fine. rear a/c blows hot air

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There is a rear condenser in the back on the right it's bad

Posted on Jul 26, 2012

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: 2001 tahoe front heater not working, rear heater blows warm air

I have the same problem with my 2001 Tahoe. The front blower is working, its blowing strong, but its cold air even with the temp setting as high as it can get. The rear blows hot air. The engine temp guage is at about 210ish which is close to being normal (220). I just replaced the thermostate a few months ago, I don't know if its bad again, or it I deluted the antifreeze too much and it frooze the heater core, or if the heater core just went bad. Any one know what the cause could be?

Posted on Jan 04, 2010

inspectmycar

Chris Biddle

  • 233 Answers

SOURCE: ac blowing hot air

the blend door actuator located on the air box (right hand side under dash) is prob. inop. worst case senerio the blend door its self is broken. I have replaced the actuator more than anything.

Posted on Sep 16, 2009

Steven Brock

  • 507 Answers

SOURCE: 2003 chevy tahoe no rear heat

I know the earlier tahoe's have two heater lines running from the engine compartment to the rear under the vechile. Those lines could be clogged or pinched shut. What you do is get two hose locking pliers. Go under your truck, they are two metal lines that turn into rubber and back into metal again farther down the line. First, checked for pinched lines. If none, find where the rubber hoses are, clamp them off, remove from metal lines and drain. Use garden hose to flush fresh water through. When water comes through at high pressure and pretty clear, it should be done. Reconnect hoses, top off radiator fluid and it should be fine.

Posted on Feb 21, 2009

gasitjr

  • 90 Answers

SOURCE: 2001 tahoe front heater not working, rear heater blows warm air

Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.

Posted on Jan 18, 2009

Anonymous

  • 6 Answers

SOURCE: Rear a/c not blowing cold, front works fine.

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

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I HAVE A 2001 CHEVY TAHOE FRONT AC BLOWS COLD REAR DOESNT


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One line should be cold and the other warm or hot.

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Chevy 2005 tahoe z71 blows cold air in back but hot air in front


Just got an answer from Chevy Dealer. When you replaced the battery it loses its memory as to where the door actuators were (the flaps that control the heat and A/C).

The fix:
Turn everything off and let the car sit overnight. The computer should reset itself during its learnings process.
In the morning turn on the ignition and let the car run for a few minutes before turning on the climate control.

If this doesn't work, plan on 1-1.5hours of labor for a technician to reset the actuators at the dealership.

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I have a 1998 tahoe my rear air blows cold but my front air does not any idea?


is the front blowing hot air out or no air moving or barely air moving and warm?

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Raer a/c works but front blows hot air on my 99 tahoe


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Jul 14, 2009 | 2004 Chevrolet Tahoe

1 Answer

2001 tahoe front heater not working, rear heater blows warm air


Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.

Jan 18, 2009 | 2001 Chevrolet Tahoe

6 Answers

2001 tahoe front heater not working, rear heater blows warm air


I have the same problem with my 2001 Tahoe. The front blower is working, its blowing strong, but its cold air even with the temp setting as high as it can get. The rear blows hot air. The engine temp guage is at about 210ish which is close to being normal (220). I just replaced the thermostate a few months ago, I don't know if its bad again, or it I deluted the antifreeze too much and it frooze the heater core, or if the heater core just went bad. Any one know what the cause could be?

Jan 05, 2009 | 1998 Chevrolet Tahoe

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2005 Chevy Tahoe


THE PROBLEM IS NOT A FUSE, IT IS THE REAR SEAT AIR TEMPERATURE CONTROL BLEND DOOR THAT IS CAUSING THE PROBLEM.

Nov 23, 2008 | 2004 Chevrolet Tahoe

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1998 tahoe ac


there should be some aluminum lines under the truck on the rear of body, feel these lines with the a/c on, if they are cold then there is something wrong with your rear blen door, blend door is the door controling the cold or hot desire position, sometimes it is controled by vacium and sometimes it is electrical, if lines are cold what most likelly they will be then have the rear belnd door actuator inspect.

Jun 18, 2008 | 1998 Chevrolet Tahoe

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