2001 chevy tahoe climate control continues to blow hot air in the front of vehicle not back even when the controls are turned off..had to remove the fuse from the fuse box to save the battery..blower doesn't turn off even when vehicle is turned off and keys removed
I had the same problem on my 2004 GMC Yukon XL.
Still under warranty the shop was able to reprogram the climate control system and tell what was wrong rather quickly with a OBD computer.
That’s when they found both of the climate control (driver and passenger) side actuators were bad and the control unit that tells the actuators where they should be was also bad.
The truck was in the shop with most all the dash, seats, consol, and steering wheel out for a week. The cost was over $1200.00.
That has seamed to fix the problem. Good Luck.
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www.tahoeforum.com > ... > Technical Discussions Dec 5, 2008 - 10 posts - 7 authors
2001 Tahoe, the front heater blows a little hot air when the car warms up and then blows cold air. The rear heat seems to work fine. I changed ...
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.
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.
give it a shot, best of luck
HVAC control head problem or it is the air Temp Control Valve problem. THe control head is the one with the buttons and knobs and the control vavle is located on the HVAC carrier assembly underneath dashboard (two of them one on left and one on right in center). This is a job for someone who has knowledge of HVAC and electrical on a GM vehicle.
Notorious for plugged heater cores. Also updated plastic restrictioncouplers 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.
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?