2004 silverado blowing hot air

Last UpdatedMarch 5, 2024

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Remove the two 7/32 bolts from the door actuator. Then winter came, defrost was on and heat was going solid. The driver side is blowing hot air and the passenger side is blowing cold air when the air conditioning is turned on. Check in the main radiator with the motor cool that the coolant is full as if the coolant is low there will be no heat in the heater. A/c and everything worked, then ac stopped. The heater blend doors act as a gateway to the vehicle's ventilation system. Sep 16, 2022 · The most common causes for AC blowing hot air in Chevy Silverado 3500 HD 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. If they are both about the same temperature I would say you have a problem with a blend door actuator. Should be under dash on passenger side. The actuators go bad and will default to hot air. The passenger side remains cool. This happens intermitently. At 830 I went out to my truck at break and started my truck. If your Chevy Silverado’s climate control system blows hot or cold air inconsistently, this could be a sign of a malfunctioning thermostat or a clogged air filter. Air Conditioning problem. Nov 19, 2012 · The last setting selected will activate when the blower is turned back on. Jan 5, 2021 · This video tutorial will show you how to replace the AC / Heat blower speed resistor in a 2002 - 2006 Chevy SuburbanAC / Heat Air Not Blowing? Only Some Blo Mar 26, 2022 · The most common causes for AC not cooling properly in Chevy Silverado 2500 HD 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. Jun 19, 2009 · Read all the sites on AC /Hot/Cold After several months of hot air blowing on the drivers side and cold on the passenger side and trying ALL the great tips (none of which worked) I got it. In this video, I will show you how to diagnose temperature controls. 8L engine. You may have to take in and have a good Tech. Run for 15 seconds. Most of the time when the problem starts all of a sudden and then will reset after the vehicle is restarted then the problem is the module. Shuttle. The dealer removed the dash to fix the problem. Find the three HVAC fuses; Two are under the hood and one is in the cab fuse box. Jun 7, 2010 · Shut off the A/C-Heater and leave it off for about 2 minutes. The motor that controls the shutter is also functional. #1 · Jul 1, 2013. /. Sep 22, 2009 · 2004 2500 6. While my ac is on both sides, the PASSENGER side will go from working correctly, to blowing full heat after about 5 minutes. Sometimes go 30-40mins with it blowing cold and then suddenly hot air and sometimes just 5- 10mins. Like. Jul 26, 2019 · First, check the condenser to make sure it’s not blocked by any debris. There have been reports that the AC in some Silverados blows only hot air even when set to blow cold air. My 2004 Chevy Impala only blows cold air with heat on. Less common causes are clogged expansion valve or orifice Jun 26, 2009 · Chevy Mechanic: Michael Moore. #1 · Feb 1, 2014. May 8, 2014 · First best thing to do is go get a vacuum evacuation and refill. got plenty of coolant. After bout 10 mins I noticed that the air wasn't coming out of the floor vent after turning up the blower. Apr 14, 2016 · If the gauge is less than 200 degrees F, the thermostat needs to be changed. If the gauge is indicating 200, 210 degrees F, the coolant temp is good, the thermostat is good and you probably have poor flow through the heater core. I'll check it in the morning when it is at 210 and not yet producing heat. 0. If the blower motor stops working due to a fault, the air will not flow out of the vents when you switch on the AC in your Silverado 1500. The passenger side still blows cold. Oct 5, 2010 · 1751 Heritage Center Dr, Wake Forest, NC ( 47. You need to find out when it does this, if the compressor is running. Place the ignition switch in the RUN position and wait 40 seconds for the ECC module to initialize. Lucky for you, the easy one to replace went bad. Feb 11, 2016 · ezskanken. If it is going on for a few seconds, then off- that's "short cycling" and is indicative of the above mentioned problems (but not a duct door). NO HEAT. This actuator is what turns the door inside the HVAC housing between heat and A/c depending on the control panel setting. For about a year now, my a/c was doing funny stuff. an also no air from the Apr 29, 2020 · Chevy Mechanic: Gabriel Grey. With outside temperatures in being 71 this morning the ventilation on my truck continued to blow hot air. Check