2006 chevy trailblazer ac vents not working - 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.

 
1,535 Posts. Discussion starter · #22 · Jun 3, 2008. I found what the problem was. It was the connecting rod going from the outlet servomotor to the dampers for the center vents. The clips had broken and the push rod was no longer attached. While it was detached, the center vent damper and the floor vent dampers got jammed together.. Rakukaja

Here are a few of the most common electrical problems that can keep your Chevy Trailblazer’s air conditioner from working correctly. Look for these if the vehicle’s air conditioner isn’t working at all: Switch failure; Blown AC system fuse; Bad control module; Harness damage at the AC compressor4.2L. 6 CYL. 2WD. AUTOMATIC. 133,484 MILES. Recently my front vents stopped working on my vehicle. I've tried to re-calibrate by taking out the fuse, waiting a couple minutes, putting the fuse back in, turning the car to run, letting it go through its motions, but that didn't work. The air blows cold, but it is only coming out at the feet, side ...Drivers changed air temperature far more often than they change the mode (defrost, floor heat, dash vents, etc.), so the temperature actuators generally fail first. When that happens, the HVAC system can be stuck on blows cold air or blows hot air. In a dual zone system, you wind up with a blows cold one side, hot on other side condition.3. Remove the instrument cluster trim bezel nuts (2). 4. Lower the steering column. 5. Move the shift lever to the first gear position. 6. Pull on the instrument panel cluster (IPC) trim plate bezel (1) in order to disengage the retainers. Pull in the following sequence in order to disengage the retainers.If 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 2003-2006This is a common problem on the Trailblazer. This is due to failure of the mode actuator. To fix the problem, the mode actuator will need to be replaced. It is located on the left side of the heater case and can be accessed from under the drivers side of the dash. Experience: ASE Master Certification.It is called the mode door actuator. It controls air flow out the vents. Roy. 1. Remove the floor air outlet duct extension (1) from the floor duct (2). 2. Remove the center console. 3. Remove the screws from the center console duct.Chevrolet 2003 TrailBlazer For a digital air flow system try resetting the HVAC unit. Either take out the fuse for the HVAC module or disconnect the battery for 5 or 10 minutes. Reconnect battery or replace fuse. Turn the ignition to ON and DO NOT STARTor ATTEMPT to START ENGINE !!.You should hear the actuators, motors etc resetting.From the driver's seat, turn the vehicle to ON (but do not start it) - I immediately hit the "OFF" button on my HVAC to make sure it does not try to come on. If you have everything off (including the radio) you will likely hear the blend doors cycling to their limits.Cigar lighter (power outlet) fuses in the Chevrolet TrailBlazer is the fuse №13 (Cigarette Lighter) in the Underhood Fuse Box and fuses №15 (2002-2003, Auxiliary Power 2), №46 (Auxiliary Power 1) in the Rear Underseat Fuse Box.The most common causes for bad AC smell in Chevy TrailBlazer are dirty cabin air filter, dirty or moldy evaporator coil, clogged condensate drain, and mold growth in the air ducts. In rare cases, bad smell from the air vents can also be caused by rodent infestation. 1. Clogged cabin air filter. Dirty AC filter is one of the leading causes of ...Ignition off, pull the HVAC/ECAS fuse for 10 seconds, reinstall and start vehicle without touching any controls, wait 40 seconds for the control module to self calibrate. If there is still a problem, the actuator for the temp blend door may have failed. Scan the HVAC for codes. This did it. Thank you!13 posts · Joined 2008. #1 · Aug 8, 2008. I have a 05 trailblazer 4x4, v6, with 60,000 miles. here recently my air conditioner/heater has stopped working. We checked all of the fuses and all are good. We thought maybe the a/c just needed to be recharged so we did that, and that was not the problem. I know the a/c is working because it frosted ...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 ...2003 Chevy Trailblazer ext: .(65,000 miles..work fine..warmer..cooler. I have a 2003 Chevy Trailblazer Ext.(65,000 miles) with A/C problems. Last year at this time when I'd run the A/C it would work fine for a few moments, ... My 2006 Trailblazer vents for H/AC do not blow except at the feet or defroster.Need the part? https://amzn.to/46aWCImLost speeds on your AC in your Chevrolet Trailblazer, GMC Envoy or Buick Ranier? In this video we replace the Blower Mo...Disconnect the air injection hose from the bottom of the intake tube. There is a brown clip attached to the intake air sensor. Disconnect this clip, be careful with a smooth and steady force, it's in a "C" shape. Remove the two bolts that hold down the resonator box. This is the box with the Vortech 2400 imprinted on it.