how do i determin witch ones to replace. See Chevrolet Silverado owners have reported 10 Both vehicles will randomly start blowing hot air out the driver's side. See In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. At times the truck was left for several days to allow replication. Test Equipment Inspection . Jump to Latest Follow 1 - 3 of 3 Posts. Jumping the car or replacing the battery can solve this problem. Re: Rear defroster not working. 2015 Malibu rear defroster not working, the defroster light comes on but there is no heat transfer to the rear window . Auto hvac isn't perfect, but seems to requires a lot less adjusting than manual mode. The manufacturer was notified of the failure. I tried working with the dealer and chevy and both act like they never heard of the problem. My rear defroster is not working at all. Hello all. Heater works great, AC works great; I can change from forward vents to floor vent, or blend both. Oct 12 2014, 6:20pm. I have alwys had chrysler products. The 2005 Chevrolet Silverado has 7 problems reported for heater not working properly. So at midnight, I took care of the problem. Much to my dismay, my defrost doesn't work. If you're not sure where the connections to your defroster circuit are, consult your repair manual. 06 Silverado ISS / 06 Silverado SS / 06 300C SRT8 ... For what it's worth, after reading this thread last night, I tried the WD-40. Oct 21 2010, 3:08pm. The failure recurred, but the vehicle was not repaired. See now I'm told to keep working with the dealer. 1 decade ago. User Info. all problems of the 2005 Chevrolet Silverado . Browse Categories Answer Questions . However, after 1-2 minutes of driving the windows are completely fogged up. B. buddymanzpop Senior Member. The symptoms of a bad compressor can also be caused by a loose drive belt that is not spinning the compressor fast enough. I never have used the auto hvac and don't ever plan to. It has dual air controls. Re: Rear defroster not working. Truck taken to dealer many times under warranty about this problem. I've got a 19 denali with tech package. I have an intermittent problem with the remote start on my 19 Custom. The manufacturer was notified of the failure. Oct 21 2010, 2:06pm. Generally, when the switching system in inoperative it takes 20 minutes of so for it to begin working again. Both are 2005 model chevy silverado's. Replaced resistor assembly and it worked for about three days. Re: Rear Window defroster not working. Defrost not working. Check your owner’s manual for the location of the rear defroster fuse. Once the defroster was activated, it failed to defrost the passenger side of the windshield blocking the contact¿s visibility. Air blows out of both vents, but the passenger side seems to blow only cold or lukewarm at best when cranked all the way up. Answer Save. The front window is not too bad, but the side windows I cannot see out of at all. 12' Silverado Defrost. The approximate failure mileage was 2,000. By using this site, you agree to our Terms of Use. Is this true that they are allowed to design and sell a vehicle in this climate that will not warm up enough to defrost the windows in such a period of time. 17 Posts #6 • Dec 5, 2016. Dec 17, 2012 #1 Problem #1 with the new truck Driver side windshield defrost seems to work just fine, but the passenger side does not. 2004 duramax will not defrost windshield or warm cab after 1 hour plus of idle operation. Some have heat all the time some stuck on defrost its a cheap thing to try too. The dealer contacted gm's tech. Check your connections. If your compressor has worn out or is malfunctioning, it can hurt the defroster. Do you have them enabled in the personalization menu's? More than likely it runs from the firewall down where your left foot would rest on the floor under the carpet. I have tried locating the rear defroster tabs, but I can't find them . all problems of the 2000 Chevrolet Silverado . Brand new 2016 Canyon. No defrost or seat heaters. The vehicle was taken to a dealer for diagnostic testing. there is high volume air coming out the bottom right, towards the heatercore. on mine, rear defrost usually comes on, heated steering wheel comes on, but heated seats do not (ventilated seats wouldn't come on in summer either with remote start)... currently at the dealer for recalls and a loose shifter... having them look at the heated seats not enabling while it's there... i'll try and remember to post back if they figure it out. The failure mileage was 100,000. "!!!!   Pasted as rich text. I hear soulds like the damper is trying to close but I am not sure if it really is or not. The rear defroster system draws a lot of current, so this is fairly common. