Anyone else having this issue, or know of a fix? This went on from colorado to tennessee and back over christmas. Much to my dismay, my defrost doesn't work. 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. Apr 22 2019, 3:56pm. The failure mileage was 100,000. My 1999 Chevy Silverado has lost the ability to direct the air flow to the defroster and the floor. This Sierra has auto a/c controls and no floor mounted center console. This lame excuse was used with other problems. H ... 2 Posts . Hall + Oates . Average repair cost is $170 at 87,700 miles. 00 to fix the issue. I have alwys had chrysler products. By The heater does not distribute adequate amounts of heat into the passenger's footwell. Indicator lights for seats and defrost do not come on when it is started by remote. This morning it was 28 degrees with a heavy frost, the defrost didn't come on. Cancel Post comment. all problems of the 2004 Chevrolet Silverado . Clear editor. At times the truck was left for several days to allow replication. Generally, when the switching system in inoperative it takes 20 minutes of so for it to begin working again. Support, the truck was checked; "the heater is performing to specs. See Passenger side rear defrost panel is not working. all problems of the 2000 Chevrolet Silverado . Well could be your blend door motor,or you could have a bad heater/ac unit where just the directional is bad.   You cannot paste images directly. The battery could be the problem if you find that other aspects of the car are not working in addition to the defroster. Rep: 1. See Re: Rear defroster not working. Steering wheel works though. Oct 21 2010, 2:06pm. My $20,000 2017 Mitsubishi Outlander did this. The truck starts fine, but once or twice a month, the defrost doesn't come on. More than likely it runs from the firewall down where your left foot would rest on the floor under the carpet. Checked to see what was the matter and saw that the connection had melted. Heater works great, AC works great; I can change from forward vents to floor vent, or blend both. B. buddymanzpop Senior Member. The prolem I have is the defrost and heater are not blowing much air. now I'm told to keep working with the dealer. 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. Solution:The average car owner can attempt to repair this. A test lamp like this one will help you find a break in your defroster circuit. I wouldn't expect the electric heaters to work if it's in the '70's. We use cookies to give you the best possible experience on our website. Why my 2019 $35,000 truck doesn't do this, is straight jackassery. I know at least 5 other people that have 2005 chevys and their vehicle does the same thing. Test Equipment Inspection . I tried working with the dealer and chevy and both act like they never heard of the problem. 12' Silverado Defrost. I hear soulds like the damper is trying to close but I am not sure if it really is or not. However, what REALLY peeves me is that it in cold weather it doesn't automatically turn on the rear defrost with remote start. Add a comment . 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. It appears the dealers I used (3 total) were unwilling to diagnose the potentially dangerous condition. The heater works great but the defroster vents do not put out any air. The failure recurred, but the vehicle was not repaired. Good luck. Defrost not working. The manufacturer was notified of the failure. If your compressor has worn out or is malfunctioning, it can hurt the defroster. 2005 chevy Tahoe z71-defrost doesn't work: Sign In Hi, I have a 2005 chevy Tahoe Z71. A broken or disconnected tab can keep your rear defroster from working. No defrost or seat heaters. The most recently reported issues are listed below. ©2020, CarProblemZoo.com All rights reserved. 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. Logged 1983 K10 silverado. When you flip the switch to defrost, it goes to the floor vents and nothing comes from the defroster vents.   Pasted as rich text. Operation of this vehicle is neither safe for myself or anyone on the road. This problem, from freezing temp. Oct 12 2014, 6:20pm. It seems to work well if we are sitting still. I felt a teeny bit of air coming from the center vent. Silikhan Publishing Group & GM-Trucks.com (seems to be a GM thing...). 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. how do i determin witch ones to replace. 17 Posts #6 • Dec 5, 2016. I don't know if this is a problem with the switch, or something else. Remove the fuse and check to see whether the metal element inside has blown. It will not switch from blowing into the cab to blowing - Answered by a verified Chevy Mechanic. My truck has been blowing hot air when on cool. The vehicle was not repaired. Blower fan for heat and a/c stopped working. Paste as plain text instead, × See Re: Rear Window defroster not working. 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 you're not sure where the connections to your defroster circuit are, consult your repair manual. If I happen to forget to leave the setting at defrost I face possible catastrophe if the windshield fogs severely while operating the vehicle. My ZL1 does the same thing. 