2024 2006 chevy trailblazer ac vents not working

Rear fan not working 2006 Chevy trailblazer. Replced rear resistor power to motor loosing ground somewhere. 180,000 - Answered by a verified Chevy Mechanic. ... My fan for heat and A/C does not work. No air is coming out of the vents on all fan settings (1-5). I replaced the motor blower resistor and still does not work.. Jason welch detroit

Feb 6, 2022 · The most common causes for AC fan blower motor not working in Chevy HHR are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. 1. Buy Now!New Temperature Blend Door Actuator from 1AAuto.com http://1aau.to/ia/1AHCX00282This video shows you how to install a temperature blend door actuator...A faulty fuse or relay. This is one area to check that might be responsible for your dashboard air vents not working. If there is a bad ventilation fuse in your vehicle, the blower motor will not be able to carry out its function by blowing air through the vents. This problem can also occur if your vehicle has a faulty relay; the relay helps to ...Clear all DTCs. Place the ignition switch to the OFF position. Install the HVAC actuator. Connect all previously disconnected components. Remove the HVAC B fuse for a minimum of 10 seconds. Install the HVAC B fuse. Start the vehicle. Wait 40 seconds for the HVAC control module to self-calibrate.The reset most of us know by heart is to pull fuse #36 under the rear seat for 30 seconds. Reinstall it, turn the ignition key to RUN but don't start the engine or touch ANY HVAC control for 90 seconds. They should all run through their CW and CCW travel and recalibrate themselves. If this works, you win!I have a 2002 Trailblazer EXT. The four overhead rear A/C and heating vents are not functioning. Using either the front controls or the rear console controls, you can switch the mode, but air only comes out of the bottom vents in the third row seats. Is there a module to direct the flow of air to either or both the top and bottom vents?You have to stop on the side of the road, let the car cool down, and then continue. It causes a delay of 5-10 minutes or (alternatively) driving while being broiled. The 2006 Chevrolet Silverado ...The most common reasons a Chevrolet Trailblazer cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems. 0 %. 10 % of the time it's the. Control Module. 0 %. 10 % of the time it's the. Sensor. 0 %. 80 % of the time it's the.Mar 11, 2011 · After putting everything back together, my mode actuator stopped working, and I could no longer get the air to blow through the dash vents. I read these posts, and followed several of the tips to get it to reset, with no luck. Testing high pressure switch. 1. With key on, disconnect the A/C pressure sensor and check for five volts on the gray wire. Check for ground on the black wire. 2. If missing either circuit, check a few inches back from the connector and see if voltage or ground is present there. 3.Replacing a blower motor resistor on a 2005 Chevy Trailblazer.Symptoms include heater fan only working on one or a few fan speeds, or not at all.The procedur...How to fix air that only blows through defrost vent. Chevy silverado. Cheap easy fix..l disclaimer: Terrible video footage.Protip: Venmo @Nicholas-Wellmerli...06 Trailblazer Blower fan not working. ... Decide to take it back to the dealership,they said all that needed to be added was AC fluid and then it blew cold air just fine.The AC worked after that fine and then since then I would here a rrrrrrr sounds underneath the steering wheel. ... A forum community dedicated to Chevy Trailblazer and GMC ...This video shows the Air Conditioning & Heater Blower Motor Fuse Locations for a 2002-2009 Chevrolet Trailblazer.2004 chevy trailblazer will not blow air from dash vents after changing battery - Chevrolet 2004 TrailBlazer question. Search Fixya ... SOURCE: 97 Chevy Tahoe dash vents not working. ck for vaccum leaks at engine comparment small plastic lines. Posted on Apr 16, 2009. Helpful 0 ;Front vents NOT blowing air~~~~QUICK FIX, In this video i will show you how to fix low air flow through your cars vents.IF YOU ENJOY MY CONTENT BUY ME A CUP ...49 posts · Joined 2015. #2 · Aug 18, 2020. I recently had the same problem but the cold air was on the passenger side and the hot air was on the drivers side and the knowledgeable guys here said that the actuator is bad. There's 3 actuators on the drivers side and 2 on the passenger side and all 5 are plastic junk but I brought it to the shop ...