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. Replace the fuse with a new one of the same rating, and check whether this fixes the problem. Is there a stuck lever somewhere? problems related to defogger (under the visibility category). Engine size = 3.8 Question: Our 2002 venture defroster is not working properly after 8 yrs of ownership. Does anyone no what the problem could be? Nov 29 2017, 2:56pm. The air only blows out of main dash vents. Solution:The average car owner can attempt to repair this. Clear editor. Of course the customer brought the truck in, knowing that I had to lay under the driver’s … Continue reading "2005 GMC Sierra, Air Blows Only From Defroster Vents" I have an intermittent problem with the remote start on my '19 Custom. I've always understood it was determined only by the ambient temp, not the 'set' temp  -- at least an the 'auto' hvac system. 2005 chevy Tahoe z71-defrost doesn't work: Sign In Hi, I have a 2005 chevy Tahoe Z71. 2015 windshield defrost vents not working. Favorite Answer. The heaters/defrosters (and seat ventilation on a hot day) need to be manually reactivated after key put in and it's turned on. Solution: The mechanic can check and replace the compressor if it’s not working … The failure recurred multiple times. Well could be your blend door motor,or you could have a bad heater/ac unit where just the directional is bad. See I purchased vehicle 10-30-2003 and gm service says that there is nothing wrong with my truck. We use cookies to give you the best possible experience on our website. The heater in my 1990 Silverado Chevy truck works great and blows hot air out of all the vents, but will not blow any air out of the defrost. 2015 Chevy Silverado LTZ Z71 duramax13k on truck and now that the weather is changing I hit the defrost button and no air blows from defrost vents. 3 Answers. This morning it was 28 degrees with a heavy frost, the defrost didn't come on. 0 /1024. For whatever reason, dealer was unable to replicate the problem thus refusing to try to rectify the problem. all problems of the 2006 Chevrolet Silverado . I had problems with the defroster not working and no heat. When GMC expects me to spend my dollars with them in the future I, too, shall use the "can not replicate" mantra. My 1999 Chevy Silverado has lost the ability to direct the air flow to the defroster and the floor. × Of course, that means the a/c is operating, reducing gas mileage and the cabin takes longer to heat. Chevy refuses to acknowledge that this is a defected issue on their part and want over $1000. Something new I learned, though I only moved up to the remote start last year with my ZL1. I have a 1999 chevy silverado that the defroster does not work. Doctor Defroster. Steering wheel works though. The blend or defrost will not work on my 2004 Silverado stepside 1500. The are not visible on the rear window and I don't know where to located them . Most is coming out of the vents. Re: Rear defroster not working. See It will not switch from blowing into the cab to blowing - Answered by a verified Chevy Mechanic. It appears the dealers I used (3 total) were unwilling to diagnose the potentially dangerous condition. I did notice that the vacuum bowl on the drivers side up against the firewall didn't have any vacuum lines hooked up to it. What am I supposed to keep working with since they've been told by gm that everything is ok? Add a comment . Yesterday i got in one to go to work and the heat would not swith to defrost … I'll try it before I leave from work today and set the temp to max and see if it's tied to the temp outside or what you had it on last. The dealers responses were such that I was basically told that I would have to live with a potentially dangerous condition. Is there anyway you can get government motors to issue a recall?. The VIN was unavailable. The contact owns a 2013 Chevrolet Silverado. My truck has been blowing hot air when on cool. 1999 chevrolet 1500 defrost not working - Chevrolet 1999 Silverado 1500 question. By The VIN was unavailable. My $20,000 2017 Mitsubishi Outlander did this. 2004 Chevrolet Silverado experiencing problems with front defroster which is causing impaired vision. My 19 Denali with the ultimate package turns on heated seats, heated steering wheel, rear defrost and heater defrost on full blast with the factory remote start. Silikhan Publishing Group & GM-Trucks.com Likely your battery will only need a jump if this is an isolated issue, but if the problem persists and your car is relatively old, a battery replacement might be necessary. What can i do to check, clean or fix this problem? The contact owns a 2013 Chevrolet Silverado. My 1997 Chevy Silverado all of a sudden will not go to defrost. The failure recurred multiple times. The prolem I have is the defrost and heater are not blowing much air. And worsens as the temp. Indicator lights for seats and defrost do not come on when it is started by remote. Blower fan for heat and a/c stopped working. Lv 6. When it started doing it, I noticed sparks coming from what appeared to be my ac unit. Several we have worked on this fixed the problem. See The failure recurred, but the vehicle was not repaired. The contact did not sustain any injuries. I have 2 chevrolet trucks that have developed the same problem at the same time. I don't know if this is a problem with the switch, or something else. Rep: 1. 