AC is not working Inspection. $111.46 - $131.46. Get a Quote. Or For Any Other Auto Repairs. Get a Quote. Jay Safford. Automotive Mechanic. 16 years of experience. You may have shorted out the A/C blower resistor that controls the blower speeds.From Bently directions, paraphrased: Locate the radiator coolant switch, driver's side low down on the. radiator, dislocate the plug, and using a fused jumper wire, close pins 1 and 2; both fans should run low speed. Then try closing pins 2 and 3; both fans should run on high. If the tests fail, replace the switch.Fan clutch always on!! My dad has a '13 F250 CCSB 6.7 w/ 10k miles. I drove it the other day for about 30 miles in 90 degree heat and the AC on. The engine fan seemed to stay engaged the entire trip. Motor nose from the front of the truck was quite loud increasing with rpm to a roar at 3 k!. I even secured all climate controls to see if it ...Key Takeaways. The radiator fan turning on and off constantly can be caused by various factors such as a failed radiator fan, overheating issues, poor fan maintenance, or the wrong fan type. Faulty coolant temperature sensor can also lead to erratic fan behavior, and it may require calibration or replacement to fix the issue.If the pilot won't light, check to be sure you have propane. One other RV heater troubleshooting tip is: check the thermocouple. Be sure it is clear of any spider webs or insect nests. The thermocouple needs to be in the correct position in the burner to work correctly. If the thermocouple is bad, remove it and buy one exactly the same as the ...Replace the Fan Control Module (if necessary): Disconnect the wires connected to the faulty control module, carefully removing them. Install the new module by reconnecting the wires. Reconnect the Battery: Restore power by reconnecting the negative terminal of the battery. Test the Fan Operation: Start your Range Rover and observe the fan behavior.When facing a fan that won’t turn off in your 2015 Yukon Denali, it’s essential to diagnose the problem with the climate control module. Follow these steps to troubleshoot the issue: Check the fan speed setting: Ensure that the fan speed control is set to the “off” position. It might seem obvious, but sometimes an accidental switch can ...If you turn off your car after you get it to temp then start it back up your temp gauge won't drop and turn fans on high. Temp. Fix . 3 people found this helpful. Mark helpful. 70 Report; ... I know this is a camaro thread but I'm having the same issue with a 2016 Z51 stingray, happens off and on, today especially. Reset the ECM with the batt ...Attach the replacement thermostat where the old one sat using the proper mounting clips or screws. Reconnect wire leads. Plug the electrical connections back into the new thermostat following your notes. Replace control panel. Reposition and secure the oven control console or trim ring with its mounting screws.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.Replace the Fan Control Module (if necessary): Disconnect the wires connected to the faulty control module, carefully removing them. Install the new module by reconnecting the wires. Reconnect the Battery: Restore power by reconnecting the negative terminal of the battery. Test the Fan Operation: Start your Range Rover and observe the fan behavior.As you may know the coolant fan relay turns the fans off and on by receiving information from the coolant temperature sensor at specific temperature thresholds. When this relay is not working properly, this can cause the fans to come on intermittently, stay on all the time or sometimes not at all. When this happens you will …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.First, check the condenser to make sure it’s not blocked by any debris. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Determine if the blend door is moving. Check the system pressure. If it’s low, you’ll need to charge it and find out where the leak came originated.As all Spider-Man comic book fans know, with great power comes great responsibility, and being a great manager isn't just about being good at telling people what to do. It turns ou...It doesn't come on with the heater. 