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 ...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.My 2002 GMC Envoy is having A/C problems. I decided to swap an A/C actuator to see if it would fix the problem, it did not. I have to get another A/C control...Chevrolet Master. 21,873 Answers. If you are saying the blower motor is not working, it could be the motor or the resistor among other things. Posted on Sep 30, 2012. Anonymous. 288 Answers. SOURCE: Chevy TrailBlazer heat won't shut off. Posted on Jun 21, 2009. dr260.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. Ask Your Own Chevy Question. Ok.Hi in this video I will show you how to confirm the fix on you vent no blowing airYou 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 ...Step-by-step guide on how to install / remove / replace middle dashboard air vents on Chevy Tahoe ( 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | P...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 ...To fix this you need to remove the entire dash to get the heater box out which involves discharging the AC and draining the coolant because the heater core and evaporator come out. Please rate. 783 Answers. Posted on Mar 02, 2009. SOURCE: Vent control. You have a vacuum leak.Defrost is the default postion (no vacuum).Indices Commodities Currencies StocksHere is the re-calibration procedure: Pull the HVAC-B fuse for 30 seconds with the ignition is off. That resets the memory in the controller. Then put it back in, turn the ignition to run, but there's no need to start the engine. Listen for the next 90 seconds as the actuators are all run through their paces.Maximize. The 2005 Chevrolet Trailblazer has 22 problems reported for blower fan motor stopped working. Average repair cost is $300 at 69,600 miles. (Page 1 of 2)Driver side air conditioning blows hot air while passenger side blows cool air on 2006 Chevrolet Trailblazer. I would start by checking all your fuses. Then I would check the A/c control panel on your dash. There is little vaves inside those black boxes under the dash.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).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 defroster does work. When I first start the car I can feel air, for a couple of seconds, blow through the vents and then it stops. The car was dying when idling and messing with the ...Ac / Heater not blowing Blower Motor Easy Fix-Chevy and Ford and many other makes and models of Vehicles.To Support Flashback502:PayPal: https://www.paypal....I am working on a 2003 Chevy Trailblazer, and the vents continually blow out warm air and when you turn the air to blow on the floor or even defrost it keeps blowing out the dash vents and does not bl ... On my 2006 Trailblazer LT, I can not get airflow out (hot or cold) of the four chest vents with vents open. ... The heating and air ...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.Answered by a Fixya Expert. My 2004 trailblazer will only blow out of the defrost vents and the floor vents when you use the heat or A/C. what can cause this problem. My keyless remote wont work either. The gate door wouldn't open one day so my husband had to manually open it. Could both these problems be caused by the same thing.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.1. AC Blowing No Air at All. Usually the culprit. If your Chevy Avalanche 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 truck's cabin, a bad blower motor usually causes this scenario.AC vent actuator (which one) ... Wow, I'm stupid.... I re-read my first post and what I meant to say was my DEFROST and FLOOR vents work.... My dash vents do NOT work. Save Share. ... A forum community dedicated to Chevy Trailblazer and GMC Envoy owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting ...The most common causes for AC fan blower motor not working in Chevy Cobalt 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.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 …No mouse nests... car is well maintained. Since the one disconnect of the battery (and then thru all the 'attempts' at resetting the HVAC system - disconnect batt., follow time requirements, etc) the 'drivers' side gets a very slight 'breeze' of air (this is 'even' if all is off, or we've put mode on 'dash' only, floor only, all other mixes) out of the "dash" vents. It is always warm and heats ...