Availability. SOURCE: 04 Chevy Silverado. step 2 :Installing the Air Temperature Door Actuator. Jun 23, 2011 · Remove the four 7mm bolts from beneath the glove box. I have had my AC pump fail before & if the AC pump fails it should still blow cool air but not AC air. Jul 29, 2013 · AC would suddenly blow hot air just on the driver's side while the passenger side still blew cold. 2439 posts · Joined 2010. I checked my a/c freon and was good there. I have a 2004 silverado SS and my truck blows hot only air intermittently. Couple of pointers: Unhook the battery first. If just one side blows hot then check the blend door. This 2004 Chevrolet Tahoe came in with the complaint that the air on the driver’s side would change from cold to hot while driving down the road. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Mar 12, 2014 · 2004 1500 silverado-4wd blows hot air all the time, vents or defrost, sometimes blows 10amp fuse on side of dash. So my next check was to be the mode door actuator. Could also be a stuck duct door, but that's usually less likely. i have a 2002 gmc sierra 2500 diesel. Apr 9, 2014 · 2009 chevy AVEO 5 ac blows hot air 2009 chevy aveo ac blows hot air i put a can of freon in and it still blows hot - Chevrolet 2004 Silverado 1500 Crew Cab question Search Fixya Press enter to search. Cheap easy fix. Jul 10, 2020 · 2004 Silverado 1500 w/ Manual Driver/Passenger Climate Controls (See Picture for exact control) The Truck is having a random and intermittent issue where it starts blowing hot air. Jul 5, 2014 · Posted on Apr 16, 2010. heater does not blow hot air. The AC works fine but the heater only blows cool air. Chevrolet Master 11,573 Answers. Pressing the RECIRCULATION button will cancel the OUTSIDE AIR button. They followed the same stepssaid it was the actuator and replaced it. 3 v8 to go to work and my heat was working. If it is low you need to check for leaks or head gasket Aug 10, 2009 · Air conditioning intermittently stops working. Remove the trim. Low refrigerant. usually you replace the drivers side tempature actuator relearn the actuators and if it still acts up Jun 25, 2023 · A/C blowing hot air. Mar 21, 2015 · C. jpgss="h_mi">Turn the ignition switch to the OFF position. Leave the key on for at least 1 minute. Here is a photo of the location, it should be held in place by 3 small screws. Run it this way for a minute or more. If I turn the Suburban off for a couple of minutes then turn it back on, all the vents blow cold air. In the process of replacing the T-stat we flushed the whole system but not the heater core directly. Chevrolet Silverado 2500 HD Classic LT: Hi Gary. 0l, crew cab, long box replaced w flatbed. Jun 23, 2017 · It has dual climate control. After checking the fuses and the relay, I would suggest that you pick up a charging kit for about 25-30 bucks at your nearest dept. (984) 203-7709. with the automatic dual cligment control unit. the most common is the drivers tempature actuator is bad and will go to hot when its set to cold. The original battery gave up Friday and I replaced it Saturday. I got a 2004 Suburban that sometimes blows hot air out of the driver vents, while the rest of the vents blows cold air. Shut off the A/C-Heater for a couple of minutes and restart with normal temperatures and the A/C-Heater should be operating normally. Ask Your Own Chevy Question. I assumed this was a faulty blender door actuator but I wasn't sure which one it was bc my truck has 4, so I put a scanner in it and it showed B0423 actuator stuck. 0L extended cab, cab&chassis flatbed, upgraded to 4wd 2012 Silverado 3500 dually, 6. the one over trans hump circs between where the air blows[meaning your feet or whatever]. Chevy silverado. Dec 16, 2009 · the temp one mixes the air to be either hot or cold[also controls what driver feels],the one near pass side controls the defrost stuff[for the window,it is behind glove box]. No turning off or on still running. ChevyTech105. Determine if the blend door is moving. AC only blowing hot air. Jan 5, 2013 · A lot of times that air will stay in the heater core. Dec 13, 2009 · 1 answer. After two minutes, turn the vehicle on. 0 Silverado ac blows HOT on alternate sides of vehicle while in Auto A/C mode. Turn the ignition off. - mpen60 , Auburn, CA, US. I went to drive it later that night and it worked just fine Here is the crazy thing, it went through the normal problem and started blowing warm then I pulled into a parking garage so the outside temp dropped and the system started blowing cold again. Your truck’s HVAC system may struggle to maintain