2004 Chevrolet Silverado experiencing problems with front defroster which is causing impaired vision. I own both a chevy Silverado and suburban 2005. The vehicle was taken to a dealer for diagnostic testing. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. My 1997 Chevy Silverado all of a sudden will not go to defrost. Average failure mileage is 92,850 miles. 5. This is a safety hazard. I am new to GMC. The contact stated that the heat would not activate on the high setting. Relevance. Does anyone no what the problem could be? If not, or if the fuse blows again, call a mech… 3 Answers. Occurs around one time in five; an intermittent problem. 383, January 2 in 2019/2020 Silverado & Sierra Troubleshooting. The are not visible on the rear window and I don't know where to located them . Yesterday i got in one to go to work and the heat would not swith to defrost … 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. Hello all. Once the defroster was activated, it failed to defrost the passenger side of the windshield blocking the contact¿s visibility. The rear defroster system draws a lot of current, so this is fairly common. The contact owns a 2013 Chevrolet Silverado. × bd. What am I supposed to keep working with since they've been told by gm that everything is ok? The air only blows out of main dash vents. Oct 12 2014, 6:25pm. Lee '98 GMC shortwide Email Report someotherguy Senior Moderator Posts: 29320 Loc: Texas Reg: 08-01-03. photo by Matt Wright, 2012. I have 2 chevrolet trucks that have developed the same problem at the same time. 2015 windshield defrost vents not working. Rear Window defroster not working. Oct 21 2010, 3:08pm. I purchased vehicle 10-30-2003 and gm service says that there is nothing wrong with my truck. Favorite Answer. I never have used the auto hvac and don't ever plan to. 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. thanks A/C and heat controls work fine. Do you have them enabled in the personalization menu's? Display as a link instead, × The front window is not too bad, but the side windows I cannot see out of at all. Answer Save. 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. 2015 Malibu rear defroster not working, the defroster light comes on but there is no heat transfer to the rear window . Chevy Truck Forum | Silverado Sierra GMC Truck Forums. Engine size = 3.8 Question: Our 2002 venture defroster is not working properly after 8 yrs of ownership. It has dual air controls. I've always understood it was determined only by the ambient temp, not the 'set' temp  -- at least an the 'auto' hvac system. all problems of the 2003 Chevrolet Silverado . Truck taken to dealer many times under warranty about this problem. Rear defroster not working. 02. of 02. 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. The failure recurred, but the vehicle was not repaired. Re: Rear defroster not working. See The technician stated that the flap was stuck and manually moved the flapper. all problems of the 2013 Chevrolet Silverado . 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" The vent and heater settings work great but defrost doesn't. 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. Dealer explained to consumer that the design of the defrost system was to prevent the winshield from cracking at the bottom. Front defroster was inoperative. I had defrosters WITH heat this morning. all problems of the 2006 Chevrolet Silverado . AWS147 MEMBER; 1993 CHEVROLET SILVERADO; 15,000 MILES; I have a 1993 Chevy C1500 ext cab, 5.7L, auto, a/c. 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. However, after 1-2 minutes of driving the windows are completely fogged up. See Last night was our first frost. With the heater at max. And worsens as the temp. 1999 chevrolet 1500 defrost not working - Chevrolet 1999 Silverado 1500 question. The first thing to check if your compressor will not engage is the electrical system. 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. 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. I have an intermittent problem with the remote start on my 19 Custom. Discussion Starter • #1 • Oct 31, 2015. I believe that my actuator blend doors need to be replaced but do not know for sure. Once the defroster was activated, it failed to defrost the passenger side of the windshield blocking the contact¿s visibility. Several we have worked on this fixed the problem. The vehicle was taken to a dealer for diagnostic testing. The manufacturer was notified of the failure. None out of the left or right vent. Replaced resistor assembly and it worked for about three days. The VIN was unavailable. For whatever reason, dealer was unable to replicate the problem thus refusing to try to rectify the problem. 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. If windshield is scraped it fogs over when operated down the road to warm the engine. If you have an account, sign in now to post with your account. Excellent thanks for the reply, pics and help I will tackle this project this weekend. 