Question about 2002 Buick Park Avenue

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The hvac control panel lites are not working how do i chang them

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U have to get new or used control head

Posted on Jun 21, 2009

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SOURCE: HVAC duct doesn't change when control is changed.

It is in the blend motor under the dash, this is water cycles it between locations. You will have to get it from dealer. It is bolted on under dash on either the passenger side or driver side of center console dealer can tell you exactly where it is. They are not usually that much.

Posted on Sep 09, 2009

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It has duel climate controls. With both set to 60, driver's side blows hot while passenger's side blows cool. What does it sound like


our honda crv did this , there was a problem with the heater core being partially pluged...there ended up being a recall on heater core

Apr 30, 2016 | 2006 Chevrolet Trailblazer

1 Answer

My heater is stuck on the windshield and floor what actuator needs to be changed


Air Distribution
The HVAC control module controls the distribution of air by the use of a defrost actuator and a mode actuator. The modes that may be selected are:
?€¢
Defrost


?€¢
Defog


?€¢
Panel


?€¢
Bi-Level


?€¢
Floor

The mode and defrost actuators are connected to the mode and defrost doors by a cam type linkage system. Depending on the position of the door, air is directed through the HVAC module and distributed through various ducts leading to the outlets in the dash. If the HVAC control module detects a fault with the mode or defrost doors the HVAC control module will try to drive the actuator for a predetermined amount of time, to defrost, which is the defaulted position for the mode and defrost door actuators. When the mode switch is placed in the defrost or defog positions the A/C is commanded on and the recirculation door is moved to the outside air position to help reduce window fogging. A/C is available in all modes and recirculation is only available in the panel and bi-level modes.
Circuit Description The following DTCs are for the HVAC door actuators: ?€¢
B0248 is for the defrost actuator.
?€¢
B0263 is for the mode actuator.
?€¢
B0408 is for the left air temperature actuator.
?€¢
B0418 is for the right air temperature actuator.
The HVAC control module controls the HVAC door actuators to regulate the airflow through the HVAC system. Each actuator consists of a stepper motor, a logic circuit, and a potentiometer. The potentiometer inside the door actuator allows the module to monitor the current position of the actuator drive shaft. The logic circuit inside the actuators receives control signals from the HVAC control module and controls the internal stepper motor. When a door positional change is required, the HVAC control module calculates a commanded door position. The module compares the commanded door position to the actual door position and determines the needed direction of motor rotation. The module applies a signal voltage to the door control circuit that is an input to the internal logic circuit of the door actuator. A 5 volt signal increases the door position. A 0 volt signal decreases the door position. When the commanded door position is equal to the actual door position, the HVAC control module sends a 2.5 volt signal to the door actuator and motor rotation stops. The ignition 3 voltage circuit provides source voltage to the logic circuit. The module provides ground to the actuator logic circuit through the low reference circuit. I would start by having the HVAC control module checked for DTC'S -diagnostic trouble codes First . Then check the system by using scan tool data . 1
Did you perform the HVAC Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - HVAC Systems - Manual

2

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, command the appropriate HVAC door actuator ON and OFF while observing the corresponding Door Actual parameter.
Does the scan tool indicate that the value of the appropriate Door Actual parameter changes?
Go to Diagnostic Aids
Go to Step 3

I would

Apr 02, 2016 | 2003 Chevrolet TrailBlazer

1 Answer

What would cause it to die when I turn on A/C or heater?


Start by checking power an grounds at the control panel ,you'll have to take the plastic trim panel off to get the control panel out . You could have a bad HVAC panel ,
HVAC Control 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. The control module supports the following features:

Dec 17, 2015 | 2004 Chevrolet TrailBlazer

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

1 Answer

I have a 2006 Pontiac g6 gt and my heat or air will not turn on or rear defrost


You have a computer controlled HVAC system ! It has the capability of setting DTC'S - diagnostic trouble codes !
The HVAC control module is a non-GMLAN device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. The battery positive and ignition 3 voltage circuits provide power to the control module. The HVAC control module during defrost mode will change the A/C compressor LED status from on to off. The control head displays recirc, outside air, A/C and rear defrost feedback status through LED indicators. The control head has a rear defrost request switch please refer to Rear Window Defogger Description and Operation in Stationary Windows for operation. The HVAC control head will display NO COMMUNICATION when checking DTCs or doing a vehicle diagnostic system check refer to Diagnostic Trouble Code (DTC) List - Vehicle and Diagnostic System Check - Vehicle in Vehicle DTC Information.
The rear window defogger system consists of the following components:
?€¢
Body control module (BCM)