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...A/c not working Clutch on compressor isn't engaging. ... AC worked fine when parked, I did not open the system up doing the motor swap. 06 RPM lvl 7 Trans 300 stall PCM V3 cam XS headers 33lb injectors 160K miles. Save Share. Like. nojokes09 Discussion starter ... Chevy Trailblazer SS Forum. 2M posts 30.8K members1. I swapped the DMM with the passenger switch result nothing. 2. I took my DMM and put it in my brothers envoy and it worked. 3. I took off the door panel and changed the window regulator and motor. nothing. 4. I took a wire and attached it directly to the battery and the motor went up and down. 5.Aug 13, 2018 ... Comments895 · 2006 Sierra AC Reset; Removing FUSE didn't work · 2004 Silverado passenger blend actuator · 04 Trailblazer Front Vent Fix - ...A faulty fuse or relay. This is one area to check that might be responsible for your dashboard air vents not working. If there is a bad ventilation fuse in your vehicle, the blower motor will not be able to carry out its function by blowing air through the vents. This problem can also occur if your vehicle has a faulty relay; the relay helps to ...I have a 2004 Trailblazer...the rear air vents are not blowing at all. The front air vents are blowing fine. ... when i turn on my chevy trailblazer 2002 my front vents work so well but after a while they stop working they are still running but no air is coming out the front vents at all back ... 2006 chevy trailblazer: air duct dont flow out ...At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself.Describing three most common blower motor problems and how to fix them. DIY friendly.Be sure to also check the "5 Reasons Why Your Car Heater Is Not Working"...After inspecting the belt, there can only be two things left that could be happening: 1. The clutch is not getting a signal to turn on. This indicates some form of wiring problem. -or-. 2. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. 2.First you need to find out what part number to order; just call the local GM dealer. you will need to give them your VIN; the P/N I used was 89018675 and I got it from parts4chevys. $46.33 which was a lot cheaper than the dealership. Remove lower dash covers. The actuator is located behind the middle portion of the dash; if you lay on the floor ...Most blend door actuators have a built-in feedback sensor that keeps the climate control apprised of the door’s position. The most common symptoms of a bad blend door actuator include abnormal …A technician will diagnose your Chevrolet Trailblazer heater using the symptoms you report as a starting point. Because your Chevrolet Trailblazer heater is a complex mechanism that uses an electric fan to blow air through a heater core that is heated by the engine coolant, the problem could be electrical, mechanical, coolant-related, or a combination of these systems.Tests/Procedures: 1. Re-calibrate the actuators. 2. Remove the Heating, Ventilation and Air Conditioning (HVAC) system B fuse #36 for at least 10 seconds. 3. Reinstall the fuse and turn the key on and wait 40 seconds. Potential Causes: Heating Ventilation Air Conditioner (HVAC) Calibration.Step 2 - Test the blower resistor. It may be burned out. You can do this by bypassing the resistor with a jumper wire. It's pretty easy to do; although, it should be noted that you'll want to use a wire with a small enough diameter, so that the resistor's female metal connector terminals aren't damaged.Indices Commodities Currencies StocksThe 2006 Chevrolet Trailblazer has 10 problems reported for heater / ac not working on all settings. Average repair cost is $160 at 70,800 miles. ... Pain in butter heat coming out of face vent ...1. AC Blowing No Air at All. Usually the culprit. If your Chevy Blazer has no air moving through the climate system at all, that’s a lot easier to diagnose than the air that is blowing not being cool enough. When there’s no air flowing through the vehicle’s cabin, a bad blower motor usually causes this scenario.2002 Trailblazer blows cold air out of the passenger side does not blow cold air out of the driver side door driver side air is not hot it's cool we flipped doors by hand but still cool not cold. If you have dual air control. It is the drivers side actuator on the plenum. This can be checked with a scanner.2006 trailblazer ac not working low side 33 high side 180 sucked out recharged ... I have a 2006 Chevy trailblazer with 122,000 miles and I have noticed that when I'm at 50mph and 2000 rpm there is no ... When I changed the air flow direction on the heater to any other direction other than the upper vents I would hear a clicking like the flap ...The 2006 Chevrolet Trailblazer has 10 problems reported for heater / ac not working on all settings. Average repair cost is $160 at 70,800 miles. ... Pain in butter heat coming out of face vent ...The most common reasons a Chevrolet Trailblazer ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. 