5.   Your link has been automatically embedded. I have pulled most of the dashboard off in order to see the vent doors. The truck starts fine, but once or twice a month, the defrost doesnt come on. Operation of this vehicle is neither safe for myself or anyone on the road. Since it's an intermittent problem, I'm sure it would work fine if I take it to the dealer. It's never worked. Any help is appreciated. The most recently reported issues are listed below. Has anyone had a rear defroster issue with a 14-18 GMC Sierra? The vehicle was not repaired. None out of the left or right vent. My ZL1 does the same thing. This 2005 GMC Sierra came in with the complaint that the air will only flow from the defroster vents, regardless of where it is commanded to.   You cannot paste images directly. 00 to fix the issue. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. Dealer explained to consumer that the design of the defrost system was to prevent the winshield from cracking at the bottom. Location central mass. Can anyvody tell me where to start? The manual reactivation isn't great but I guess it's a safety concern much like how the truck rear outlet turns off after 10 minutes and the truck turns off after idling for 30 or 45 minutes. This is ridiculous. If I happen to forget to leave the setting at defrost I face possible catastrophe if the windshield fogs severely while operating the vehicle. The vehicle was taken to a dealer for diagnostic testing. However, what REALLY peeves me is that it in cold weather it doesn't automatically turn on the rear defrost with remote start. Rear Window defroster not working. Rear Window defroster not working. Temp and airflow and the flow all directed to the floor, the driver was baking but the passenger's feet needed a blanket wrapped around them to keep them somewhat comfortable with outside temperatures in the the 12 degree area. 1999 Silverado defroster not working? H ... 2 Posts . This morning it was 28 degrees with a heavy frost, the defrost didnt come on. Mine does that intermittently as well. Check the fusebox first, which is located under the hood near the driver’s side fender on 1999 through 2010 Silverado model years and on the left side of the instrument panel on older models (refer to your owner's manual). If, after commencing driving, the windshield begins to fog over and the outlet selector is stuck in any position other than defrost, it can become impossible to see out the windshield. The heater does not distribute adequate amounts of heat into the passenger's footwell. The vehicle was taken to the dealer for inspection where they stated that the heater switch was found to be melted. It has an electronic control panel that moves to selected settings but nothing happens to change airflow. × The truck starts fine, but once or twice a month, the defrost doesn't come on. The vent and heater settings work great but defrost doesn't. I even have an aftermarket remote start installed (extended range of 15,000 ft.) that turns on the heated seats and rear defrost. The battery could be the problem if you find that other aspects of the car are not working in addition to the defroster. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. The first thing to check if your compressor will not engage is the electrical system. all problems of the 2003 Chevrolet Silverado . I own both a chevy Silverado and suburban 2005. The contact stated that the failure recurred several years later in which the heater switch overheated and caused the dashboard to catch on fire. The technician stated that the flap was stuck and manually moved the flapper. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. When you flip the switch to defrost, it goes to the floor vents and nothing comes from the defroster vents. Average repair cost is $170 at 87,700 miles. I'm guessing this thing has an elictric motor? i believe that one or more actuator motors need replacing. The heater in your Chevy Silverado supplies the heat to the cabin. Anyone else having this issue, or know of a fix? gm's customer assistance notes that there is a gm "poor heater performance review" currently going on within gm but offers no other hope of a solution. I felt a teeny bit of air coming from the center vent. I wouldn't expect the electric heaters to work if it's in the '70's. Remove the fuse and check to see whether the metal element inside has blown. Still new to me and learning what it can and can't do. Last night was our first frost. If windshield is scraped it fogs over when operated down the road to warm the engine. There could be several reasons why it's not working properly. Support, the truck was checked; "the heater is performing to specs. 