Have it checked for DTC'S - diagnostic trouble codes .
Electronic Automatic Temperature Control (EATC) Module DTC Chart NOTE: Some PCM DTCs may inhibit air conditioning (A/C) operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.
DTC
Description
Action to Take
B1251
A/C In-Vehicle Temperature Sensor Open Circuit
Go To Pinpoint Test A .
B1253
A/C In-Vehicle Temperature Sensor Circuit Short to Ground
Go To Pinpoint Test A .
B1255
A/C Ambient Temperature Sensor Open Circuit
Go To Pinpoint Test B .
B1257
A/C Ambient Temperature Sensor Circuit Short to Ground
Go To Pinpoint Test B .
B2427
RH A/C Solar Radiation Sensor Circuit Short to Ground
Go To Pinpoint Test C .
B2426
RH A/C Solar Radiation Sensor Open Circuit
Go To Pinpoint Test C .
B2795
LH A/C Solar Radiation Sensor Circuit Short to Ground
Go To Pinpoint Test C .
B2796
LH A/C Solar Radiation Sensor Open Circuit
Go To Pinpoint Test C .
B2014
Evaporator Temperature Sensor Circuit Open
Go To Pinpoint Test D .
B1947
Evaporator Temperature Sensor Circuit Short to Ground
Go To Pinpoint Test D .
B295A
LH Blend Door Potentiometer Feedback Circuit Open
Go To Pinpoint Test F .
B295B
LH Blend Door Potentiometer Feedback Short to Ground
Go To Pinpoint Test F .
B226C
LH Blend Door Motor Stalled
Go To Pinpoint Test F .
B295C
RH Blend Door Potentiometer Feedback Circuit Open
Go To Pinpoint Test F .
B295D
RH Blend Door Potentiometer Feedback Short to Ground
Go To Pinpoint Test F .
B226D
RH Blend Door Motor Stalled
Go To Pinpoint Test F .
B295E
Mode Door Potentiometer Feedback Circuit Open
Go To Pinpoint Test F .
B295F
Mode Door Potentiometer Feedback Short to Ground
Go To Pinpoint Test F .
B226E
Mode Door Motor Stalled
Go To Pinpoint Test F .
Need to use a professional scan tool to check these codes !
SOURCE: 1998 buick park avenue drivers side blows cold, passenger side hot
sounds like the drivers temp door actuator is not working should be located on the drivers side of the air box down by the gas pedal or center dash area.
SOURCE: 2004 chevrolet suburban AC blows hot/cold at same time
You need to replace the drivers side temp actuator that is located on the left side of the HVAC box. It is retained by 3 screws and is fairly easy to replace.
SOURCE: Blowing cold air ,no heat
Not exactly certain, but sounds like you have a broken "blend door" or acuator malfunction
SOURCE: Air/C, blows hot air on drivers and cold air on passenger side?
The vent actuator my need to be reset, this can be done by removing the HVAC fuse from the fuse panel for 5 min or disconnecting the battery. If the vent actuator does not correct it self, then it's most like going to have to be replace due to internal parts have broke in the actuator.
Thank you for using fixya and it's common for the vent actuators to go bad after a few years, the internal parts are made of plastic and get brittle after time.
SOURCE: no heat of drivers side blows cold air while
Replace the door blend actuator behind glove box, approx $150 for part, Everyone I know with dual control on the silverado's have this problem.
NO HEAT ON FLOOR VENTS
---------
As
per your problem mentioned. There are few solved help links to
troubleshoot these problems. Go through the list and Click the link below:----
http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html
------------
------------
http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
-----------
http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html
--------------
-----------
http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html
--------------
http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html
----------
-------------
http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html
-----------
http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html
----------
http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html
----------
These
will help.
Thanks.
As
per your problem mentioned. There are few solved help links to
troubleshoot these problems. Go through the list and Click the link below:----
------------
------------
http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
-----------
http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html
--------------
-----------
http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html
--------------
These will help.
Thanks.
To troubleshoot this types of problem,click the link below
:----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the
issue.
------
Engine Overheats and heater
blowing cold?
http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
---------
Heat blows cold on drivers
side and hot on passenger side?
http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html
-----------
No heat on car?
http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html
------------
Heater blows intermittently and temp
gauge goes erratic?
http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html------------Heater blows cold?
http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
---------Car heater blowing warm, but not
hot air?
http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html--------
Heater/AC blower motor not working?
http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html
------------
A/C, heater, defroster fan, not
working?
http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html
Heater problem?
http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html---------
This will help.Thanks.
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Usually answered in minutes!
I already replaced the blend air door
left side Temp. blend door actuator
Temperature Blend Door Actuators
The dual-zone EATC system uses 2 temperature blend door actuators to control 2 separate temperature blend doors. The temperature blend doors independently vary the LH side and RH side temperature settings, as desired. The temperature blend door actuators each contain a reversible electric motor and a potentiometer. The potentiometer circuit consists of a 5-volt reference signal connected to one end of a variable resistor, and a signal ground connected to the other. A signal return circuit is connected to a contact wiper, which is driven along the variable resistor by the actuator shaft. The signal returned to the EATC module from the contact wiper indicates the position of the temperature blend door. The EATC module drives the actuator motor in whichever direction is necessary to make the actuator contact wiper voltage agree with the expected EATC module contact wiper voltage value.
Which one did you replace , right or left ?
NOTE: It is not required to install the new LH temperature blend door linkage parts included in the LH temperature blend door actuator service part kit if only the temperature blend door actuator requires replacement and the linkage parts are not broken or binding.
LH temperature blend door actuator and linkage
Remove the 2 lower steering column opening cover bolts.
Detach the lower steering column opening cover.
Disconnect the in-vehicle temperature sensor aspirator hose and electrical connector.
Position the instrument panel wire harness away from the LH temperature blend door actuator.
Remove the 3 LH temperature blend door actuator screws.
Disconnect the LH temperature blend door actuator electrical connector.
Remove the LH temperature blend door actuator.
Manually operate, and inspect the LH temperature blend door linkage for incorrect placement, binding or damage.
LH temperature blend door linkage only
Detach the 2 retaining tabs and remove the LH temperature blend door linkage.
Ok thanks I'll try that
I replaced the left one and the right side has heat I took the door off and can see the temperature lever moving but the temperature isn't changing on the driver side
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