0 %. 37 % of the time it's the. AC Refrigerant Leak.The most common reasons a 2006 Chevrolet Trailblazer radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor. 0 % 34% of the time it's theMay 16, 2022 · 1. Loose Connections At The Wiring Harness. You replaced it but the new blend door actuator is not working! If the wires come loose at the wiring harness at the back of the module for actuators, replacing the actuator alone will not get any luck. Despite changing the actuator, the blend door actuator will not get the power it needs for operating. The one down by your feet is the drivers. The passengers is buried in the dash. I can R&R one in 4 hours. Plan on 6 the first time. Search instructables.com for silverado dash remove driver passenger remove or How to remove driverside/passanger side temp controll actuators in 04 Chevy Siverado Great step by step write-up.Here is how to test the actuator: 12 volts in run on the Brown wire, 5 volts on the Light Blue and Black, Ground on the Yellow wire. If ok, one at a time, jumper the Tan wire to the Yellow wire and then to the Light Blue and Black. The actuator should move one direction and then the other direction.Feb 1, 2010 · Ac not working at all I had paid someone to change out my factory stereo in my 07 chevrolet trailblazer. When i left i tried using my a/c and nothing was blowing out of the vents at the top. I've tried getting a new a/c control module, replaced it and it still didn't work at all. I disconnected the battery along with the hvac fuses for 30 seconds. Posted on Jun 20, 2010. Failure of mode and/or blend door operation most often tends to be vacuum supply issues. If there is no operation of the doors at all (switching from defrost-floor-vent) then verify vacuum supply on the vacuum line at entry of the firewall (it's easiest to get to). If no vacuum, trace the line back to the vacuum supply.The most common causes for AC blowing hot air in Chevy TrailBlazer are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube ...Replacing a blower motor resistor on a 2005 Chevy Trailblazer.Symptoms include heater fan only working on one or a few fan speeds, or not at all.The procedur...September 2010. I have a 05 chevy trail blazer whereby I hear a resonating, tuning folk-like sound coming from the right, passenger side dash of the vehicle. This sound is very low and intermittent. It is heard when the AC is on. The blower blows cold air after about 3 to 5 minutes of being turned on.2006 trailblazer the blower for the back works and heater. But the blower for the front doesn't. The heat is there but the blower isn't. It will work then it wont then sometimes it will run even with the key out of the ignition. But most of the time it doesn't work. Posted by fishstix5 on Dec 10, 2009.The heater / ac control only works with one or two desired settings.defrost will not work at all (2006 chevy trailblazer) The actuator motor that controls the defrost,to floor,to vent ,has gone out,this will be a job to take to the shop,the dash will have to be pulled out toward the seats to replace the actuator motor.2004 Chevy Trailblazer with broken front vent actuator. For some time my trailblazer would not blow air out of the front vents. It is a common problem for ...2002 Chevy trailblazer LT. I’m having a problem with the HVAC system. The driver side is blowing hot air and the passenger side is blowing cold air when the air conditioning is turned on. I have pulled and replaced the driver side blend door actuator. I have followed the steps to do the recalibration.The most common causes that hinders normal operation of air conditioning system on your Chevy TrailBlazer are dirty cabin air filter, refrigerant leak, dirty or clogged condenser, dirty or clogged evaporator, bad blower motor, defective compressor, faulty blend door actuator or any fault in the electrical system.The most common reasons a Chevrolet Trailblazer cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems. 0 %. 10 % of the time it's the. Control Module. 0 %. 10 % of the time it's the. Sensor. 0 %. 