A/C blows HOT from dash, but ice cold in rear
#1
A/C blows HOT from dash, but ice cold in rear
2003 Suburban LT - AC blows hot...like full blast heater on....from the dash vents regardless of temp setting, but normal from the rear passenger vents.
It has dual side controls that are controlled with the computer via selecting a temperature.
What could this be?
It has dual side controls that are controlled with the computer via selecting a temperature.
What could this be?
#2
Administrator
Welcome to the the forum...
Most likely the blend door is not operating correctly, you could try the calibration function as a place to start and its free to try... if it doesn't work then you will likely have to replace the actuator
to try the calibration
Remove the HVAC fuse for 10 seconds, re-install fuse
Turn key to start no crank and wait at least 40 seconds for the doors to calibrate, do not make any adjustments to the AC during this time...
After the 40 seconds are done start the vehicle and see if it is operating correctly...
I think this is for the 2006 and up but its worth a try...
Most likely the blend door is not operating correctly, you could try the calibration function as a place to start and its free to try... if it doesn't work then you will likely have to replace the actuator
to try the calibration
Remove the HVAC fuse for 10 seconds, re-install fuse
Turn key to start no crank and wait at least 40 seconds for the doors to calibrate, do not make any adjustments to the AC during this time...
After the 40 seconds are done start the vehicle and see if it is operating correctly...
I think this is for the 2006 and up but its worth a try...
Thread
Thread Starter
Forum
Replies
Last Post
ntheath
Tahoe & Suburban
18
August 28th, 2020 3:36 PM
alxwilhelmi@aol.com
General Tech
1
January 2nd, 2014 11:26 PM
jennkent5454
Silverado, Sierra & Fullsize Pick-ups
3
January 12th, 2010 5:41 AM