the desired temperature, which can result in uncomfortable temperatures inside the cabin. Low coolant level or air in the cooling system can cause the heater to stop working properly in Silverado 1500. Maximize. There are multiple forums dedicated to the same issue Dec 28, 2021 · This 2005 Chevy Silverado AC fluctuates from hot to cold and back. Turn the key off and put the fuse back in. These include a dirty cabin air filter, refrigerant leaks, a dirty or clogged condenser, a dirty or clogged evaporator, a malfunctioning blower motor, a defective compressor, a faulty blend door actuator, or any electrical system faults. Check the coolant level and the temp gauge on the dash. To reset your air conditioner, follow these steps: Turn off the vehicle. 0l, crew cab, long box Jul 27, 2023 · Let's look at the best option for an A/C reset on a Chevy Silverado. Jordan. May 27, 2011 · I've done some trouble shooting and discovered that the shutter door that diverts the hot and cold air is moving. Jun 23, 2015 · Step 1 – Recalibrate the HVAC. If you've noticed the control issues happening after disconnecting the battery or having repair work done, then the quickest fix is to recalibrate the HVAC. The guys at the dealer can easily replace the motor for you. Allow the self-positioning of theHeating system only blows out hot air through the - 0900c152801c9c8d. It was happening once in awhile, but lately it is happening almost daily. 0, blows cold air out the driver side and hot out of the passenger side, I was told the actuator is bad. It wont blow cool air & it wont blow AC air. May 4, 2012 · I bought a 04 Silverado, the manual dual climate was in there. Feb 6, 2022 · The blower motor is the central component of the air conditioning system in Chevy Silverado 1500, responsible for blowing hot or cold air through the AC vents. 0L extended cab, cab&chassis flatbed, upgraded to 4wd. The driver side actuator is located on the bottom of the air box right at the edge of the center hump on the passenger side. Check the system pressure. I've replaced the actuator and nothing happened. Turn the ignition key to run. Open the hood. Jul 26, 2016 · L Pfaff. I have pulle … read more Mar 26, 2022 · Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend door actuator, or a defect in the climate control unit. Dec 11, 2008 · The biggest problems have been with the actuators and /or a reprogram of the heater control moduel-you need a scanner to see what codes are set and also to see what the actuator postion counts are and what the actyuators limit counts are. When heat is built up inside of the heater core, the actuator door shifts to allow the hot air through the system, and when the climate control is turned to cool, the door flaps in the other direction closing off the heater core. The only way to get it to blow cold again is to shut it off, wait a few minutes and start it back. Mines was the driver side blowing heat while the passenger side got cold air. There are 2 a/c lines going in to the fire wall on the passengers side under the hood, feel these lines when the a/c blows hot. Vocational, Technical or Tra my 2003 Silverado 4. Soonest availability · Mon, Feb 5 at 11 am. 2004 Sierra 3500 dually, 6. The reason it will not blow heat is that there is no hot water in the heater core. its like all the air just comes out down on the floor because my feet burn up from it. turn key on and run air for 15 seconds. Generic pic included. Some had a proble, with the actuator wire chafing behind the glove box on the dash suport Apr 8, 2017 · My problem is that my truck blows hot air on the driver's side. 2:31. As summer heats up I am worried my little trick of turning the engine off/on to get the AC to start blowing cold again will eventually fail and i'll be stuck without. 0 Discussion starter. Has anyone else had this problem. Jun 9, 2009 · My 2004 Chevy Silverado air conditioner starting blowing hot air. BOOM! Cold air on both sides. You have dual zones that are controlled by temperature actuators the passenger side has lost its memory or has gone bad you can put it in self programming by disconnecting the battery for ten minutes then hook it back up start the truck turn the Jun 30, 2013 · 306 posts · Joined 2011. warmth comes from the heater in the car. I have a 2000 GMC Sierra, 5. Jun 19, 2015 · This article applies to the Chevrolet Silverado 1500 (1996-2006). If it is not low and the gauge reads in the middle it is not a thermostat. store or auto parts store. It has been doing this intermittently for more than a year. If they aren't, then either you have a massive air bubble, the water pump isn't working right, or there is a blockage somewhere. The heater would only keep it a little warm the other day but now only seems to be blowing cold air. 2 NHT - 2013 GMC Sierra SLT 6. Jun 11, 2011 · 8 posts · Joined 2005. #1 · May 14, 2010. diagnose and estimate repair. It started first with hot on right vents and cold on left vents, with no vent control. 