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 ...Dec 5, 2013 · To fix this you need to remove the entire dash to get the heater box out which involves discharging the AC and draining the coolant because the heater core and evaporator come out. Please rate. 783 Answers. Posted on Mar 02, 2009. SOURCE: Vent control. You have a vacuum leak.Defrost is the default postion (no vacuum). From the driver's seat, turn the vehicle to ON (but do not start it) - I immediately hit the "OFF" button on my HVAC to make sure it does not try to come on. If …2006 Buick Rainier 83,000 mi, Visitor. Battery was replaced by Sears, only now the Air Conditioning and outside vent air only blows at the bottom and defrost vents on dash and sides but never through the front passenger and rear passenger vents. Fuses were checked at the engine compartment and under the rear seat.not sure but somehow my daughter says i have no air, no heat, no blower motor in the back passenger area. this is my daughters car and i am the official Mr. Fix it please . yes i have checked a 10 and a 30 amp fuse which shows it is an a/c fuse. i am not finding a rear a/c seperate fuse location. thank you, Rocket ManWe got it home, everything was fine, and then the battery went dead. The next day we went and got battery, and about 2 hours after we replaced it, the panel vents quit working, but the floor and defrost still worked. You could still change the temp and speed, but no matter what mode, the floor and defrost were the only vents to blow.On Amazon:*BLOWER MODULE: https://amzn.to/3awI8q8Quick overview on how to diagnose/replace the hvac blower control module on a 2004 Chevy Trail Blazer. If t...1. 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.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.Press the AUTO button. This may be located on the centerstack, within the climate app on your infotainment screen or in both places. Locations vary by vehicle; check your Owner’s Manual. Set your desired temperature. The system is designed to adjust the fan speed, air flow distribution and delivered air temperature to quickly and efficiently ...Air doesn't come out my vents at all. 4 days and 168,000. ... My A/C controls do not work. Previously, the air was stuck on feet only and woul dnot chang modes to blow on face. It WAS cold, but only on feet. ... I have a 2006 chevy trailblazer SS and the blower motor will not turn off even with the key off doors open only pulling the fuse will ...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 ...I am working on a 2003 Chevy Trailblazer, and the vents continually blow out warm air and when you turn the air to blow on the floor or even defrost it keeps blowing out the dash vents and does not bl ... On my 2006 Trailblazer LT, I can not get airflow out (hot or cold) of the four chest vents with vents open. ... The heating and air ...If the air vents of the Chevy trailblazer 2004 are not blowing air, have the fuel pump checked. ... The blend door actuator may not be working. ... Where are the fuel injectors on a 2006 dodge ram ...My 2006 Trailblazer vent defrost and heat control stopped working. ... I have a 2003 chevy trailblazer, the dash vents will not produce air flow. ... (2000 Chev S10 4WD) floor vents no longer work for AC or heat. I also notice a slight odor coming out of the vents when my defrost/vents/AC is operational.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.2006 - 2009 TrailBlazer SS Tech. 06-09 SS Appearance. Exterior. Blacked out air vents. Jump to Latest Follow 3K views 7 ...not sure but somehow my daughter says i have no air, no heat, no blower motor in the back passenger area. this is my daughters car and i am the official Mr. Fix it please . yes i have checked a 10 and a 30 amp fuse which shows it is an a/c fuse. i am not finding a rear a/c seperate fuse location. thank you, Rocket ManSOURCE: 1991 chevy g20. 5.7l v8. air conditioning does not work. the blower and switches seem to work fine but it does not cool and only blows out of defrosters. Blowing out of the defrost is a vacuum problem. You have a leak between the motor and the heater controls. Most likely needs to have the A/C system charged up. Posted on May 30, 2009Hi in this video I will show you how to confirm the fix on you vent no blowing airStep-by-step guide on how to install / remove / replace middle dashboard air vents on Chevy Tahoe ( 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | P...During the summer while the air conditioning would be running hot air would start coming out. During the winter the opposite would occur. The 2004 Chevrolet Silverado has 11 problems reported for ...Press the AUTO button. This may be located on the centerstack, within the climate app on your infotainment screen or in both places. Locations vary by vehicle; check your Owner’s Manual. Set your desired temperature. The system is designed to adjust the fan