2015 - 2020 Ford F150 - 2016 5.0L- cooling fan issue - Since I bought my 2016 back in September, Ive had a weird issue. On a cold start, with the key, the fans do not turn on. I could be wrong, but sometimes when I remote start it, it does seem as if it does it but it could also be the HVAC fan turning on ...My dads dodge truck always does this and his ac system is discharged and not in use anymore and when the defroster is on and/or the heat it cycles on and off every 30sec. or so. 1995 C1500 4.3L 2WD 5Spd. JET TBI Spacer, JET stage 1 chip, 10mm Taylor custom wires, etc.. 295k miles and still going strong... 2012 Silverado 1500 4WD Z71 5.3L, 135k. M.explorer_2. • 1 yr. ago. You probaly have a PO128, yea might be the temp sensor but like me (and many others) you probably just need to replace its thermostat. Has to do with differential between what it wants to see temp wise run time @ ambient + engine load ect and then reported temp, gets off by couple to many degrees it triggers failsafe ...If it is running after the car is turned off something is keeping the fan relay closed. Most likely water in the ECU box. The temperature sensors or thermostat will not cause this since they are not powered up after the car is turned off. '03 A4 5-MT Motoza tuned Frankenturbo F21L With full supporting mods.2017 Colorado Z71 3.6L V6 4WD Extended Cab Summit White. 2000 Pontiac TransAm WS6 5.7L V8 LS1 6 Speed Manual RWD Black. Bed Lined Grille Bow Tie, White Bow Ties, WeatherTech (Floor Liners, Mud Flaps, Bump Step XL, Hood Protector, Side Window Deflectors & Sun Shade), BedRug, UltraFlex Tonneau Cover, Carhartt Seat Covers, Westin HDX XTREME Nerf ...After plugging in shore power, opening the LP valve, and closing the battery disconnect switch, I started the furnace by moving the Suburban thermostat from "off" to the midpoint between off and "warmer." After normal startup and running fine for a few minutes, I lost the shore power connection (GFCI tripped in the house) and the blower began a ...To turn off the entire system, you need to press the O button that has a tick line through it! ATL GA USA. 2013 Titanium<SEL Tuxedo Black 2.0 Born on 2012.07.19. OEM HIDs, PanoRoof, Sony MFT Nav, PVD Chrome Rims. Packages: 302A, Parking Tech, Ford Towing.On my 2016 twice in 2 months the cooling fan would stayed on after I turned off my car. The engine was definitely cool enough. I pulled fuse #74- 40 amp, appears to …My car will not turn off after the ignition has been turned off. Dash screen gives message "shift to park". Dealership can't find the problem 3 Answers. My car will not turn off after the ignition has been turned off. Dash screen gives message "shift to park". Dealership can't find the problem. Seems to do it more in the hot summer. I have to ...Dealing with a freelance client that won't pay? Here are some actionable steps you can take to recover your unpaid invoices. Dealing with a freelance client that won't pay? Here ar...It's really a simple concept: the blower motor controller pulses either the power or the ground circuit on and off depending on which fan setting you choose. For example, if you set the fan to the lowest speed, the controller may provide power for 3/10 of a second every second, while providing power or ground for 7/10 of a second every second ...A/C Fan will not shut off/slow down! I started the car a couple days ago and the fan turned on full blast and will not shut off, even with when I turn the car off and remove the key. The climate control dials and buttons work to change the temperature or switch location (defroster, face vent, etc.), but I cannot turn off or slow down the fan.It's really a simple concept: the blower motor controller pulses either the power or the ground circuit on and off depending on which fan setting you choose. For example, if you set the fan to the lowest speed, the controller may provide power for 3/10 of a second every second, while providing power or ground for 7/10 of a second every second ...2016 Ford-150 The cooling fan will not turn off. Asked by Guru58L6Z Jan 27, 2018 at 08:43 PM. Question type: Maintenance & Repair. I started my truck to move it to a different spot in. the yard, it was only a very short distance. I turn. off my vehicle but the fan kept blowing at first I.35 posts · Joined 2009. #1 · Jul 12, 2012. Up until today I have had no problems, but with the hot temps, I added a can of refrigerant to the AC system (just like every summer). When I went to shut the car off and remove the keys, the heater blower fan, just keeps blowing. The buttons and fan control have no effect, although I can still ...Usually a faulty cooling fan relay will produce a few symptoms that can alert the driver that service may be required. 