14 posts · Joined 2015. I checked the fuses and they all seem fine. When AC is on the passenger side works well but hot air comes out of the drivers. Then turn off the truck, and disconnect the battery for 5 minutes. The lines should be almost ice cold. I even took the old actuator and put in a good spot and it worked so today I finally bit the bullet and took it to the dealer. May 11, 2011 · 2004 Chevrolet Silverado Crew Cab w/5. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty Dec 9, 2016 · Heater blowing cold air. Answered in 8 minutes by: Chevy Mechanic: Michael Moore. Sep 14, 2008 · 2004 Chevy Silverado 2500 HD manual dual ac, a/c blows cold on passenger side sometimes hot sometimes cold on drivers. 3L V8 with 200K miles and the air just started to act up. (ignore) 3. 2004 CHEVROLET SILVERADO. Insufficient amount of refrigerant in the AC system is one of the leading causes of AC not blowing cold air in Silverado 1500. Get the engine hot and feel the heater hoses, if they are only warm, the core needs to be flushed. 2 GAT. Suddenly hot air started blowing out the air vents only on the drivers Jul 31, 2020 · Learn how to fix the common problem of air only blowing out of the defrost or top vents on your Chevy Tahoe with this easy video tutorial. Top off as necessary and then check heater function again. Sep 6, 2010 · A/C blows cold and then hot but only on one side. They appear to e independent of each other as any combination of the 2 can occur. #1 · Jun 10, 2011. When I put it on windshield defrost, it was blowing cool air. By the time you get to the airbag it will have discharged itself. if it is climate control check the climate control module. Aug 5, 2014 · 16 posts · Joined 2014. ok usually its one of 2 things that will cause this. when I first start my truck, the a/c blows cold air. Think there is 3 or 4 screws you need to remove to get the shield off, then 1 screw for the Jun 30, 2022 · If they are hot, then you've got a problem inside the cab with an actuator/vent/head unit. It was coming out of the defroster and was blowing cold Vehicle blows hot air only on passenger side. It recently starting blowing hot air when the a/c is on but it only blows hot air on the drivers side. 😎If this video has be Jul 9, 2009 · The air conditioning on my 2004 Chevrolet silverado 2500 hd diesel quits working and begins blowing hot air. Air blows but no warmth. my truck doesn't ever run above 180-190. There is a eletrical motor called a temp actuatr that controls the temp for the hvac system, There is one for the passengers side and the drivers side. HMAC300. with truck off, move passenger to full hot and driver's to full cold. #26 · May 21, 2015. just not sure what to do or where to start. Restart the A/C with the driver's side on full cooling and the passenger's side on full heat. Wait 10 seconds. Unplug the HVAC fuse. … Feb 1, 2014 · 6 posts · Joined 2014. i can adjust the digital hvac to 90 degrees but it isnt anywhere near as hot as my buddy's 2500hd silverado. Dual climate control is. The 2004 Chevrolet Oct 4, 2011 · 3 posts · Joined 2011. OR the programing in the heater A/C controler needs to be updated. A lot of times it is the water pump leaking, but it could be anything. But didn't drive it until this morning. It has been fine since. Turn the ignition switch to the OFF position. Low coolant or air in the cooling system. all speeds work fine, an you can hear the blower motor an all. Adjust the mode actuator by completing the following steps: Connect the electrical connector to the actuator. First you should try to reset it by turning ac on and turning both dials all the way up to 90 and wait for it to get warm, should take 30 seconds and then turn them both back to 60. Find parts for your 2004 Chevrolet Silverado Check Price eBay. 5 lly silverado 2500hd lt as stated above, the heater will blow warm, but never actually gets hot. SOURCE: 2004 Chevy Silverado AC is blowing warm air on passenger side. Between HEATER and BLEND mode, outside air is forced to reduce window fogging. Protip: Venmo @Nicholas-Wellmerli Sep 1, 2020 · If you ac is working fine but blowing hot and could Oct 5, 2016 · The 2014 