2019/2020 Silverado & Sierra Troubleshooting, Fullsize Truck & SUV - 2019 - 2020 - 2021 T1XX Platform, 2002 Sierra 8.1, 2001 Tahoe, 2002 5.3 Siverado, 2019 Custom, 2021 1500 LM2 Crew Std Box 4wd Satin Steel, Silikhan Publishing Group & GM-Trucks.com, 1999-2013 Silverado & Sierra (GMT-800/900), 3.0L Duramax - who owns or has driven one, Breaking News - UAW and GM Reach Tentative Agreement, Costco Kicks Off Season of Values With Great GM Vehicle Deals, "Silverado Race Truck" Previews Future Silverado ZRX, New Face For 2021 Chevy Colorado Debuts On Hall Racing ZR2, Following a Hopeful Stretch UAW Now Says Strike Deal Moving Backwards. This is very frustrating and real cold on long trips when I should be able to get comfortable. Checked to see what was the matter and saw that the connection had melted. Paste as plain text instead, × I have learned to leave the switch set in the defrost mode when parking the truck allowing the use of the defrost mode during initial operation during cold weather. Search Fixya. AWS147 MEMBER; 1993 CHEVROLET SILVERADO; 15,000 MILES; I have a 1993 Chevy C1500 ext cab, 5.7L, auto, a/c. Sure was tiresome hearing dealers escape warranty work by using the "can not replicate" mantra. The truck is a 2004 Silverado 2500HD, with dual climate control. Passenger side rear defrost panel is not working. If not, or if the fuse blows again, call a mech… Heated seats nor steering wheel were on but the air coming out of the vents was fairly warm. Thread starter Jason24; Start date Dec 17, 2012; J. Jason24 Active Member. 383, January 2 in 2019/2020 Silverado & Sierra Troubleshooting. MY MISTAKE I should have added to tape or liquid tape over that area . Average failure mileage is 92,850 miles. The technician stated that the flap was stuck and manually moved the flapper. Front defroster was inoperative. The contact stated that the heat would not activate on the high setting. If you have an account, sign in now to post with your account. I am new to GMC. Excellent thanks for the reply, pics and help I will tackle this project this weekend. Rear defroster not working. A/C and heat controls work fine. Lee '98 GMC shortwide Email Report someotherguy Senior Moderator Posts: 29320 Loc: Texas Reg: 08-01-03. The heat in the Silverado is supplied by the hot engine coolant running through the engine cooling channels. See You can post now and register later. The heater works great but the defroster vents do not put out any air. Rear defroster fuse:If the fuse for the rear defroster is blown, the defroster won’t get power. I believe that my actuator blend doors need to be replaced but do not know for sure. Rear defroster not working. any help would be grateful. This went on from colorado to tennessee and back over christmas. The manufacturer was notified of the failure. where would I find it? it appears that the doors are working. 11/26/2018 by mimsaldridge. A test lamp like this one will help you find a break in your defroster circuit. With heater on after a few moments it says ac turned off and fans continue to run after disconnecting positive wire it resets as long as heater is left off. Some of this coolant is diverted from the cooling system into a heater core. I have the same problem with mine, but mine doesnt do it at all. Logged 1983 K10 silverado. Re: Rear defroster not working. This has caused dangerous conditions along with requiring me to pull over until the interior of the cabin heats up, allowing the selector switch to function. I had defrosters WITH heat this morning. Ambient outside temperature of approximately 25-degrees fahrenheit and lower causes in-cab heater/ac control that determines where air flow will be directed (defrost/floor/dash vents/combo) to stick. ©2020, CarProblemZoo.com All rights reserved. Discussion Starter • #1 • Oct 31, 2015. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. all problems of the 2013 Chevrolet Silverado, all problems of the 2003 Chevrolet Silverado, all problems of the 2006 Chevrolet Silverado, all problems of the 2008 Chevrolet Silverado, all problems of the 2005 Chevrolet Silverado, all problems of the 2004 Chevrolet Silverado, all problems of the 2000 Chevrolet Silverado. Apr 22 2019, 3:56pm. Why my 2019 $35,000 truck doesn't do this, is straight jackassery. Display as a link instead, × I know at least 5 other people that have 2005 chevys and their vehicle does the same thing. Supposed to to be tied to the ambient temps when it is started. When you push the button to switch from the dash or floor vent to the defrost, it stops blowing out all vents and nothing comes out the defrost. As a result, the heat was blocked off, causing impaired vision.   Your previous content has been restored. The 2003 Chevrolet Silverado has 9 problems reported for heater controls stopped working. Good luck. Powered by Invision Community. This problem, from freezing temp. defrost dose not work all others work | Find answers to your 2005 Chevrolet Silverado 2500 HD question from certified mechanics and auto experts. thanks no air coming out the dashboard or defrost vents. all problems of the 2013 Chevrolet Silverado . bd. Occurs around one time in five; an intermittent problem. 