1. Engine running hot. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal ...The trick is to use a second circuit to accomplish this. The high speed circuit uses a second fuse and a relay (for the switch). In the newer trucks, the relay is part of the resistor assembly, on your truck it might be separate and it might be the relay you pointed out. Check for a bad fuse, and them look at the relay. Thanks for the reply.Apr 29, 2015 · Apr 29, 2015. #1. My rear AC blower has been sporadically working lately, but as of yesterday won't turn off at all, even with the motor off and key removed. Today I disconnected both the front seat (near the shifter) and first rear seat controls for the rear AC. It didn't change anything.IT SHOULD BE A BETTER CAR. PLEASE HELP US. - emejia , Hi, US. The 2016 Chevrolet Suburban has 15 problems reported for a/c condenser failure. Average repair cost is $1,050 at 68,950 miles.WHY CHEVROLET TAHOE SUBURBAN RADIATOR FAN STAYS ON, FAN DOES NOT TURN OFF 2006 2007 2008 2009 2010 2011 2012 2013 2014If you have Chevrolet Tahoe / Chevy Sub...Attach the replacement thermostat where the old one sat using the proper mounting clips or screws. Reconnect wire leads. Plug the electrical connections back into the new thermostat following your notes. Replace control panel. Reposition and secure the oven control console or trim ring with its mounting screws.The cooling fan relay is an electromagnetic switch that controls the power supply to the engine's cooling fans. Without it, the cooling fan won't work. Without the radiator fan, your engine can run hot and be at risk of overheating. A faulty relay can be caused by a bad relay control module, ants in the relay, or an electrical short.Had a similar problem with my 2021 AT4. Fan stayed on with the car off and almost drained the battery in a few minutes while I was trying to figure out what was happening. Had to disconnect the power to the fan, temp gauge was bellow cold. Heater hose was hot. Pulled code P0128, turned out to be the thermostat. J.Hello everyone , i have a 2028 2lt Cmaro , my AC stopped working , and fan wont shut off i was told it needs new thermostat and new sensor now that i got al this fixed up, fan turns off as soon as i turn the car off , the mechanic did not balance the buttom coolant reservior evengly and i am afraid it will start over heating ..106 posts · Joined 2005. #2 · Jun 5, 2007. That is not normal. Probably a bad fan relay. There are 3 total but only two could cause this problem-either the Condenser Fan Low Relay (both fans may run) or the Condenser Fan High Relay (only one fan runs). The relays are in the fuse box next to the battery. Removing the bad one will stop the fan.The flashing light often indicates a misfire, which can cause damage to the catalytic converter. When this happens, the engine should be turned off immediately to prevent further damage. 1. Loose or bad gas cap. It is possible for the check engine light to come on in Suburban due to a loose or bad gas cap.Wife says there was no XM radio and no odometer, AM radio all that worked in cluster, but won't tune. They take it up to O'Reilly's and they test the battery good. Start it up and it's like nothing ever happened, everything is back and all is right with the mama mobile.AZ59apacheguy Discussion starter. 110 posts · Joined 2012. #1 · Feb 13, 2014. Hi. So the blower fan in my SE '08 Titan won't shut off when turning the blower speed control to the off position. The A/C,directional position and temp controls all work. I had to go to the dealership for an oil change anyway. When I was there I asked the tech what ...T. twanlo456 Discussion starter. 28 posts · Joined 2018. #1 · Jul 21, 2019. I have a 2014 XTS, as of yesterday My radiator fan will not shut off. The fan initially, keep running after I shut the car off totally draining my battery. After recharging the battery, The Fan continued to run, until I disconnected the battery.Automatic Operation Using the Rear Controls. Make sure the power is on. Adjust the Temperature knob to the desired temperature. Press the Auto button. The system will automatically adjust the fan and air delivery mode to reach and maintain the selected temperature. Note: If you adjust the fan or mode afterwards, Auto mode will deactivate.Headlights Don't Turn On. The most common sign of a bad headlight relay is headlights that don't work. A headlight relay will typically fail in the open position, preventing voltage from reaching the headlights. If the low beam relay fails, the low beams won't work. Likewise, if the high beam relay fails, the high beams won't work, and ...2014 GMC Sierra 5.3 Cooling fans continue to run after truck. 