Chevrolet Silverado has many drivers hot under the collar because of continual problems with the truck’s air conditioning. Im in Canada so when set to hot its 32C and cool 15C. Locate the HVAC fuse (check the owner's manual). Once you get the air purged everything should work fine. 36 posts · Joined 2018. When I start out in the morning it works fine, but once I start and stop at lights, etc it quits working. To return to normal operation and to prevent stale air, be sure to return the OUTSIDE AIR. turn key off. Yup blend door actuator. Posted on Jul 26, 2016. This would lead me to believe that the climate control unit is faulty. Don't use those cans with little gauges. my a/c is freezing cold. You can get luke warm air on say the vent setting Oct 17, 2019 · AC HEATER BLOWS HOT ON DRIVER SIDE COLD ON PASSENGER SIDEIf the ac or heater is blowing hot on the driver side and cold on passenger side or blows cold on th Jun 27, 2016 · Turn the HVAC system off (turn the blower motor switch to off), and the radio off. Sep 15, 2009 · HelloCustomer this is typically either a problem with the actuator for the drivers side or a problem with the control unit. The cost of a new climate control is about $150. Changed everything (compressor, accumulator, condenser, pigtails) still nothing. floorboards aren't wet on the passenger side. The current idle produces a little more than 14 volts. It is on the bottom of the dash towards the driver's side. 4. 3. 2004 Chevy Silverado V8 Four Wheel Drive Automatic. If problem persists, have a shop check for a plugged/clogged heater core, air in the cooling system, a faulty thermostat or waterpump. Choose among the best repair shops in the country - those that meet only the highest Chevy Mechanic: Gary. you can operate the actuators with the dash panel AS LONG Blowing hot or cold air inconsistently. Jun 17, 2011 · My 2004 Chevrolet Silverado 2500hd crew cab with dual climate control and has a 6. Jul 16, 2009 · 2004 2500 6. Dec 4, 2023 · Several factors can impede the proper functioning of the air conditioning system in your Chevy Silverado 1500. The actuator is located under the dash between the manual heat/cold slide and glove box. Turn the ignition switch to the RUN position. Military Discount. #9 · May 8, 2016. A/C works fine. Aug 7, 2013 · Answered. IE: both working, neither working, blower working cooling not and finally blower not working and cooler working. 2009 GMC Yukon XL SLT 5. The 2004 Chevrolet Oct 15, 2012 · Heater Blowing Cool air. Yeah, the connector gm used are just barely good enough to work, and over time they wind up failing. Closed · Opens 7 AM Mon. We just replaced the thermostat and it still doesn't work right. Jun 14, 2016 · 2004 Chevrolet Tahoe Blows Hot Air. If your coolant is low you may have a air pocket due to coolant loss. I have a 2007 … Jun 15, 2022 · If you ever need to replace an actuator, use GM OE only. Aug 8, 2013 · 1. 1. Tighten the two 7/32 bolts to the actuator. Jul 20, 2009 · Once the new actuator is in: Turn the temp control all the way to cold. 2. ,and the one under the dash on pass side controls the pass side temp. 8 has a problem with the AC. Aug 12, 2021 · In most Silverado, the biggest culprit for this problem is often a faulty fan motor. CRAZY! S*** blows cold when cold and hot when hot. May 21, 2023 · 8965 posts · Joined 2015. If I stop and turn off the engine it starts working again. check for heater control in the vent settings as the hot water tap may not be turning on. #1 · Aug 5, 2014. Pull the HVAC 1 fuse (panel on the drivers side of the dash, top front fuse). The only way to correct it was to turn the car off and back on and then it would immediately start blowing cold again. 2012 Silverado 3500 dually, 6. If the cooling system is not full and bled properly, the water pump will not be able to push the coolant around the system efficiently. Posted by dempsey113 on Nov 25, 2010. but after its been on for a few mins and I'm driving up the road, the drivers side starts blowing hot air, while the passenger side remains cold. Find and fix the leak. At this point, listen closely - and you should hear the actuators cycling over and over again. So 330 this morning I got in my 2000 silverado 1500 5. Tried disconnecting. Aug 21, 2015 · Our problem with the heating being stuck on High was intermittent but was a total pain. Aug 3, 2013 · This is actually a blend door actuator that controls the drivers side climate control. 