2015 Sierra 1500 5.3 Cooling fans not running/fan relay. Hi, I am having some issues with my cooling fans. I have a 2015 Sierra 1500, 5.3 WT. I cannot get the cooling fans to turn on. The truck will overheat before they kick on. I tried to force them on through hp tuners scanner and nothing. Both fan fuses are fine and I do not have any codes.The fan had been on the lowest setting last time I drove the truck but now it doesn't seem to do anything. If I push it in which would turn on the AC the light comes on and the AC does come on as well. ... The truck is a 2007 GMC Sierra 2500HD, new body style. Save Share. Like. Sort by Oldest first Oldest first Newest first Most reactions. N ...More than likely its working as it should if your temp stays normal. ... My next truck will have a clutch fan, but it also wont be a GM. Thanks, Will 2017 Silverado 1500 QC LT True North Edition 4x4 - Love it. 2011 GMC Sierra 1500 CC 4.8L 4X4 -Traded. 2004 GMC Sierra 1500 CC 5.3L Z71 - 350,000km/ 217,000 miles - RETIRED! Save Share.2016 temp gauge not working, radiator fan runs constantly, 3.6L. All of a sudden, the temperature gauge doesn't work (stuck on "L") and the radiator fan runs on high as soon as the car is started. The fan continues to run for a few minutes after shutting off the car. The auto stop/start feature also is disabled.My 2015 GMC Sierra 1500’s radiator fan is running full blast non-stop. It started doing this all of a sudden, runs full blast idling, going down the road, and for 5ish mins after the truck is turned off. I have coolant and the radiator doesn’t have any visible exterior gunk on it.I just bought a 2015 GMC Sierra 1500 work truck with the SLE convenience package so i got the power windows and back up camera. This is the first truck i have ever had with all the fancy stuff that i think goes wrong faster and was debating on even buying it. I have been having issues and was wondering if anyone else is having similar problems. 1.1. Engine Cooling Fan Shroud. 23420530. Fan Shroud. Sierra, silverado. With eassist. Helps regulate engine temperature Houses cooling fans Helps optimize airflow This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors . MSRP $251.71. $160.16.Here's the problem.....02 Silverado 1500 5.3 2wd. Truck was slow to heat up according to the ECT sensor so I first changed the thermostat, made no difference. New ECT sensor, made no difference. Drained, flushed several times, and refilled system with green antifreeze, made no difference. I feel that I have thoroughly purged all the air out but ...Aug 1, 2016 · 26 posts · Joined 2016. #2 · Aug 1, 2016. I've got the same thing going on and I've asked the same. I thought maybe any performance, aftermarket parts or anything to keep the engine nice and cool but all I got was let the fans do its job. And to clean the radiator stacks. This is my first diesel so I was pretty worried that I was going to OH ...So the fan on engine off will start at 225 degrees water temp and will run for 300 seconds. if your engine is off, like not even in accessory on, and the fan runs for more than 300 seconds then there is one of two problems: 1) there is a temp sensor failure or bcm hiccup. 2) your water temp is over 254 and it's in emergency mode.18 2018 gmc sierra 1500 radiator fan assemblyFor 2007-2013 gmc sierra 1500 radiator fan assembly 84234pd 2008 2009 . Dorman Auxiliary Fan Assembly fits GMC Sierra 1500 Limited 2019 5.3L V8. Check Details. RADIATOR FAN STAYS ON ALL THE TIME CHEVY, CHEVROLET, GMC, BUICK. Check Details. UAC® - GMC Sierra 1500 2006 Dual Radiator and Condenser Fan ...ACDelco Coolant Temperature Sensor 213-4333. Location: Coolant Temperature Sensor. Part # 213-4333. SKU # 475621. Year Warranty. Check if this fits your 2015 GMC Sierra 1500. Select store. for pickup availability. Standard Delivery by May 25.I have a 2005 GMC 1500 Sierra 5.3 with the dual electric fans. The truck has 205K miles on it, and it has been a good truck. I bought it new in 2005. This past week, I had to jump start the truck, since the battery was dead. After jumping it off and driving it, I got home and noticed the electric fans staying on after the engine is off and keys ...Cooling Fan for 2019 GMC Sierra 1500. 5.3, 6.2L. Silverado, sierra. 4.3L. Helps regulate engine temperature Houses cooling fans Helps optimize airflow This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors . 5.3, 6.2L, with enhanced towing. Supplies power to the engine cooling fan Helps ...Jan 7, 2021 · 493 posts · Joined 2016. #1 · Jan 7, 2021. Hello, I have a 2005 GMC Sierra 1500 extended cab z71. Came with the L33 5.3. Previous owner ran it low on oil and needless to say the motor was a goner. I swapped in a 03 5.3 LM7. My truck came factory with electric fans, the 03 of course did not. Now the electric fans run the whole time the truck ...21 posts · Joined 2011. #1 · Jul 26, 2012. I'm was driving today down the highway with my ac heater unit off and all of a sudden it turned on by itself full blast. It will not respond to te dial and when I shut the truck off and pulled the fuse it stays on I had to pull the main blower fuse under the hood to stop it but the wierd thing was ...I wanted to create this video as I struggled with this issue for a couple days... basically, i plugged in the engine block heater on my Sierra 3.0 Diesel Dur...3. Warm Air is Blowing. When you turn on the air conditioning, you expect to feel cold air pour out. However, when the AC pressure switch goes bad, warm air might be all you get. However, this problem is also caused by low refrigerant levels, which should be checked regularly. 