2014 GMC Sierra 5.3 Cooling fans continue to run after truck is shut off. AC doesn't work, temp gauge only shows 160, transmission fluid temp. Jonathon. Diagnostic Technician. Bachelor's Degree. 305. Show more. Disclaimer: Information in questions answers, and Show Less.2. Verify that the air conditioning drain hose is not clogged and place a drain pan beneath the vehicle. 3. Place a protective cover over the carpet below the evaporator core. 4. Remove the cabin air filter, if equipped, and cover the opening prior to applying a cooling coil coating, as the product may clog the filter.The 2016 Chevy Silverado has an electric cooling fan that is controlled by the vehicle’s computer system. If this fan does not shut off, it is likely a problem with either the computer or the wiring connecting it to the engine. To diagnose and fix this issue, you should start by checking all of your fuses and relays related to the cooling ...GMC AC button flashes thrice and does not turn on. I have seen this thread on the forum but couldnt get some solid answer so far. My AC suddenly stopped working yesterday after a whistling sound from the blower. Now it is only throwing in air. When I try to turn on the AC , it flashes 3 times and then turn off.Car starts fine, but now the AC blower won't turn on at any setting. All the normal AC lights come on on the dash, and I can hear the engine revs changing when the compressor kicks in, but no air comes from the vents at any of the 4 fan settings. ... 2016 at 0:46. DucatiKiller. ... since you say the compressor does turn on/off. You can confirm ...May 16, 2017 · Fastest way to fix engine cooling fans that won't shut off Tahoe Silverado YukonChevy Mechanic: DarrenD41. It is caused by a trouble code being stored in the PCM (powertrain control module). It is a protection feature that enables fan to run when off to keep engine from overheating if there is a problem. Scan for codes and there will be some stored in there.If the traction control light won't go out, it could be due to the ABS system, including the wheel speed sensors or reluctor ring. It could also be due to a defective steering angle sensor, ABS control module or a failing battery. If not, consider a wiring issue, a blown fuse or low brake fluid.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.In recent years, sports fans have witnessed a shift in the way sports news is reported. Traditional media outlets have been challenged by a new player in the game – The Athletic. F...Its gotta be your temp sensor id think. 210* with the fan goin full blast just doesnt happen haha. Temp sensor is what the computer uses to decide when to turn on the fan or not. Also is what controls the gauge on the dash. Its right by the thermostat elbow threaded into the head. Its a cheap part so it would be worth changing just to rule it out.RJ_01dmax Discussion starter. 261 posts · Joined 2009. #1 · Jan 22, 2010. Today when I was driving home...about a 2 hour drive, my heater would not shut off. Usually when I turn the fan control to the off posistion it will still blow air, but the temp control would work. Today there was nothing but very hot air coming out.613 posts · Joined 2012. #3 · May 8, 2014. AJ's Sierra said: So I start my '14 sierra this morning and it sounds louder than usual. The fan seems like it's loud and doesn't shut off.. Last night I had to take take out and unclip my air filter in order to get to my headlight assembly.. I put everything back as I did the previous night before ...Go to the under the hood fuse block. Next to it is a smaller box containing the three cooling fan relays. Pull them out, one at a time, until that fan stops running. That's the one that is stuck "on". Take that stuck relay to the parts store and get the replacement. It should be under ten bucks.Jan 20, 2021 · The radiator fans on my Chevy Silverado 1500 stayed running when I shut the truck off. I tested the rad fan relays, fuses, and coolant temperature switch. I ...