58 mi) 36k Warranty. Do this about 3 times and it should reset it. You need to remove the insulator panel and you will see it. l disclaimer: Terrible video footage. It is afternoon now and heat is available at idle even though water temp is down to 190. Reconnect the battery, then turn the ignition on, but do not start. Often Dec 28, 2014 · HOW TO FIX / REPAIR HEATER OR AC THATS' ONLY BLOWING ON THE PASSENGER SIDE OF A GM GMC SIERRA YUKON CHEVY TAHOE SILVERADO SUBURBAN 2003 2004 2005 2006 2007 B May 14, 2010 · 14 posts · Joined 2010. Disconnect the wiring harness. Feb 22, 2011 · Check to make sure your coolant level is at the proper level. Make sure the key is off. Then I just set the seat back to the way I Answered in 8 minutes by: Chevy Mechanic: Michael Moore. I have a 2001 Silverado 1500 with the 4. some vehicles use a mechanical valve to turn the coolant flow on and off to the heater core). You will have to remove the insulator panel from the bottom of the HVAC case to see it. Sparky September 8, 2009 A/C, Chevrolet and GMC Trucks, Heater. 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. 3 K5L - 2012 GMC Sierra SLT 6. If it’s low, you’ll need to charge it and find out where the leak came originated. The heating system in Silverado 1500 uses hot coolant Scotty Kilmer, mechanic for the last 45 years, shows how to fix a car that is blowing really hot air, even though the AC system is turned on full cold. blows cold air for front defog and cold air blows when temp cranked high 1-5. Insert the actuator into place. Have a 2004 LLY. The other day my ac stopped working while the truck was just sitting there idling away, and would not turn back on either. It may reset after a minute if not the actuator may not be working. Jan 7, 2014 · When the correct temperature is not being output on one side of the vehicle, this is most commonly due to a faulty Air Temp Actuator. Dec 26, 2012 · If one is cool and one is hot then you have an obstructed heater core (or a bad heater core valve, if it has one. #1 · Apr 22, 2019. Sep 25, 2012 · 2004. Pulled motor out and turned door bye hand Nov 25, 2010 · My 2004 silverado will not blow hot heater air, the volume of air is also much less when on the heater setting. #10 · May 23, 2023. Jan 5, 2017 · Search instructables. Is this a bad control unit? … read more Jul 31, 2020 · 2002 Chevy trailblazer LT. 00. When it shifted to hot the customer could not get it to turn back cold. . Apr 23, 2019 · 04SS6. The Actuator is located behind the driver's side/center dash (just above and to the right Aug 22, 2019 · How to fix air that only blows through defrost vent. When driving highway speeds it seems to never quit. The A/C on my 2005 silverado has the nasty habit blowing enjoyable cool air most of the time when it all of a sudden blow scaling hot air from the driver's side vents. 04 Silverado AC intermittently cools and intermittently blows. It may be cutting off if both all vents are going hot. When the AC is on, park, pop the hood, and listen to the AC compressor. Check freon level first it may be low if compressor is running then check actuator in heater as one controls temp, remove hvac fuse for 60 seconds then reinstall with key on. It may go for days and not have this problem or it may repeatedly do this in one small trip around town. Passenger side temperature blend door replacement required to repair. I'm having a problem with the HVAC system. Aug 31, 2012 · Posted on Jun 03, 2009. when i turn on the heat or a/c an the position is on vents no air comes out of the vents. move climate controls to opposite positions and turn key on again with air on. #5 · Mar 23, 2015. Jan 23, 2013 · 9 posts · Joined 2015. Start the truck "2005 Z71" and hit the #1 seat positioning setting on the door. I would pressure check the cooling system and locate the leak. I have a 2004 Silverado 4x4 with duel temp controls. Then use a vacuum pump to completely evacuate the system and use a manifold to properly introduce the exact amount to the system. 3 L Dual climate zone control unit blows cold ac on passenger side and hot air on driver side and rear When the A/C is on. #8 · Oct 19, 2011. Douglass, Your A/C may have lost it's programming, blend door actuator could be faulty or A/C could be low on refrigerant. Plug the HVAC fuse back in. Then blower went out, replace it, Then a week later, doors got stuck. Check the attached links,instruction and guides, Good luck. It still blows air, it's just hot atmospheric air. When I got to a place where I could stop, I turned it off, then started the engine again and it blew cold air again. Remove the RADIO fuse for 10 seconds and then reinstall the fuse. . jq qr kj jo ic jp mj qz ej lg