Question about 2006 Chevrolet Trailblazer Ext

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2006 trailblazer ls v6- A/C only blows on the floor & windshield, not from dashboard. A/C is cold, all fan speeds work. I replaced the relay & 40A fuse in the underhood fuse box, the fuses looked good in the rear seat fuse box. Is there a schematic of the A/C hardware available? Many thanks to anyone who has a possible answer, HAL

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  • Michael Grey
    Michael Grey May 11, 2010

    Is this automatic or manual control hvac?

    Let me know I do have a diagram.

  • Anonymous Mar 30, 2014

    back bottom of driver seat does not come up is it a fues?

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  • 41 Answers

Sounds like it might be a blend door motor, It is located on the drivers side up under the dash on the side of the heater box, try looking at it while turning the knobs on the dash and see if it is changing positions, if not than the blend door motor might be the problem

Posted on Jun 18, 2009

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I just need to see what're the fuses control A/C in Trailblazer 2006

Posted on May 11, 2013

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1 Answer

2006 Trailblazer LS windshield wipers will not turn off.


i have a 2006 trailblazer and the front wiper will not cut off what can i do

Jun 16, 2012 | 2006 Chevrolet TrailBlazer LS

Tip

Tips for operating Air conditioning system on Toyota Hilux and someother...


To cool off your Toyota after it has been parked in the hot sun, drive with the windows open for a few minutes. This vents the hot air, allowing the air conditioning to cool the interior more quickly.

Make sure the air intake grilles in front of the windshield are not blocked (by leaves or snow, for example).

On humid, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

Keep the area under the front seats clear to allow air to circulate throughout the vehicle.

On cold days, set the fan speed to high for a minute to help clear the intake ducts of snow or moisture. This can reduce the amount of fogging on the windows.

When driving on dusty roads, close all windows. If dust thrown up b the vehicle is still drawn into the vehicle after closing the windows, it is recommended that the in intake be set to FRESH and the fan speed to any setting except "OFF".

If following another vehicle on a dusty road, or driving in windy and dusty conditions, it is recommended that the air intake be temporarily set to RECIRCULATE, which will close off the outside passage and prevent outside air and dust from entering the vehicle interior.

HEATING

For best results, set controls to;
Fan speed ---- Any setting except "OFF"
Temperature----Towards WARM (red zone)
Air intake ---- FRESH (outside air)
Air flow ---- FLOOR
Air conditioning ---- OFF

For quick heating, select recirculated air for a few minutes. To keep the windows from fogging, select fresh after the vehicle has been warmed.

Press the "A/C" button on for dehumidified heating.

Choose floor/windshield air flow to heat the voltage interior while defrosting or defogging the windshield.

AIR CONDITIONING

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

For quick cooling, move the air intake selector to recirculate for a few minutes.

VENTILATION

For best results, set controls to;

Fan speed --- Any setting except 'OFF"
Temperature --- Towards COLD (blue zone)
Air intake --- (outside air)
Air flow --- PANEL
Air conditioning --- ON

DEFOGGING

The inside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone) to heat; COLD (blue zone) to cool
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- ON

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

On humid days, do not blow cold air on the windshield. The windshield could fog up because of the difference in air temperature on the inside and outside of the windshield.

DEFROSTING

The outside of the windshield

For best results, set controls to:

Fan speed --- Any setting except 'OFF"
Temperature --- Towards WARM (red zone)
Air intake --- FRESH (outside air)
Air flow --- WINDSHIELD
Air conditioning --- OFF

To heat the vehicle interior while defrosting the windshield, choose floor/windshield air flow.

on Feb 14, 2011 | Toyota Pickup Cars & Trucks

1 Answer

2006 trailblazer ac only blows on #5 speed. Replaced blower resistor & control panel. Also on any lower speed ip lites up i.e. abs, traction control,e-brake &seat belt?


****, you can check some more but from what I am reading your problem could be related to a faulty ignition switch. I am sending you a copy of some fixes.. you can compare to your condition..
Best of Luck to you..

2006 Chevrolet Trailblazer LS 4.2L, Vin S, Eng Cfg L6
Customer Concern: No blower motor function. AntiLock Brake System (ABS), Red Brake Warning Light (RBWL), Traction lights all on. Radio does not work. Tests/Procedures: 1. Check for battery voltage at fuses #31 and 39 in Rear Fuse Box under the rear seat.

2. If the voltage value is less than battery voltage, check the Orange wire at the 48 cavity connector located at the base of the steering column at pin D1.

3. If the voltage is low at C201 check the voltage at pin "G" of the ignition switch.


Potential Causes: Ignition Switch


2006 Chevrolet Trailblazer LS 4.2L, Vin S, Eng Cfg L6
Customer Concern: ABS, Low track light comes on intermittently. The heater blower motor quits running, 4WD not working. No communication with the ABS. If you disconnect the ABS computer and plug it back in, it may work. Tests/Procedures: 1. Test voltage at HVAC 30A, 4WD 15A, HVAC 1 10A, BRAKE 10A, TBC RUN 3A labeled fuses in the rear fuse block during the problem.

2. Inspect connector 101 38 cavity connector mounted along the underhood bussed electrical center. This harness may be routed tightly around the underhood fuse block, causing chafing or connector terminal contact that could induce any of the concerns listed.

3. Clean and secure ground G110 located on the lower left side of the engine block. Potential Causes: Damaged Circuit 300
Damaged Connector C101
Improperly Installed Engine Compartment Harness
Malfunctioning Ignition Switch

Aug 26, 2011 | 2006 Chevrolet Trailblazer

1 Answer

The airconditioner only works in my 2006 H3 when the car is physically moving over 25 mph. If it is going slow or idling there is no air coming from the blower/fan. When it does blow it is only on a low...


There is a HVAC relay and FUSE in the under hood fuse box, have you check both of these? If the blower works on any speed, the blower is good. You say it blows on lowest speed? The blower speed resistor is mounted on the blower housing. The HIGH SPEED BLOWER RELAY is mounted on the blower motor. You may have multiple problems but check fuses first, if all is OK, then a qualified repair shop will need to check further. You do NOT need the whole A/C system replaced. If it does blow cold, thats good, you just need the blower working.

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you have a vacuum leak check the vacuum hoses behind the controll panell

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1 Answer

The A/C works (blows cold air), but only blows up on the windshield, no matter whether it is set to floor, panel or bilevel


Appears to be stuck in the defrost position and sounds like a possible vacuum leak to controls. Look on the firewall under the dashboard. Maybe you can see a vacuum diafhram with a small hose disconnecedt. Look on passenger side first.
If not, Chk to see if a vacuum hose going through the firewall from the engine compartment has come loose. good luck

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