Question about 2006 Chevrolet Colorado

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Where is the temperature control module on my truck?

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Usually they are screwed into either the intake manifold ot the radiator tank... be careful as to not crack the sensor end tip connector while working on it... some require a special deep socket made to remove/install sensor as to not damage it.

Posted on May 06, 2010

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Posted on Jan 02, 2017

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2006 Silverado, with a/c running and cold on both sides for 2 hours or so then the drivers side gos hot passengers side cold at the same time.


Manual or automatic climate control ?
Have you had the HVAC control panel checked for DTC'S - diagnostic trouble codes ?

Air Temperature Sensors
The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:
• Ambient Air Temperature Sensor
• Inside Air Temperature Sensor Assembly
• Upper Left Air Temperature Sensor
• Upper Right Air Temperature Sensor
• Lower Left Air Temperature Sensor
• Lower Right Air Temperature Sensor
A signal and a low-reference circuit enables the sensor to operate. As the air temperature surrounding the sensor increases, the sensor resistance decreases. The sensor signal voltage decreases as the resistance decreases. The sensor operates within a temperature range between -40°C (-40°F) to 101°C (215°F). The sensor signal varies between 0-5 volts.
The input of the duct air temperature sensors are different from the ambient and inside sensors. The HVAC control module converts the signal to a range between 0-255 counts. As the air temperature increases the count value will decrease.

• DTC B0174 Output Air Temperature Sensor (Upper Left) Circuit Range/Performance
• DTC B0179 Output Air Temperature Sensor 2 (Lower Left) Circuit Range/Performance
• B0414 is for the left air temperature actuator.
B0408 is for the left air temperature actuator.
DTC B0989 Output Air Temperature Lower Sensors Correlation
The HVAC control module monitors the upper left and upper right duct temperature sensors when the mode switch is in the VENT or BI-LEVEL positions. The HVAC control module monitors the lower left and lower right duct temperature sensors when the mode switch is in the DEFOG, FLOOR or FRONT DEFROST positions. The duct sensors are used to measure the temperature of the air exiting the ducts to help maintain a consistent cabin air temperature. These duct sensor inputs provide the HVAC control module a way to determine if the engine needs to be started to maintain a specific air temperature. If an upper duct sensor circuit failure is detected the HVAC module will not request an engine start to help cool the cabin. A lower duct sensor circuit failure will not prevent the engine from starting.
DTC B0990 Output Air Temperature Upper Sensors Correlation
Your best bet , take it to a qualified repair shop .

May 27, 2017 | Cars & Trucks

1 Answer

When heat is on it blow hot ondrivers side and cold on ppassenger side.


Do you hear any clicking sounds coming from behind the instrument panel ? Electrically controlled actuators move temp . blend doors and they wear out .Plastic gears etc..
Electronic Automatic Temperature Control System
The electronic automatic temperature control (EATC) system operation is determined by the settings on the EATC module. The EATC system automatically maintains a selected temperature for vehicle interior comfort, including capabilities to maintain separate temperature settings for the driver and front passenger. The electronic temperature control capabilities are achieved by splitting the air distribution system internally and utilizing 2 individually operated temperature blend doors. The EATC system is composed of the EATC module, automatic temperature control (ATC) solenoid and manifold, blower motor speed control, 4 vacuum control motors, 2 temperature blend door actuators, in-car temperature sensor, ambient air temperature sensor and solar amplifier (sunload sensor) to control the various functions. Do you know about DTC'S - diagnostic trouble codes ?