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 ...by Admin. The Cadillac Escalade fan won’t turn off can be caused by a malfunctioning fan relay switch, a faulty thermostat, or a problem with the cooling fan motor. If your Cadillac Escalade fan won’t turn off, it could be due to a few potential issues. Consider replacing the fan relay switch with a reliable option like the Radiator Cooling ...AC/Heater Blower will not turn off! 1st time I've encountered this, when I turned the car off after a drive, the blower on the inside stayed on. So then I turned it off, and it still stayed on. So I pulled the HVAC Blower fuse on the passenger side and it still stayed on. So then I disconnected the battery (it turned off).Conditions: Air temperature 30 degrees F. Front defrost button on. Auto shut off mode was active (fuel saving mode). As some point along her 20 mile trip the radiator cooling fan came on. I thought this was odd due to the air temperature. At stops the engine shut off as expected. Cooling fan continued to run.It was a fractured radiator hose - check your cooling system for issues. OP, it shouldn’t do this for more than say, 30 minutes. You need to check your coolant level and engine temp, if either is not where it should be then you need to fix that. Otherwise, this is fine. The fan runs to cool off motor.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.The cooling fans just recently started staying on after I shut off the engine. The temperature gauge stays around 165 degrees, even while driving. ... But if the engine is off, the A/C won't turn on at baseline, which would result in warm air. Cooling fans are able to stay on until the set parameters as it pertains to coolant temp are reached ...It doesn't come on with the heater. 2015 - 2020 Ford F150 - 2016 5.0L- cooling fan issue - Since I bought my 2016 back in September, Ive had a weird issue. On a cold start, with the key, the fans do not turn on. I could be wrong, but sometimes when I remote start it, it does seem as if it does it but it could also be the HVAC fan turning on ...Hey hoping someone has some info on this problem, the heater-a/c blower fan is stuck on blast, wont shut off, can't turn it down. Heat and a/c seem to be working fine. Any help would be appreciate thanks. Join the Elite Explorers for $20 each year. Elite Explorer members see no advertisements, no banner ads, no double underlined links,.2 posts · Joined 2017. #1 · Aug 16, 2017. I own a 2014 Chevy Cruze LT2 Gen 1 / 1.4 Turbo with 30,000 Miles. Never been in accident and always treated well. Im having an issue with the radio randomly shutting off and turning back on, the music stops and the screen goes blank. At first it was just the radio turning off and the music shutting ...Originally Posted by JimD. The first thing to try is to remove the power from the furnace by pulling its fuse. I know you switched the power off but power may still be applied to the board to bypass the switch for cool down. Removing all power will reset the board logic (think computer reboot).The blower is supposed to stay on for a few minutes after the car is off. Look in your owners manual. I think it's primarily for cold weather, it keeps the car interior warm until the heater core completely cools down. Not to say you don't still have a problem separate from that.Sep 25, 2020 · tortuga13. My 2013 sits at 210 most of the time. The fan runs at power level based on engine coolant temp. It shouldn't completely shut off at 210 and below. It will adjust power percentage based on temp. It's pretty quiet unless it's really running on high power. Most of the time you won't hear it because it is running on low power.The most common causes for AC blowing hot air in Chevy Suburban are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube ...9 posts · Joined 2013. #29 · Dec 17, 2013. As some have mentioned, cooling fans running after the car has turned off happens when the car was in the middle or just finished a regeneration cycle of the DPF. The regen raises the temperature of the DPF to "coke" the soot in the DPF, and when its hot you can smell the heat.First, check the condenser to make sure it’s not blocked by any debris. Inspect the cabin air filter (if equipped) to verify that it is not clogged. Determine if the blend door is moving. Check the system pressure. If it’s low, you’ll need to charge it and find out where the leak came originated.1) There is a high level of air in the system, and this number can be found by opening the low-pressure side valve on some radiators. 