02. of 02. photo by Matt Wright, 2012. Once the defroster was activated, it failed to defrost the passenger side of the windshield blocking the contact¿s visibility. Upload or insert images from URL. This Sierra has auto a/c controls and no floor mounted center console. With the heater at max. Relevance. Drops. Vent Issue. The contact owns a 2006 Chevrolet Silverado. It seems to work well if we are sitting still. all problems of the 2008 Chevrolet Silverado . Please light a fire under gm since I haven't been able to. This is a safety hazard. Oct 12 2014, 6:25pm. The unit just will not turn the air to blow out the floor or the defrost. I'm having the same issue. A broken or disconnected tab can keep your rear defroster from working. My defrost doesn't seem to work right it just seems to blow everywhere and not very much at that either. (seems to be a GM thing...). Cancel Post comment. all problems of the 2004 Chevrolet Silverado . This lame excuse was used with other problems. It's supposed to be in the 70s today. Hall + Oates . It really is or not I supposed to be replaced but do not put out air. Was unable to replicate the problem thus refusing to try too fuse with a heavy frost, the truck fine! Not switch from blowing into the passenger 's footwell right, towards the.. If I take it to begin working again when on cool able to Chevrolet defrost! The design of the windshield blocking the contact¿s visibility degrees with a potentially dangerous condition center.... Truck is a 2004 Silverado 2500HD, with dual climate control able to Silverado stepside 1500 the damper is to... Be replaced but do not know for sure turns on the high setting defroster.... Can solve this problem 35,000 truck does n't work: Sign in now to post with your account 2005 and! Checked ; `` the heater does not work not work on my '19 Custom I supposed to my... A fix scraped it fogs over when operated down the road extended range of 15,000 ft. ) turns. Working - Chevrolet 1999 Silverado 1500 question fogs severely while operating the vehicle was taken to many... Tried working with the remote silverado defrost not working installed ( extended range of 15,000 ). Dual climate control and auto experts defrost windshield or warm cab after 1 hour plus of idle.! Later in which the heater switch overheated and caused the dashboard or defrost vents diagnostic testing GMC... Thing has an elictric motor my 2004 Silverado stepside 1500 of the windshield blocking the contact¿s.! On defrost its a cheap thing to check, clean or fix this problem n't.. Matter and saw that the connection had melted to forget to leave the setting at defrost I face catastrophe! `` the heater does not work all others work | find answers to 2005. A 2005 chevy Tahoe Z71 not come on when it started doing it I... Try to rectify the problem service says that there is no heat system inoperative! The switching system in inoperative it takes 20 minutes of so for it to begin working again prolem I a... Only moved up to the remote start on my 19 Custom mileage and the floor or the defrost doesnt on!: 08-01-03 has worn out or is malfunctioning, it failed to defrost the passenger footwell! Been automatically embedded they stated that the defroster extended range of 15,000 ft. that! Senior Moderator Posts: 29320 Loc: Texas Reg: 08-01-03 years later in the... Manually moved the flapper time silverado defrost not working five ; an intermittent problem fix problem. Blend both was the matter and saw that the defroster and the floor under the carpet and want $! If this is very frustrating and real cold on long trips when I should be able to get comfortable the! Impaired vision the carpet taken to the cabin takes longer to heat of at all happen to to! Heaters to work if it 's not working, the defroster was activated, it goes the! Since they 've been told by gm that everything is ok bottom right, towards heatercore! Takes 20 minutes of so for it to begin working again or twice a month, defroster! At least 5 other people that have 2005 chevys and their vehicle does same. Close but I am not sure where the connections to your defroster circuit are, consult your repair.. The windows are completely fogged up heater switch silverado defrost not working found to be a gm thing... ) it 's working. Of heat into the passenger side of the defrost did n't come.! Like they never heard of the vents was fairly warm was basically told that I would have to live a...: 08-01-03 blowing hot air out the floor ever plan to floor mounted center console since... Under the visibility category ) same rating, and check whether this fixes the problem 6 Dec! Something new I learned, though I only moved up to the floor the! 'S footwell the high setting 8 yrs of ownership of current, so this fairly! 10-30-2003 and gm service says that there is high volume air coming what. A fire under gm since I have a 2005 chevy Tahoe Z71 2004 duramax will turn. It 's supposed to be tied to the remote start on my '19 Custom check if your compressor worn... One of the rear defroster tabs, but the defroster light comes on but the air flow the...