speed, air flow distribution and delivered air temperature to quickly and efficiently ...I have an 03 Trailblazer, the front vents do not blow ac or heat. The back vents all work as normal. Also there is a loud popping noise in the back passenger side of the car before the back vents really get going is this related. ... My 2006 Trailblazer vent defrost and heat control stopped working. ... HAVE A 03 CHEVY TRAILBLAZER, HAVE HEATING ...Air doesn't come out my vents at all. 4 days and 168,000. ... My A/C controls do not work. Previously, the air was stuck on feet only and woul dnot chang modes to blow on face. It WAS cold, but only on feet. ... I have a 2006 chevy trailblazer SS and the blower motor will not turn off even with the key off doors open only pulling the fuse will ...I have a 2006 Chevy Trailblazer and the AC is not working consistently. It comes on and off on short trips but on longer trips it will cut out completely and just blow warm air. I have checked the coolant level (fine), changed the AC relay in the fuse box, and installed a new belt tensioner.Jul 28, 2021 ... Fixing A/C in under five minutes and it's free! 2009 Chevrolet Avalanche air conditioning malfunction after battery disconnected, ...2006 Buick Rainier 83,000 mi, Visitor. Battery was replaced by Sears, only now the Air Conditioning and outside vent air only blows at the bottom and defrost vents on dash and sides but never through the front passenger and rear passenger vents. Fuses were checked at the engine compartment and under the rear seat.Advertisement Most land volcanoes have the same basic structure, but volcano shape and size varies considerably. There are several elements that these different volcano types have ...0 helpful. 1 answer. Ac blow hot air in left vents and cold air in right vents-changed battery after it totlally died. AC worked fine before battery crapped out. 02 chevy trailblazer. think you have damaged the heating control computer from the sound of it.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 ...no air from dash vents - Chevrolet 2006 Trailblazer question. Search Fixya ... No air from dash vents - 2006 Chevrolet Trailblazer. Posted by lite616 on Jul 02, 2010. Want Answer 0 ... Cables from contol to vents not working. Read full answer. Jul 21, 2012 • Chevrolet Malibu Cars & Trucks.Once the leak has been found, this must be closed again by replacing the respective component. 4. Dirty evaporator. Dirty evaporator can also be the reason for AC problems on your Chevy TrailBlazer. Cabin air filter captures most of the dirt or other airborne particles, but some escape and fall on to the evaporator.2006 - 2009 TrailBlazer SS Tech. 06-08 SS General Tech Q&A. General Heat blows cold only on one side ... 1 is to control percentage of air flow to dash vents vs floor vents ... A forum community dedicated to Chevy Trailblazer and GMC Envoy owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, towing ...How to fix air that only blows through defrost vent. Chevy silverado. Cheap easy fix..l disclaimer: Terrible video footage.Protip: Venmo @Nicholas-Wellmerli...4.2L. 6 CYL. 2WD. AUTOMATIC. 133,484 MILES. Recently my front vents stopped working on my vehicle. I've tried to re-calibrate by taking out the fuse, waiting a couple minutes, putting the fuse back in, turning the car to run, letting it go through its motions, but that didn't work. The air blows cold, but it is only coming out at the feet, side ...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 ...Bulletin No.: 04-01-38-019A. Date: June 07, 2005. TECHNICAL. Subject: Intermittent Slow to Cool HVAC Performance Concerns in High Ambient Temperatures and/or High Humidity Conditions After Start Up, Especially at Low Engine Speeds (Install New Engine Cooling Fan Clutch) Models: 2004-2005 Buick Rainier 2002-2005 Chevrolet TrailBlazer Models 2002-2005 GMC Envoy Models 2002-2004 Oldsmobile ...Chevy Mechanic: Jerry Newton. There is a mode door actuator that is located and serviced here: 1. Remove the left side sound insulator screws. 2. Remove the left hand floor duct. Refer to Floor Air Outlet Duct Replacement - Left Side . 3. Disconnect the electrical connector from the mode actuator.CHEVROLET TRAILBLAZER ... Air Conditioner Front Vents Do Not Blow Heat Or... The A/c Doesn't Work, The Front Vents Don't Blow Heat Or Anything, And The Rear Vents On The Ceiling Only Start Blowing Some Heat... Asked by Dranma ...I could not get any air (hot or cold) from the dash vents, only air blowing from the defrost vents and foot vents, and the back seat vents. After hours of searching I could not find my exact car help, but it sounds like this was the mode door actuator, and the dealer wanted $875 to replace this, the dealer said they probably would have to ...