4.Regular maintenance, such as cleaning and flushing the radiator to remove accumulated debris and deposits, is essential to ensure the radiator can effectively cool the coolant and prevent engine overheating. 4. Clogged radiator. A blocked radiator can also contribute to engine overheating in Sierra 1500.Silvery13. 7562 posts · Joined 2013. #9 · Oct 19, 2013. I had asked Lew the same question a couple of weeks ago. I set the % of power like he indicated; 40, 45, 50, etc. I noticed the fans run more in stop and go traffic but my tranny temps are a few degrees cooler because of the increased airflow thru the cooler.Cooling fans running on high speed. I have a 2014 Chevy Silverado 1500 5.3l that I am having a issue with the cooling fans running on high occasionally. When this happens my temp gauge will read zero and when I kill the engine the fans stay on. The only way to shut them off is to crank the engine and shut it right back off.This is a relatively common problem with these trucks. It appears that the problem is with the Engine Coolant Temperature (ECT) sensor or its wiring. When the ECU doesn't get a signal from the ECT, it doesn't know if the coolant is too hot or not and so as a failsafe, it runs the fan at 100% to avoid overheating.Noticed the temp gage wasn't working. Pulled over to check and found cooling fans running on high. also noticed when I drove back home the AFM not working. Cooling fans would not shut off when engine was shut off. You tubed and seemed temp sensor may be culprit. Replaced temp sensor but did not fix problem. also removed negative battery cable ...2015 Chevrolet Silverado 1500 LS Crew Cab RWD-Maintenance & Repair. ... I have a 2005 Chevy truck 1500 is the fan supposed to stay on when truck is running. 2005 Chevrolet Silverado 1500- ... Used GMC Sierra 1500. 1,920 Great Deals out of 67,939 listings starting at $3,795.The cooling fan relay controls the fan's operations; if it fails, the fan may run continuously. Due to the inconsistent operation of the fan, the temperature gauge may also become inconsistent. You may get the wrong readings on the dashboard. Solution: First, find the cooling fan relay, usually mounted in the fuse box.For 2014-2018 gmc sierra 1500 auxiliary cooling fan left ac delco. For gmc sierra 2500 / 3500 radiator fan blade 2011 2012 2013 6.0l for2015 gmc sierra 1500 max trailering rating stays at 12,000 Dorman auxiliary fan assembly fits gmc sierra 1500 limited 2019 5.3l v8For 2007-2013 gmc sierra 1500 radiator fan assembly 84234pd 2008 2009.2005-2007 gmc sierra 1500 radiator fan motor fan assembly Gmc sierra 2500 hd radiator. cooling, make, system 2006 gmc sierra 1500 radiator cooling fans at am autoparts Tahoe avalanche radiat ... apdi coolant engine sierra gmc Gmc fan sierra cooling stays For 2011-2016 gmc sierra 2500 hd radiator denso 59156jv 2015 2012 2013. Gmc Sierra 2500 HD ...If recirculation is selected with one of these modes, the indicator light flashes three times and then turns off. While in recirculation mode the windows may fog when the weather is cold and damp. To clear the fog, select either the defog or defrost mode and increase the fan speed. Page 8-2 to be precise.Radiator condenser cooling fan for gmc sierra 1500 2500 hd yukon chevy Gmc sierra fan assembly 1500 fits dorman auxiliary v8 3l limited Royal blue gmc sierra on fuel off-road wheels — cari ... 2014 gmc sierra cooling fan stays on all the timeMonster gmc sierra truck rendering jam imagines gm sponsored links cab ready single Top 9 best gmc ...Fans start running within 10 seconds of startup, regardless of outside temperature. I have noticed that when fans are running, fan speeds vary from time to time; cant identify any consistencies as to why fan speeds vary. Fans stop almost immediately after turning off the ignition.- 2002 GMC Sierra Denali Quadrasteer 6.0L AWD, 4.10s, K&N FIPK, Blackbear, Dumped Magnaflow, Goodmark Cowl - - 1994 K1500 Chevy Blazer Silverado TBI 5.7L 4x4, Last year of the Full Size 2dr Blazers - Keep it Professional Grade.Conclusion. Car fans staying on after the engine is turned off may be caused by several reasons, such as low coolant level, malfunctioning cooling system, still-on A/C system, electrical issues, or computer control. A low coolant level can cause the engine to run hot, resulting in the need for the fan to run more frequently to keep the engine cool.This article applies to the Chevrolet Silverado GMT800 (1999-2006). There are several signs that you can look for to tell if your blower motor might be on its way out—for instance, if your HVAC blower does not operate at different speed settings or doesn't work at all, that could be a sign the motor is on its way out.The 2015 GMC Sierra 2500HD Denali is a full-size, top-of-the-range pickup truck. It is a crew cab model, offering four full-size doors and generous room for five adults. The Denali