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1. Turn the ignition to RUN. 2. Press the DOME OVERRIDE button four times within six seconds. A chime will sound informing you that the system is off. The system will remain disabled until the ignition is cycled off and then on or by pressing the DOME OVERRIDE button four more times within six seconds.If the trucks been sitting and is hot inside the AC is going to need to run to cool it to wherever temp is set and this will remove any humidity from the air. Fwiw, I usually run my AC in auto in the same range -- 70 or 72. If the ambient is low enough that the AC doesn't need to run it could be a different story.Radiator Fan stays on. No A/C. Asked by almazanmike Apr 30, 2020 at 07:41 PM about the 2016 Chevrolet Silverado 1500 LT 4WD. Ok. Looked everywhere and can't find anything about this. My radiator fans are all out off whack (simply put). They. run from the time i turn the truck on to the time I shut it off.Mile_High. 546 posts · Joined 2009. #8 · Apr 20, 2010. Sounds like the ignition switch is the issue. My truck won't always start, it just doesn't close the circuit, so I have to pull back and try it again. Sounds like you have the inverse issue. 2 Transfer cases claimed by pump rub... 2001 Bowtie 2500HD, 198K, LB7, Extended Cab, Short Bed ...GM trucks turn the seats and steering heat off when the ignition is activated - so they have to be re-activated. GM cars (at least some) have auto activation of the heaters -- both when remote started and when manually started. You can test with one of those infrared thermometers - before and after a remote start.2012 Colorado Extended-Cab 41k miles. I have been having issues for about 3 months now. The issue is sporadic and happens randomly. It does it with both heat or A/C on. The blower fan will kick off then on. Sometimes it will work constantly with no issue. Sometimes it will kick off for a few seconds or a few minutes, then turn back on like normal.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.I have the 2014 Silverado 1500 5.3 LTZ with 93k miles on it. Has had some intermittent issues with the tan running super high and overcooling as well as running for about 5 mins or so after the truck is off. did my research saw the fix was the thermostat and that sensor next to it. Replaced both today and have driven around the truck, issue ...8670 posts · Joined 2015. #8 · Nov 10, 2023. ...5 year old thread, and the o.p. hasn't logged onto the site since then, you aren't going to get a response from that uesr. 2004 Sierra 3500 dually, 6.0L extended cab, cab&chassis flatbed, upgraded to 4wd. 2012 Silverado 3500 dually, 6.0l, crew cab, long box replaced w flatbed.The 2015 GMC Sierra 2500HD pickup truck has a maximum towing capacity of 17,900 pounds when using a fifth-wheel hitch and trailer. The truck can tow up to 14,500 pounds using a con...2010 GMC Sierra radiator fan loud and seems to run all the time 5.3 vortex. ... 2016 • 2010 GMC Sierra 1500. 0 helpful. 1 answer. My 2006 Chevy Silverado 1500 extended cab heater won't shut off when I turn heater off and when truck isn't started and still stays on. Sounds like the HIGH fan relay is stuck in the ON position. Pull the relay and ...If you’re in the market for a new pickup truck, you may be considering the 2020 GMC Sierra 1500. The 2020 Sierra 1500 comes with some noteworthy improvements over the previous year...2015 GMC YUKON 5.3L Vehicle's fans stay on after vehicle is turned off. Noticed a code P0128 - Answered by a verified GMC Mechanic ... 2016 gmc sierra 1500 5.3L. Radiator cooling fans run at constant high speed when truck is running and for several minutes after. ... Fan turns on as soon as I turn it on, ...Does your 2014-2018 Chevy Silverado, GMC Sierra, Suburban, or Tahoe radiator fan keep running? Here are the symptoms: Fans keep running, air conditioner stop...To fix a car radio that won't turn on, verify that the head unit isn't in anti-theft mode. If the head unit isn't powering on, use basic car diagnostic tools to test the automotive fuse and any built-in fuses. You should also test the pigtail connector, check the head unit's power wires, and check for poor head unit grounds.4 posts · Joined 2007. #4 · Jul 18, 2007. the car does go into "shut down" mode, dash lights off, radio turns off, unable to shift car into gear. I took it to the dealer again and it occurred there so they dont think i am crazy anymore. they could not figure it out but when they called GM one of their techs remember another acadia having that ...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.Oct 10, 2020 · The problem could even be in the way the A/C switch controls fan ON/OFF switching. The cooling fan system is rather complex. Look for the link on the forum to download a Lambda-platform service manual (2007-2016 will do). That document would be very helpful. Model year shouldn't be an issue since the cooling fan system wasn't changed much (if ...A positive a negative and then a signal that is the bcm telling the fan what percentage of speed to run. For the hot coolant engine off the bcm says to run at 50% if it’s between 225 and 234 (?) degrees for up to 300 seconds. If the coolant is above 235 or 236 it tells the fan to run at 75% max speed for 300 seconds.

That thread has everything you need, but also: There are several places you can buy a new custom harness that swaps right in for your 2002, they are about $120-$150. I pulled one for $11, and one for IIRC $17. (2005-2007 classic). The harness from a 2005 -07 classic, works right in your 2002 with just a relay.🔧 Experiencing the frustrating issue of your radiator fan refusing to turn off in your 2014-2019 Chevy Silverado or GMC Sierra? You're not alone! In this de...Anybody figure it out. My 2014 GMC Acadia Just started do the same exact thing!! Temp gauge drops to straight down, Fan blowing full and loud, A/C still Blows but Not cold and the recirculation button flashes. Kind of odd that it is the 2014's that have started doing this. Another way for GMC to make up spend money.Oct 28, 2022 · Coolant temp sensor replacement Thermostat & Coolant temperature sensor replacement: Yukon, Tahoe, Sierra, Silverado, Escalade GMhttps://youtu.be/7mJF5LQ3oPs...

j cat. there are 2 relays that must come on so the low engine cooling fan comes on. the low fan power relay will should be on and the contacts closed power on the contacts. then the fan control relay will turn the low fan on and off. the fan control relay sends the ground thru a diode D1 to the ground for the engine low cooling fan driver side.Options. This can be caused by a few things. To diagnose it you need to work backwards: 1. Bad battery or low charge, or bad connections at the battery terminals. If the terminals are full of white snowy looking stuff disconnect them and clean them up. If a terminal is loose (you can turn it with your hand) tighten it. Check the battery voltage.The ECM badly ever fails, so let's look at why the ECM would command the fans on. The ECM reacts to inputs, in this case, the information from the temperature sensor. So, it would have to be a problem with the engine temp sensor, or the wiring to the sensor. Ray. '09 Avalanche LTZ - 5.3 - 4x4 - Black. Like. Gunny81 Discussion starter.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Oct 28, 2022 · Coolant temp sensor replacement Th. Possible cause: 2016 Radiator cooling fan stays on. 2016 Radiator cooling fan stays on. On my 2016 twice i.