80 % of the time it's the.How to Fix. It is possible to locate the fuse that blows the power to the blower motor from the owner's manual or from the fuse box cover. If a fuse blows, use a new fuse that has a different amp rating. To check the fuse, first remove the fuses from the box by pulling the fuses out with a fuse puller or by holding the fuses in your hand by ...SOURCE: 2006 chevy trailblazer heater blower motor not working. ... If you can hear the blower on all speeds but still no air is coming out the vents, the issue might be either a damaged diverter door that is not properly directing air flow or possibly something got sucked in to the blower motor squirrel cage and is severely restricting air ...2006 chevy trailblazer ext,replaced the battery now no air flow from dash vents,just floor and defrost,is there a way to - Answered by a verified Chevy Mechanic ... The A/C vents on the floor and the defrost work, but the dash vents do not unless I pull the HVAC B fuse inside. ... 2004 Chevy Trailblazer XLT: there is no air coming from the dash ...2004.5 Chevy silverado LS LLY 5" exhaust straight piped, afe cold air intake, efi tuned by Idaho rob, LBZ turbo mouth piece, 15% tint, ppe shim kit, edge cts gauges, 8000k hid's in highs and lows 2006 Chevy Trailblazer LT all stock 2006 yamaha raptor 700R all stock www.alligatorperformance.comIf you find the parts not fit your car when you received, pls kindly send it back with undamaged package. If you are unsure remove your factory blower resistor and insure it looks like the one pictured. Compatible with Buick. Rainier 2004-2006 . Compatible with Chevy. Avalanche 1500 2003-2006 . Avalanche 2500 2003-2006 . Silverado 1500 2003-2006Describing three most common blower motor problems and how to fix them. DIY friendly.Be sure to also check the "5 Reasons Why Your Car Heater Is Not Working"...1991 Chevy Truck K 1500 Truck 4WD V8-350 5.7L HVAC Control Head - Inoperative, No Display Vehicle Heating and Air Conditioning Control Assembly Technical Service Bulletins HVAC Control Head - Inoperative, No Display HVAC CONTROL HEAD - INOPERATIVE, NO DISPLAY Number: 93-44-1A Section: 1A Date: NOV. 1992 …1. AC Blowing No Air at All. Usually the culprit. If your Chevy Blazer has no air moving through the climate system at all, that’s a lot easier to diagnose than the air that is blowing not being cool enough. When there’s no air flowing through the vehicle’s cabin, a bad blower motor usually causes this scenario.It is located under the dash on the passenger side. SOURCE: Heat wont blow through heater or defroster vents. common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost. SOURCE: There is no air flow.2002 Chevy Trailblazer: Heater/AC fan does not work, all heater controls unresponsive. Simultaneous with this Yellow ABS - Answered by a verified Chevy Mechanic ... I have a 2006 chevy Silverado, this week while driving it would flash lights on the dash, specifically the ABS warning light, and read the "service braking system" message.The new tool is an HVAC Puller, special tool number GE-47676, which was shipped in the Fall of 2004 to all Chevrolet and GMC dealers. It will no longer be necessary to replace the entire Mode Door Cam Assembly when only the Mode Door Actuator requires replacement. Previous to the release of this tool, it was necessary to remove the entire ...16WhiteColly. If fog was coming from the vents, the evaporator core, inside the index dash box must have been froze up. That new 1234 Freon has been causing a lot of this freeze up condition. The previous 134 was not a problem other than it just did not cool as good as the R-12, but was not freezing up like the new 1234.️A/C Vents: Not Working "FIX"06 Chevy Trailblaizer"🔥.Here I show you a possible solution for when you disconnect your battery and then your a/c now does no...Mar 12, 2021 · The most common causes that hinders normal operation of air conditioning system on your Chevy TrailBlazer are dirty cabin air filter, refrigerant leak, dirty or clogged condenser, dirty or clogged evaporator, bad blower motor, defective compressor, faulty blend door actuator or any fault in the electrical system. K&N Performance Air Filter - Premium Lifetime, Washable,... Part Number: K33E1009. Guaranteed to Fit. $79.99. 0. Add to Cart. Vehicle Fitment. 2006 Chevrolet Trailblazer LT 6 Cyl 4.2L. 2006 Chevrolet Trailblazer LS 6 Cyl 4.2L.Use a screw driver or a butter knife works also to pop out the grille part of it and the two screws are in the vent. Lt1z cam and some jank obx headers, ls3 intake, l92 heads milled, 32-3400 transmission specialties converter, 417/412rw, really just a bunch of junk other than the cam. Tooned buy TXBlownTBSS, [email protected] 1.65 60' on 20's.Heater Fan Not Working Properly 5. Heater Connector Glowed Red Hot 4. Smoke Coming Out Of Vents While Ac On With Plastic Smell 3. Heater Fan Won't Stop Running When Key (Switch) Is Off 2. A/C ...The most common reasons a Chevrolet Trailblazer ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. 