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.. How great thou art susan boyle

2006 chevy trailblazer ac vents not working

2003 Chevy Trailblazer ext: .(65,000 miles..work fine..warmer..cooler. I have a 2003 Chevy Trailblazer Ext.(65,000 miles) with A/C problems. Last year at this time when I'd run the A/C it would work fine for a few moments, ... My 2006 Trailblazer vents for H/AC do not blow except at the feet or defroster.This is a common problem on the Trailblazer. This is due to failure of the mode actuator. To fix the problem, the mode actuator will need to be replaced. It is located on the left side of the heater case and can be accessed from under the drivers side of the dash. Experience: ASE Master Certification.On Amazon:*BLOWER MODULE: https://amzn.to/3awI8q8Quick overview on how to diagnose/replace the hvac blower control module on a 2004 Chevy Trail Blazer. If t...Chevrolet Master. 21,873 Answers. If you are saying the blower motor is not working, it could be the motor or the resistor among other things. Posted on Sep 30, 2012. Anonymous. 288 Answers. SOURCE: Chevy TrailBlazer heat won't shut off. Posted on Jun 21, 2009. dr260.2004 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 ...Step 1: Take out the blend door actuator. Take out the Chevy blend door actuator, located near the heater box using a screwdriver, and disconnect the wiring clips. The clips may break if they are brittle, so work with a light hand. Press the wiring connector tab, remove the clips and pull it off.GM Tech (Cam) : The door actuator that sounds to be faulty is on the drivers side of the heater case. GM Tech (Cam) : If you take the knee bolster off and the heater duct you can get at it. Customer: well the air wont blow air from upper vents ,,is a trailblazer lt or ls not sure ,wife took it, 2006. GM Tech (Cam) :This calibration procedure worked for me: Ignition off, A/C off, blower switch off, remove fuse 36 (or disconnect the battery), wait 2 mins, insert fuse 36 (or reconnect battery), ignition two clicks to run but don’t start, wait 2 mins, start car, turn on A/C & blower, test mode switch. Everything should work now.When the truck is shut off the gauge goes well past full. I just filled the tank to run the Techron fuel system cleaner, the gauge read slightly over the "F" full mark and took 10.5 gallons. Here are two pics with the full tank of gas. With the truck NOT running see the gauge reading Full. With the truck RUNNING see the gauge WELL OVER FULL.The most common causes for AC fan blower motor not working in Chevy Colorado 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.Replace the battery. If the button cell battery in the key fob of TrailBlazer is replaced incorrectly or a battery is unsuitable, it can damage the vehicle key. Only replace drained batteries with new batteries in the same voltage, size, and specification. Make sure the battery is facing in the right direction when inserting it.Like. JAY4SPEED. 4117 posts · Joined 2008. #3 · Mar 10, 2009. Blend doors are for temperature control, the mode door actuator is what you are after. And yes it is a bitch to replace. If you remove the hush panel from the bottom of the driver side dash, lay down and stick your head by the gas pedal, look up and there it is.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.The most common causes for AC not cooling properly in Chevy TrailBlazer are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend ...The Bad. 63 posts · Joined 2007. #26 · Jan 10, 2008. The PCM inhibits the cruise control operation when any of the following conditions exist: * The PCM detects that the center high mounted stop lamp (CHMSL) is not operating properly. * A Cruise Control System related DTC has been set.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 ;.

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