The electronic automatic temperature control (EATC) system must be diagnosed by first retrieving any DTCs, if present.
  • An on-demand (hard fault) DTC indicates that the fault is currently present. An on-demand DTC suggests a wiring fault, disconnected connector or component failure.
  • A continuous (intermittent) DTC alone (corresponding on-demand DTC is not present) indicates that the fault is an intermittent condition and may not be currently present. A continuous only DTC suggests a poor wiring connection, loose pin or terminal or intermittent component failure.
On-demand (hard fault) or continuous (intermittent fault) DTCs can be retrieved using a diagnostic tool. If using a diagnostic tool, refer to the diagnostic tool operating manual.
On-demand DTCs can also be retrieved by carrying out the Electronic Automatic Temperature Control Module On-Demand Self Test. To retrieve and/or clear continuous DTCs carry out the Electronic Automatic Temperature Control Module - Retrieve Continuous DTCs procedure. Always carry out the Electronic Automatic Temperature Control Module On-Demand Self Test before retrieving continuous DTCs.
If no DTCs are present, GO to Symptom Chart for the appropriate diagnostic action.

DTC EATC DTC Displayed Notes Description Action to Take B2266 2266 N/A LH Blend Door Failure or Short Go To Pinpoint Test A . B2267 2267 EATC Only RH Blend Door Failure or Short Go To Pinpoint Test A .
  • The dual temperature control is inoperative/does not operate correctly - Dual Zone EATC
  • Temperature blend door/actuator broken/binding
  • EATC module
  • CHECK the temperature blend doors/actuators for a binding or broken condition. If no condition is found, INSTALL a new EATC module. REFER to Section 412-01 . TEST the system for normal

Feb 05, 2017 | 2006 Mercury Mountaineer

1 Answer

I have a 2011 Chevy Traverse that blows hot air.


Depending if it's manual temp control or auto.............

Here's manual

1 - Air Temperature Sensor - Upper Left
2 - Air Temperature Actuator - Left
3 - Air Temperature Sensor - Lower Right
4 - Air Temperature Actuator - Right
5 - Mode Actuator
6 - Air Temperature Sensor - Upper Right
7 - Blower Motor
8 - Blower Motor Control Module
9 - Evaporator Temperature Sensor
10 - Air Temperature Sensor - Lower Left




26128900-uuob5xk5qpmufdktz2iyu4qm-2-0.gif

Here's auto

1 - Mode Actuator
2 - Recirculation Actuator
3 - Blower Motor
4 - Blower Motor Control Module
5 - Air Temperature Actuator
6 - Evaporator Temperature Sensor



26128900-uuob5xk5qpmufdktz2iyu4qm-2-1.gif

Mar 13, 2016 | 2011 Chevrolet Traverse

1 Answer

Where is a air temperature control sensor in a 2004 GMC Canyon located at


There is none on your vehicle , temperature control is by a cable .There is a evaporator temperature sensor , this is used to keep the evaporator from freezing up !
Air Temperature Control The air temperature control regulates the HVAC system air temperature in any mode. An air temperature control cable mechanically links the air temperature control to the air temperature door.
Evaporator Temperature Sensor The evaporator temperature sensor will not allow an A/C request to the body control module (BCM) at temperatures less than 0°C (32°F).

Sep 14, 2015 | GMC Cars & Trucks

3 Answers

Air blowing cool on passenger side warm on driver side how to fix this


sounds like you have a temp door motor problem on the drivers side. the motors seize/stick and have to be replaced.

Aug 09, 2015 | 2005 Buick LeSabre

2 Answers

What is an ICP - RCC - Speedometer fuse for on a 1997 ford taurus dohc ICP - RCC?


Hey Brian ,
ICP - Integrated control panel
RCC - Remote Climate Control Module
Integrated Control Panel-Electronic Automatic Temperature Control
Control Assembly The Taurus, Sable vehicles group together the following systems into a single integrated control panel:
  • AM/FM stereo radio
  • clock
  • rear window defroster switch
  • electronic automatic temperature control (EATC)
  • full-logic cassette tape player
  • compact disc player control (optional)
The remote climate control module is mounted to the A/C evaporator housing behind the integrated control panel. The integrated control panel is connected to the remote climate control module with a dedicated two-wire communication link. The integrated control panel EATC features:
  • a vacuum fluorescent display (VFD) for displaying set temperature, ambient temperature, function and diagnostic trouble codes (DTCs).
  • electro-luminescent backlighting for all buttons and graphics.
  • function override buttons.
  • temperature control and blower speed rocker switches.