2) A thermostat might have gone bad or have dirt buildup on it, preventing it from properly regulating temperature and causing the radiator to turn off.The blower motor is the main electric motor in the car HVAC system. The purpose of this blower motor is to allowing blowing air to come through the vents by transferring the electrical current. It uses a motor resistor and switch to control the speeds of airflow. For this, You can operate and regulate cabin temperature according to your preference.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.Solution: Park your car on a level surface and turn the engine off. Let it sit for a few minutes to cool down the engine. Open the car's hood and access the coolant tank. Dip the stick and check the coolant level to ensure it is at the recommended level. If it is down, refill the good quality coolant.OK. So, I have 3 relays in the relay housing for the fans. 2 are grey 4 prongs and the other is a black 5 prong. I pulled the grey one in the center and the fans cut off (Cooling Fan 1 relay). I then pulled the other grey one (Cooling Fan 2) and put it in to where the other was just pulled and the fans started up again.A feature in the computer called "afterblow" may have been enabled. It watches the car as it is being driven for things like AC operation, outside temp, etc. Then, after the key is off for about 5-10 minutes, it'll run the HVAC fan for a few minutes. This helps dry the heat exchanger so it doesn't grow as much mold or other biologicals, which ...Jul 9, 2018 · 2016 suburban shut off without warning. Asked by StephRoberts12 Jul 09, 2018 at 10:58 AM about the 2016 Chevrolet Suburban. Question type: Maintenance & Repair. As I was driving my suv died... as though. someone unplugged it. Before it happened. my radio (computer screen) flashed off/on. but no mechanical signs or lights on the.Interior lights that won’t turn off in your Chevy Suburban can be caused by a few different issues. When these lights refuse to turn off, it can be both annoying and potentially dangerous. The constant illumination can cause distractions while driving, and it may even drain your battery, leaving you stranded. In this article, you’ll learn ...Sep 13, 2019 · Once the temp gets so hot, the ECU commands the radiator fan to come on. If your Suburban has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. You’ll need to locate and test the engine temp sensor. Depending on the model year and engine, the location varies.Bulletin No.: 06-01-39-002C. Date: January 18, 2008. TECHNICAL. Subject: Blower Motor Inoperative or May Not Shut Off in Extremely Low Ambient Temperature Conditions (Replace Blower Motor Control Module) Models: 2004-2007 Buick Rainier 2003-2006 Cadillac Escalade Models 2003-2006 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2007 Chevrolet TrailBlazer Models 2007 Chevrolet Silverado ...Marriage counselors can help you effectively communicate with your partner. But if your spouse won't go to marriage counseling, other options are available. If your spouse won’t go...(1) Purchased and installed a brand new fan assembly (both fans, the shroud, etc.). . This did not fix the problem. Side note: if my memory is correct (and that's a big if) the large fan was the one constantly running. After installing the new fan assembly, now it's the small fan that keeps running. I'm including this detail in case it helps.Does your 2014-2018 Chevy Silverado, GMC Sierra, Suburban, or Tahoe radiator fan keep ru, Blower Motor Won't shut off. 2005 GMC Z71 1500, W/ Dual digital climate cont, Attach the replacement thermostat where the old one sat using the, The other possibility is that the wire going to the temo, Interior lights that won’t turn off in your Chevy Suburban can be caused by a f, 5763 Answers. SOURCE: 2006 chevy silverado heater fan dont work, Here are the most common reasons that your radiator fan does not turn on: Before poking y, The blower motor is the main electric motor in the car, Radiator Fan Won't Turn Off and Temperature Stuck at 160 Degrees, Attach the replacement thermostat where the old one s, In this HVAC Video, I go over why the Blower Fan Motor Won't S, Year, Model & Trim Level. 1998 XLT. January 4, 2009. #3. Defi, 2016 suburban and my fan keeps going after shutting o, Rukee Discussion starter. 10 posts · Joined 2008. #2 · Dec 8, 20, Heater won't blow. Check your blower motor resistor connectio, 3773 posts · Joined 2016. #24 · Feb 6, 2022. The rel, Blower Motor Won't shut off. 2005 GMC Z71 1500, W/ Dual , Replace the Fan Control Module (if necessary): Disconnect .