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. Search Fixya. Still new to me and learning what it can and can't do. 11/26/2018 by mimsaldridge. "!!!! Jump to Latest Follow 1 - 3 of 3 Posts. any help would be grateful. Jumping the car or replacing the battery can solve this problem. The heaters/defrosters (and seat ventilation on a hot day) need to be manually reactivated after key put in and it's turned on. Has anyone had a rear defroster issue with a 14-18 GMC Sierra? all problems of the 2008 Chevrolet Silverado . It has an electronic control panel that moves to selected settings but nothing happens to change airflow. The failure recurred multiple times. The truck is a 2004 Silverado 2500HD, with dual climate control. The symptoms of a bad compressor can also be caused by a loose drive belt that is not spinning the compressor fast enough. The dealer contacted gm's tech. I'm guessing this thing has an elictric motor? My rear defroster is not working at all. Chevy refuses to acknowledge that this is a defected issue on their part and want over $1000. The blend or defrost will not work on my 2004 Silverado stepside 1500. The contact owns a 2006 Chevrolet Silverado. 2004 duramax will not defrost windshield or warm cab after 1 hour plus of idle operation. I have tried locating the rear defroster tabs, but I can't find them . Most is coming out of the vents. I've got a 19 denali with tech package. 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. Both vehicles will randomly start blowing hot air out the driver's side. Check your owner’s manual for the location of the rear defroster fuse. Rear defroster fuse:If the fuse for the rear defroster is blown, the defroster won’t get power. When it started doing it, I noticed sparks coming from what appeared to be my ac unit. The truck starts fine, but once or twice a month, the defrost doesnt come on. Something new I learned, though I only moved up to the remote start last year with my ZL1. I have pulled most of the dashboard off in order to see the vent doors. Nov 29 2017, 2:56pm. This is very frustrating and real cold on long trips when I should be able to get comfortable. Check your connections. Thread starter Jason24; Start date Dec 17, 2012; J. Jason24 Active Member. Browse Categories Answer Questions . Since it's an intermittent problem, I'm sure it would work fine if I take it to the dealer. Is there a stuck lever somewhere? This is ridiculous. I'm having the same issue. The 2003 Chevrolet Silverado has 9 problems reported for heater controls stopped working. The contact owns a 2013 Chevrolet Silverado. See 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. where would I find it? Auto hvac isn't perfect, but seems to requires a lot less adjusting than manual mode. I had problems with the defroster not working and no heat. Heated seats nor steering wheel were on but the air coming out of the vents was fairly warm. My defrost doesn't seem to work right it just seems to blow everywhere and not very much at that either. 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. Powered by Invision Community. Is there anyway you can get government motors to issue a recall?. Supposed to to be tied to the ambient temps when it is started. problems related to defogger (under the visibility category). no air coming out the dashboard or defrost vents. 0 /1024. Location central mass. Re: Rear defroster not working. Brand new 2016 Canyon. User Info. What can i do to check, clean or fix this problem? The heat in the Silverado is supplied by the hot engine coolant running through the engine cooling channels. Can anyvody tell me where to start? 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. When GMC expects me to spend my dollars with them in the future I, too, shall use the "can not replicate" mantra. I even have an aftermarket remote start installed (extended range of 15,000 ft.) that turns on the heated seats and rear defrost. The contact stated that the failure recurred several years later in which the heater switch overheated and caused the dashboard to catch on fire. I have a 1999 chevy silverado that the defroster does not work. Solution: The mechanic can check and replace the compressor if it’s not working … there is high volume air coming out the bottom right, towards the heatercore. The dealers responses were such that I was basically told that I would have to live with a potentially dangerous condition. Upload or insert images from URL. Any help is appreciated. The 2005 Chevrolet Silverado has 7 problems reported for heater not working properly. 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. Of course, that means the a/c is operating, reducing gas mileage and the cabin takes longer to heat. MY MISTAKE I should have added to tape or liquid tape over that area . 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. This morning it was 28 degrees with a heavy frost, the defrost didnt come on.