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Chevy Suburban and Tahoe AC and Heater Problems



  • whiteelephant said: I'm very frustrated, and by Texas Lemon Laws these people have 3 attempts to fix the same problem. This is now their 3rd attempt.
    Make sure you document your three attempts to get the vehicle fixed. Keep all your service repair orders...and make notations about what they said concerning GMs comments that "this is a common problem but we don't know how to fix it". Make note of the the names of the dealer/GM people involved. To tell you that this is a common problem and they can't fix it is absurd. I would start working the dealer right now for a swap into a brand new '08. Let the dealer worry about the fix. If they won't do that then you should would start the Lemon Law proceedings immediately.
  • Hi, I have a 05 Suburban LT and just recently the blower motor for the front heater keeps running after the ignition is off. I opened the hood and pulled the fuse which temporarily fixed the problem, but now every second or third time I run the heater it happens again. I don't understand how it is getting direct power after the ignition is off and the keys are in my pocket.
    Anyone with a suggestion...please reply.
    Thanks from ice cold Ontario Canada.
  • As I was registering for this forum to comment, my dealer called and told me that I definitly had a short in the resistor control module causing the "mind of it's own" . They replaced it and fixed a leak in my front axe. Both under warrantee, thank God I bought the extended warrantee at the time of purchase last Feb. Good luck with yours.
  • I have the same problem with my 2001 Tahoe as well, thanks for the information. Did you install the flapper valve yourself and if you did how much work was involved?
  • 1999 Chevrolet C-1500 Suburban ... Can anyone tell me wher the Cabin Air Filters are located ? Thank You
  • My '04 z71 Tahoe's air conditioning periodically shuts itself off. The a/c will be nice and cold; without warning, very warm, humid air starts coming through the vents. I've had it into the dealer many times, but of course, it never happens for them. What could the problem be?
  • I have a 95 suburban. All the settings on the heating control work accept for the defroster. I can turn the dial to that setting but nothing happens, and in Michigan, that is not a good thing. Any ideas as to what is wrong and how to fix it?
  • In my 1500LT the fully automatic air con switches from blowing cold to hot or hot to cold only when the temperature selection is turned up above 90 degrees (or to 89 degrees or lower). On fully automatic the system will keep blowing hot (90 degrees or above indicated) or cold (89 degrees or below) AND NOT STOP.....

    Can anyone suggest where I start trying to cure this.

    I was thinking either of the aspirator (cabin temperature sensor in the roof lining) or the thermistor sensor in the footwell) - but which should I try first.

    As a related question can anyone suggest a decent scanner to connect to the vehicles electronic systems - and would they show the sensor readings?

    Any help greatfully received as I am over in England and there is just 1 authorised dealer for these vehicles.

    cheers and ta-ta from Julian
  • I have a 2003 Suburban I purchased about a year ago. About 3 weeks ago my battery went dead, I found out at that time that the heater fan is stuck on even when the car is turned off and the keys are out the fan still blows on low. I now have to remove the negative cable to the battery every night to avoid waking up to a dead battery. Has anyone else experienced this problem? If yes, how did you resolve the issue? What part caused the problem?
  • I had the same problem with my 03 Tahoe Z71. I had to replace the blower module, the blower circuit had failed.
    Parts: $117.48
  • denkatdenkat Posts: 2
    Thanks whorider for the response, it was indeed the blower module, $133.10 for the part $98 for the labor. That was a bummer, I'm just glad it's fixed. Thanks again.
  • The background of the problem is that I had absolutely NO control of my rear climate control. The blower motor always stayed on. even ran the battery dead. I replaced the ballast resistor and the fan ceased to run 24/7. I then had no control of which vent the air was coming out. I replaced the rear temperature sensor (little speaker looking device), and now I can control the transfer between the floor vents and the celing vents.

    Now the problem is I cannot get ANY heat. Is there something I'm missing?
  • I have a 04' AC works fine on drivers and pass' side drivers side blows cold no matter where the temp control is set. I can change it from floor to dash to defrost but it is always cold air. the passengers side get nice and toasty. Does this sound like an actuator?
  • okctahoeokctahoe Posts: 4
    First my speedometer stuck and went out in 2005. About the same time my stereo stopped working and also my a/c would blow out the defrost when it was positioned on face.

    I took it to the dealer and they replaced the dash panel where the speed controls are but the other two issues had sub-sided at the time. When they messed up again and I took it back...again they were unable to find anything.

    Now that the car is out of warranty the control is completly stuck on matter what you do that is the only place it will blow out. My husband got a geniune AC Delco replacement, brand new and installed it and it is still not working....Anyone know what to do? I am about fed up with GM!
  • They found a bad ground between the sensor in ceiling and climate control. They fixed the ground and it works. I could bet you have the same problem.

    Good luck
  • okctahoeokctahoe Posts: 4
    My husband replaced the control panel with a brand new ac delco part and it still won't blow anywhere but out the defrost and on your feet.

    I complained to GM twice about this when it was still under warranty but it started working again before they had the chance to check it. It was always sproadic until now it has been stuck like this for over a month. And of course out of warranty. Anyone have any suggestions.

    I already had my instrument panel replaced and my stereo sproaically goes off and on as well. I think the entire dash has issues in the GM SUV's personally from eveyrthing I have read on here. PLEASE HELP!
  • Somehow something got stuck in the fan motor inside the dash. How do I access the fan?
  • rockman59rockman59 Posts: 250
    okctahoe said: I already had my instrument panel replaced and my stereo sproaically goes off and on as well
    I assume the instrument panel was replaced under warranty therefore you have proof that the stereo problem could be related to the replacement, likewise the AC problem which the dealer failed to repair when the vehicle was under warranty. I would go back to your dealer and demand that they fix the stereo and AC as a warranty item.
  • jjejje Posts: 1
    I have a 2002 Chevy Tahoe. I have noticed that some of the back lights on my dash board switches have went out, but everything still works. ex.. defroster button. Recently when I try turning on the AC it will blink a couple of times then turn back off, most of the time it is when I idle. Sometimes once I get going or at times even as soon as I crank the truck it will turn on itself and work fine. When it is on it blows cold and works fine. Could this be electrical or the AC itself??
  • 96gmcburb96gmcburb Posts: 2
    Hello, Nice Place ya got going here!

    I just bought a 1996 Suburban 4x4 5.7L

    The front AC works, but the blower will not work on the "HIGH" setting If i toggle the switch back & forth i can hear a clicking under the passenger dash area when its clicked into high.

    the rear AC does NOT work, however when i use the switch i can hear the same clicking noise thru all speeds ( Lo - High) when i toggle the switch.

    So, I have a Several questions:

    (1) Is This usually a blower motor issue--- or a switch issue ( Both front and Back)

    (2) From the clicking sound, is there a blower motor in the back on the passenger side as well?

    (3) Are these Jobs easy to access and fix from inside the cabin?

    Thanks for your time!
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