0 %. 37 % of the time it's the. AC Refrigerant Leak.The heater may stop working in Chevy TrailBlazer due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or HVAC control unit malfunction. 1. Low coolant or air in the cooling system. Low coolant level or air in the cooling ...In this video I try to figure out why my rear air won't work on my 2003 Chevy Trailblazer EXT. The extended Trailblazer has rear air conditioning, and there ...Hi ok i was having a problem whit this 2004 trailblazer it all stared when i disconected the battery and i putted back on Wiht ac on the 2 vents on passing...Crash Tests 3. Recalls 8. Investigations 8. TSBs 752. Lemon Law. CarComplaints.com Notes: Carrying the not-so-proud traditions of its 2002 predecessor, the 2003 has a handful of instrument panel ...The most common causes for AC blowing hot air in Chevy TrailBlazer are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Less common causes are clogged expansion valve or …About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...6 posts · Joined 2014. #1 · Feb 1, 2014. i have a 2002 gmc sierra 2500 diesel. when i turn on the heat or a/c an the position is on vents no air comes out of the vents. all speeds work fine, an you can hear the blower motor an all. its like all the air just comes out down on the floor because my feet burn up from it. an also no air from the ...2005 trailblazer dash vents not working I have a 2005 chev trailblazer I changed out the battery today and the dash - Chevrolet 2003 Blazer question ... When you change air flow direction from defrost ,to floor ,to vent . does air flow change ? Where is the air coming out of ? ... 2011 • 2006 Chevrolet Trailblazer. 2 helpful.Front vents NOT blowing air~~~~QUICK FIX, In this video i will show you how to fix low air flow through your cars vents.IF YOU ENJOY MY CONTENT BUY ME A CUP ...May 3, 2019 · At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself. The fix: Shut off the A/C-Heater and leave it off for about 2 minutes. Restart the A/C with the driver's side on maximum heat and the passenger's side on full cooling. Run it this way for a minute or more. Shut off the A/C-Heater and leave it off for about 2 minutes.The most common causes for AC blowing hot air in Chevy TrailBlazer are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Less common causes are clogged expansion valve or …Have a 2004 Chevy Trailblazer LS. A/C will not blow out of dash vents. Heater and defrost is fine. Told it was an actuator. Have dash tore apart but do not know where actuator for this problem is located. There's two of them up high and one low towards the back of the box near the console on the driver's side.Rodney: My HVAC blows hot and cold but all vents are open except driver and passenger feet vents. I bought a mode actuator but that didn’t solve the problem. I recalibrated the hvac many times via snap on scan tool. Pressing the mode button doesn’t change the vents direction. I have two codes b0159 and b3761. Help … Continue …1 answer. The fan will not kick on...on my 2006 Trailblazer. Fuses look good along with the relays. The compressor seems to be working fine. Can't get air to flow through the vents. The list of things that could be bad; blower motor, blower motor resistor pack (control module), resistor pack wire harness, fan selector switch and fuses.Most blend door actuators have a built-in feedback sensor that keeps the climate control apprised of the door's position. The most common symptoms of a bad blend door actuator include abnormal noises, incorrect climate control outlet temperature, and varying outlet temperatures. Electrical faults and damaged gears are some of the reasons why ...What's up guys bring you as a video showing you guys how to fix the AC vents on any Silverado all the way from 1999 to 2007 pretty much the little vent actua...This video tutorial will show you how to replace the AC / Heat blower speed resistor in a 2002 - 2006 GMC Yukon.AC / Heat Air Not Blowing? Only Some Blower ...Engine Compartment Fuse Box Diagram. The engine compartment fuse block is located in the engine compartment, on the passenger's side of the vehicle. Fuse box diagram, location of fuses and relays Chevrolet TrailBlazer, GMC Envoy, Isuzu Ascender, Buick Rainier, Oldsmobile Bravada, Saab 9-7X (2002-2009).

