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nullptr said: It's fairly common for the fan to continue to run after the engine is turned off so it continues to draw air through the radiator and over the engine. I wouldn't worry about it unless it runs for hours. Dash temperature gauges aren't particularly accurate for more than, "Oh crap, it's overheating!"In this video Sean goes over why the radiator fan won't turn off on your 2014 - 2019 Chevy Silverado or GMC Sierra. Thermostat: https://amzn.to/333Vrzl - Temperature Sensor:... Getting AC off due to high temp. Fan doesn't shut off, constantly runs. From cold start in 0 degree f temps. I believe its the coolant temp sensor. changing them tomorrow. Car runs normally otherwise. … read moreA radiator fan that is constantly on may be triggered by the air conditioning when it is on. Be sure the air conditioning is off. If the radiator fan is still constantly on, it is most likely caused by the fan relay being stuck closed. Replace the fan relay. If this is not the issue the temperature sensor or ECU may have a problem.How To Fix Your Chevy Silverado Fan That Stays On. Solving your Chevy fan's problem is easy because the likely causes are few. Here are some solutions to why the Chevy Silverado fan won't turn off even when the engine is powered off: 1. Replace Fan RelayIf it does, this may be the excess air working its way out of the system. Shut off the car and add enough coolant to return the level to the “MAX” mark. Start it up once more and check for any coolant leaks from the reservoir, the radiator, the coolant hoses, and underneath the car.Step 3. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor. The relay, however, has direct power to one side, the same as a light switch. Step 3. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor. The relay, however, has direct power to one side, the same as a light switch. The radiator fan won’t turn off and engine temperature gauge doesn’t work.So we just replaced thermostat, cleared code (the car doesn’t have check engine lig...2020 Chevy Silverado 2020 LT Texas Edition CCSB, 5.3L, Shadow Gray Traded 2015 Canyon SLT, Copper Red, 2WD, CC, SB, V6, Tow, blk leather, factory spray liner, safety pkg, generic roll up bed cover, Tekonsha P3 Brake Controller, Replaced OEM at 70k with Michelin LTX Defender Please add a vehicle description to your Signature Line in your USER CP so we know what you are driving and can more ...Lastly, a dead fan controller module can prevent the fan from blowing both when the fan is off and on. Therefore, inspect the module and replace it (if necessary). As reiterated above, if your radiator fan is not working when the air conditioning system is on in a dodge 2003 caravan, inspect and clean or replace the high-pressure line sensor on the …2005 Chevy silverado, the cooling fans (raditor run when the key is off will not turn off on their own. I have to pull the relay so it won't kill the battery. I changed the center rally and thought it had fixed it. Just started it again and had to pull relay again. Mechanic'sApr 18, 2015 · 13 posts · Joined 2014. #4 · May 7, 2015. obermd said: Check your coolant level. Also, there is an ECU reflash to address cooling fan issues. Excellent, thanks for the info, I'm having this same issue as well. Fan comes on full blast and shuts off after a couple seconds. 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.Dec 10, 2021 · 162 posts · Joined 2017. #1 · Dec 10, 2021. I have posted here before about an intermittent problem with the radiator fan staying on after the engine is shut off. The strange part was that when the problem happened the coolant temp gauge on the dash would drop to dead cold. It would create a faulty coolant temp code and as soon as I cleared ... Chevy Mechanic: Chris (aka-Moose) The computer can command the fan to continue running after the engine is shut off to help lower the temps more. When an engine shuts off it gets much much hotter than what it was while running. The computer can see coolant temps that were near the top end when the engine was shut off and this resulted in the ...

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.Posted: Oct 21, 2019. Options. Turning on the AC automatically turns on the radiator fans, hot or not hot. In order for the AC Condensor to do its job it must stay as cool as it can. As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem. Before we dive into the issues, let’s take a glance at the history of the Chevy 5.3 and what vehicles you might find them in. The 5.3-liter displacement has remained the same for over 20 years now. It was first introduced in 1999 as a truck variant of the LS engine found in Chevrolet Corvettes and Camaros. Though many of the parts from an …3. Bad ECU Unit. Your Chevy’s engine control unit signals the fan when to turn off or keep running. A defective ECU will result in the fan not knowing when to stop running. 4. Low Coolant Level. The car coolant is the liquid that removes heat from the radiator. The lower the coolant level, the less effective it’ll be.Radiator Fan on full blast won't turn off even with car off, not running. How to fix it GMC Chevy. Coolant temp sensor replacement Thermostat & Coolant temperature sensor replacement: Yukon ...

2014 sierra ...cooling fan keeps running. wont turn off after driving ,stays on for five to ten minuets. in the morning as soon as i start the truck, fan's turn on. replaced the temp switch ...still the same. pulled fuses 12 & 13 (40amp) to turn off. what is the fix please.I just noticed my 2014 Silverado fan started running very high and continued after I parked and turned off the truck. After several minutes of checking for bad wires, I disconnected the negative battery terminal for 10 minutes. This seemed to work. No problems so far today.In turn, the unpowered fans won’t run, leaving the radiator to its own devices. See also P0481 Code: Fan 2 Control Circuit Deprived of the helpful influx of air from the cooling fans, the radiator cannot remove as much heat as it usually does.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Bump fan relay while they are running and engine cool may stop. Possible cause: Radiator Fan Wont Turn Off On Chevy Silverado 1500 Youtube Welcome back to the chann.