name signifies the apex of luxury intersecting with excellent payload and trailering capabilities. A handful of pickup trucks combine high-end luxury with robust ...2019-2021 Silverado 1500, Tahoe, Suburban, Sierra 1500, Yukon, Escalade; 2020-2021 Sierra 2500HD/3500HD models may have several conditions that could potentially cause improper shutter operation . Several DTCs may be set , depending on the specific conditions . CONTINUED ON PAGE 2 March 2022, Volume 24, No. 5If this switch is accidentally turned off, your remote system will be non-functional and it won’t respond to pressing the start button on your car. Solution: Check whether the switch is in the on or off position. If turned off, simply flip the toggle switch back on and then try to remove and start your truck again.This is a relatively common problem with these trucks. It appears that the problem is with the Engine Coolant Temperature (ECT) sensor or its wiring. When the ECU doesn't get a signal from the ECT, it doesn't know if the coolant is too hot or not and so as a failsafe, it runs the fan at 100% to avoid overheating.Blower Motor Won't shut off. 2005 GMC Z71 1500, W/ Dual digital climate controls. While driving today blower motor Kicked out, I turned up the fan speed and it kicked back in. Got to my destination, turned off the key and the blower kept running. Took my climate controls out and the fan continued to work, ended up pulling the 40amp fuse in the ...I have a 2015 GMC terrain my fan run when I turn my engine off should I be concerned ... 2,115 Great Deals out of 41,179 listings starting at $1,500. Used Nissan Rogue. 2,170 Great Deals ... 42,237 listings starting at $1,300. Used Chevrolet Tahoe. 1,168 Great Deals out of 22,363 listings starting at $1,995. Used GMC Sierra 1500. 2,011 Great ...According to the towing capacity chart on GMC.com, the 2015 Sierra 1500 can accommodate up to 12,000 pounds when properly equipped. This chart is intended help customers identify h...Yes, actually it did. When the sensor fails, the radiator fan runs at full speed like the car is overheating. When you shut off the car, the fan continues to run at full speed for at least 15 minutes. It drains the battery. You drain your battery completely dead too many times and you need to replace it.1. AC Blowing No Air at All. Usually the culprit. If your GMC Sierra 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.GM Mechanic: Frank@AutoPro. No, since the radiator fan will not turn on. That would be a test overnight, to see if the battery drains or not. The cooling fans are activated by the engine control module. Ask Your Own GM Question. ok. fuses are out and fans are off. GM Mechanic: Frank@AutoPro. Great.One that is constantly on and one that comes on with the ignition accessory. The reason for the two is that the constant power keeps your radio's memory (from clock, to present stations, etc) and the other is to 'turn on' the radio when the key is turned in the ignition. It sounds as though for some reason the wire to feed constant power to ...Solution: Turn your vehicle’s engine off to ensure safety. Then, look for the temperature sensors, usually mounted near the radiator. Once found, disconnect it from …There's 3 main causes for your issue: 1: the engine coolant level is low. 2: the engine coolant thermostat is going bad (sticking open) and 3: the coolant temp sensor is going bad. The most common problem I see is the thermostat going bad, but I would check to make sure your engine coolant is full.The heater may stop working in GMC Sierra 1500 due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or HVAC control unit malfunction. 1. Low coolant or air in the cooling system. Low coolant level or air in the cooling ...The best remedy for this is getting your A/C serviced. From you description, it sounds as though the system isn't building enough pressure, and by relation enough heat to turn the cooling fans on. In other words, the system is low on refrigerant. I would confirm this by connecting A/C gauges to the system to see what the pressures are on the ...Low speed operation is due to 12V power being passed on to the two cooling fan motors in series. When you turn off the engine, and the fans operate on low speed, pull out the third relay and see if the fans stop. 2008 Sprinter 2500 170 - camper van. 2001 Suburban LT 2WD, 5.3, V8 311,000 miles, leaks oil now at rear main seal.brandonsbird02 Discussion starter. 22 posts · Joined 2009. #1 · Jun 12, 2011. So I took my truck to a mechanic to look at the a/c. It runs and gets somewhat cool but does not get cold. Not even cool enough in 85 degree temps to be comfortable. He checked the freon levels and they were actually high so he got it to the normal levels.32 posts · Joined 2011. #4 · Nov 13, 2023. The purple wire is smaller, maybe 14-16 gauge, while the red and black are 8-10 gauge going to the resistor. The red and black have 12v regardless of the speed it is set to. There are like 10 different speeds since it is the digital auto climate unit. The purple from the resistor to the fan motor is ...One of those may be broken and contacting body somewhere and allowing the fans to be stuck on. If you're wiggling harnesses/wires and other electrical functions …