This is a small servo motor that turns the door internal of the HVAC housing. There is a recalibration procedure for the actuator that you can 'try' first: Place the ignition switch to the OFF position. Remove the "HVAC" fuse (located in the rear fuse block) for a minimum of 10 seconds. Re-install the HVAC fuse.. Southwest flights to san jose

2006 chevy trailblazer ac vents not working

#1 · Aug 19, 2012. 2002 Trailblazer LTZ. Problem: The AC blows fine through the middle and rear seating area vents, but nothing at all through the front front vents/lower vents …The problem: I have a 2006 Trailblazer EXT with manual HVAC controls. The rear HVAC temperature, vent mode, and blower controls stopped working completely. The rear HVAC can be operated using the front controls, but sometimes the rear vents will not change positions when I move the vent switch, and the rear blower acts really strange.If voltage goes to the blower motor, it'll need replacing. If there's no voltage, test the resistor (YouTube). 2. AC System Not Blowing Cold Enough. The most common reason for your Chevy Tahoe's AC not blowing cold enough is low refrigerant levels, followed by a dirty evaporator or condenser issues (bad or clogged).Vents on dash will not blow air all other vents work great, ... i have a 2006 chevy trailblazer that wont blow air form the upper vents, blows from defrost, and floor,,,,i was told it is a faulty blend door actuator or a mode door actuator. but which is it im comf ...Is your rear AC not getting hot or cold and making clicking noises? Are there issues with switching the direction the air blows? You may need to replace your...Jan 24, 2023 · Car AC Blows Cold on One Side and Hot on the Other - Diagnose and Fix. Description. If the car AC blows cold air on one side and hot on the other, there are a few different causes but it's likely the blend door actuator, also known as the temperature blend door actuator or vent mode door actuator. Author. 1A Auto Team. Fix Or Replace Mode Actuator Motor. Check manually if the mode actuator is working. If it does not work on the first try, the mode actuator must be faulty, and you have to change it. If the mode actuator works but the air doesn't change, the problem is jammed air. In that case, clean the insides of the mode actuator.My 2002 Trailblazer was only blowing out the Dash vent after replacing the battery this last spring, Then when my wife tried the AC, the pop off valve kicked and lost some refrigerant, I let it be since I usually don't use the AC anyway, Now it is cold and the floor vents are not working. I tried the reset with no luck.Mar 11, 2011 · After putting everything back together, my mode actuator stopped working, and I could no longer get the air to blow through the dash vents. I read these posts, and followed several of the tips to get it to reset, with no luck. 6513 posts · Joined 2006. #2 · Jun 3, 2008. There is a mode actuator in the rear to direct air flow (we sometimes call it a mode door). It's a flap that responds to the switch and changes air flow. It's in the rear (behind that panel the floor outlet is in), but I don't know where. But in the try simple things first thought, did u look at the ...CarComplaints.com Notes: The Trailblazer emerged from an "upscale trim line" of the Blazer, but there's nothing upscale about its transmission problems or its wonky, unpredictable headlights. 6.0 ....

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