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Jun 25, 2009 - Hot air from vents-driver side and cool air from vents on passenger side. ... The driver's side vents were blowing out hot air, and everything else wasblowing cold. ... you'll literally have to restart your tahoe/yukon at every traffic light to keep cold air coming ... I was also getting air only out of the defrost vents.
? 3:14
https://www.youtube.com/watch?v=5lnd8UNcx6M
Aug 3, 2013 - Uploaded by South FL Mud Club
Suddenly hot air started blowing out the air vents only on the drivers... ... is a very helpful video ,I wondering if this part number apply for my 04 chevy tahoe? .... I have cold air out of thepassenger side, but warmer air out of the driver's side. .... 2003 Tahoe No Rear Heat Fix, Suburban, Yukon XL Repair!
Driver/passenger air vents blow hot then cold when using A/C. Back to cold when you restart the vehicle. Upvote (35) ... 2003 Chevrolet Tahoe ... I have a 02 Tahoe ,and the heat system is working only on the ceiling side of the car when turn.
TXV -
Thermal expansion valve stuck closed . Having a professional A/C repair shop do the testing an fixing .. If you never went to training classes or work on A/C systems , leave it to the professionals .
plurbaby236, The venting system for the front of your vehicle is controlled by a vaccum line coming from the engine the rear is electric. You may have a broken vacuum line in the engine compartment. When this happens the defrosters are a default setting. Check for a small vacuum line going through the firewall, usually near the middle and follow it. You may find that it is broken. A quick repair is to take a small piece of rubber hose that fits snuggly on the plastic vacuum hose. Good luck with this.
That sounds to me like your vent "tubing" is disconnected somewhere along the line. I am not sure exactly how it is set up in the vehicle you are driving, but I am certain fixing it will involve taking apart most all of your interior then putting it back together after a 10 minute fix.
the most probabale cause of this would be a disfunctional hear core if you replace your heater your heater will more than likley work the the way it's supposed to
What are the readings on your A/C service gauges, hi and low sides? If you don't have service gauges, inexpensive ones can be purchased at stores like: Harbor Freight, Walmart, Pep Boys, etc. The gauge readings are the first step to a correct diagnosis.
Your system may be low on refrigerant. If you also have a rear heating unit, the air mixing door or water valve may not be shutting off. Your expansion valve may be bad in the rear unit.
If you can access your rear a/c, check to see if the inlet hose is hot or cold. If it is cold, you are low on refrigerant. If it is hot and the tube coming out of the expansion valve/orifice is cold, this is the way it is supposed to be. If the tube on the outlet of the evaporator is not cold, then you are low on refrigerant or the expansion valve/orifice may be bad.
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