Jun 08, 2015 | 1997 Ford Taurus

2 Answers

What causes a/c to blows cold on driver's side and hot on passenger side ?


There is a little motor on the heater box under the dash that needs to be replaced. It's called a blend door actuator...

Mar 16, 2015 | 2004 Cadillac DeVille DHS

1 Answer

The heater in my 04 Yukon Denali goes back and forth from hot and cold air


Your temperature control module is shorting out causing the variations. Or the temperature door module is bad. The easiest to change out is probably the temperature control module, it is the unit you can see in the dash that permits you to change the temperature.

Nov 13, 2013 | Cars & Trucks

1 Answer

Need to wireing diagram for iat sensor


Vehicles: all computer-controlled internal compustions engines equipped with an IAT (Intake Air Temperature) sensor

Intake Air Temperature (IAT) Sensor

Operation - IAT

This sensor is a resistor based sensor which detects the intake air temperature. According to the intake air temperature reading the ECM/PCM will control the necessary amount of fuel injection.

ECM = Engine Control Module (aka "the car's computer")
PCM = Powertrain Control Module (aka "the car's computer")

Dec 04, 2011 | Cars & Trucks

1 Answer

04 Tahoe AC blows hot air on drivers side but resets if restarted


A educated guess I would have to say there is a problem with HVAC control module ! electronics you know ! But that's not the way to do things ! There could be codes stored in the module. The Chevy dealer my have a reflash bulletin for this problem . Then can reflash , reprogram the control module ! The first place to start is checking for codes in the HVAC module.
The HVAC control module is a class 2 device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. The battery positive voltage circuit provides power that the control module uses for keep alive memory (KAM). If the battery positive voltage circuit loses power, all HVAC DTCs and settings will be erased from KAM. The body control module (BCM), which is the vehicle mode master, provides a device on signal.
Air Temperature Sensors The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:
?€¢
Ambient Air Temperature Sensor

?€¢
Inside Air Temperature Sensor Assembly

?€¢
Inside Air Temperature Sensor Assembly-Auxiliary

?€¢
Upper Left Air Temperature Sensor

?€¢
Upper Right Air Temperature Sensor

?€¢
Lower Left Air Temperature Sensor

?€¢
Lower Right Air Temperature Sensor

?€¢
Upper Air Temperature Sensor-Auxiliary

?€¢
Lower Air Temperature Sensor-Auxiliary
A signal and low reference circuit enables the sensor to operate. As the air temperature surrounding the sensor increases, the sensor resistance decreases. The sensor signal voltage decreases as the resistance decreases. The sensor operates within a temperature range between -40?° to +101?°C (-40?° to +215?°F). The sensor signal varies between 0-5 volts.
The input of the duct air temperature sensors are different from the ambient and inside air temperature sensors. The HVAC control module converts the signal to a range between 0-255 counts. As the air temperature increases the count value will decrease.
If the HVAC control module or auxiliary HVAC control module detects a malfunctioning sensor, then the control module software will use a defaulted air temperature value. The default value for the ambient and inside air temperature sensors will be displayed on the scan tool. The default value for the duct air temperature sensors will not be displayed on the scan tool. The scan tool parameter for the duct air temperature sensors are the actual state of the signal circuit. The default action ensures that the HVAC system can adjust the inside air temperature near the desired temperature until the condition is corrected.
The ambient air temperature sensor mounts underhood and can be affected by city traffic, by idling, and by restarting a hot engine. Therefore, the HVAC control module filters the value of the ambient air temperature sensor for temperature display. The ambient air temperature value is updated under the following conditions: Or you can just buy a new control module an hope that it fixes it. $89.00 at www.partsgeek.com

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Sep 18, 2009 | 2005 Chevrolet Silverado

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