?€¢
Heating, ventilation, and air conditioning (HVAC) control module


?€¢
Rear Defog relay


?€¢
Rear window defogger grid


Your probably better off taking this to a ASE certified repair facility ! You probably have bad Heater / A/C control panel . HVAC Control Module Malfunction

May 06, 2015 | Pontiac Cars & Trucks

1 Answer

How to replace Dash light on temper control passenger side


Dismantling and mantling.
  1. Remove the I/P accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement (Refer To List 1) or Instrument Panel Cluster Trim Plate Bezel Replacement (Refer To List 2).
  2. Remove the HVAC control module screws.
  3. Depress the HVAC control module tabs (3) and remove the HVAC control module (2) from the I/P (4).
  4. Disconnect the electrical connectors (1) from the HVAC control module (2).

fix the module..... what ever.
and put it back
then see the last step.

Refer to Control Module References for programming and setup information.
then states
If the HVAC control module is replaced, an automatic re-calibration of all the actuators will occur. No additional procedures are necessary.

Jun 30, 2014 | 2006 Isuzu Ascender

1 Answer

HVAC only blows hot air and moves between defrost, panel and floor


vacuum controls stuck work the knob a bit and try to free it..

Dec 29, 2013 | 1998 Oldsmobile Bravada

1 Answer

Change evaporator 1996 cheve truck 1500 350


Removal & Installation To Remove:
  1. Disconnect the negative battery cable.
  2. Drain the coolant from the engine.
  3. Recover the refrigerant.
  4. Remove the glove compartment.
  5. Remove the floor air outlet.
  6. If equipped with a diesel engine, remove the powertrain control module.
  7. Remove the kick panel trim.
  8. Remove the blower motor.
  9. Remove the steering column.
  10. Tilt back the instrument panel assembly.
  11. Remove the coolant recovery reservoir from the engine compartment.
  12. Disconnect the heater hoses and the evaporator tube.
  13. Remove the accumulator.
  14. Remove the fasteners and the HVAC module assembly.
  15. Remove the cover plate on the bottom of the HVAC module.
  16. Remove the heater core and seal from the HVAC module.
  17. Remove the case cover from the HVAC module.
  18. Remove the evaporator core.
HVAC module mounting fastener locations gm-10-00-1003.gif

HVAC module components gm-10-00-1004.gif

To Install:
NOTE: If a new evaporator is being installed, add 3 fl oz (90 ml) of refrigerant oil to the new evaporator.
  1. Install the evaporator core.
  2. Install the case cover.
  3. Install the heater core and the seal.
  4. Install the cover plate on the bottom of the evaporator case to the HVAC module.
  5. Install the HVAC module in the vehicle.
  6. Install the accumulator.
  7. Connect the evaporator tube and heater hoses.
  8. Install the coolant recovery reservoir.
  9. Install the instrument panel.
  10. Install the steering column.
  11. Install the blower motor and cover.
  12. Install the kick panel trim.
  13. Install the powertrain control module and tray.
  14. Install the floor air outlet.
  15. Add coolant to the cooling system.
  16. Connect the negative battery cable.
  17. Evacuate and charge the A/C system.
  18. Check the system for leaks.
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Aug 14, 2010 | 1996 Chevrolet C1500

2 Answers

I changed the battery on 2006 Trailblazer SS. Now I can only get AC from my windshield and floor vents. Nothing from the dash vents. Also the temp control only gives coldest temp. I have checked fuses...


once you disconnect the battery your body control module loses power and memory you have to get some one with a scanner with reprogramming capabilities and have the computers reset ,dealer?

Aug 05, 2010 | Chevrolet TrailBlazer Cars & Trucks

1 Answer

My AC will not stay on the panel ducts. It moves back and forth from panel to defrost and floor. Whats wrong


This sounds like a vacuum line problem from the HVAC control to the panel mode controller. Chances are the correct setting works when you have vacuum ( less than 50% throttle ) and when you press the throttle down, the panel mode changes.

Jul 19, 2010 | 2001 Ford F150 Styleside SuperCrew

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