2014 chevy traverse temp gauge and ac not working

Jul 04, 2024
Oct 8, 2018 · I have a 2014 Traverse with 63,000 miles. My engine temperature gauge intermittently stops working (bottoms out, doesn't move) and along with that, the A/C shuts off. The problem is very intermittent. Sometimes it is when I start the car and at various times during a drive..

If sustained reading, check cooling fan, coolant level, reduce load, AC, turn on heater. Amber 2 - 235 - 242, pointer is also responsive, do not delay investigate cause of higher temps. Red - 250 - 265F, Pull over, shut down engine, inspect cooling system. No indicators from dash or ECM when it hit 250F.My 2019 Traverse had a setting to turn off the "automatic" part of the heated seat. This 2022 retro fitted Traverse does not have this setting. My dealer said to call Chevrolet Service at 800-222-1020 and talk to them. They had no answer for this issue. Everyone with this issue should call them.The 2012 through 2015 model-year Chevy Traverse is among the top 10 vehicles most likely to have A/C problems, per a new post from Consumer Reports. The 2012 through 2015 model years are known to ...Fan Control. Controls the speed of air delivered through the system vents. If your vehicle has Fan Up/Down buttons, then pressing the larger fan button increases fan speed; pressing the smaller fan button decreases fan speed. If your vehicle has a Fan knob, then turning the knob counterclockwise will decrease the fan speed and turning clockwise ...Low Refrigerant Levels and Leaks. If you notice your Chevy Traverse AC light blinking, it could be due to low refrigerant levels or leaks in the system. A lack of refrigerant can lead to poor performance or even damage to your air conditioning unit. To maintain proper performance and avoid costly repairs, make sure to check your refrigerant ...How to fix the issue on fans high , no ac , no temperature gauge , check engine light on Thanks !Like , Subscribe, Follow JG Innovation Garage LLC FacebookIn today’s rapidly evolving technological landscape, the demand for precision and efficiency has become paramount in various industries. One such tool that has revolutionized the w...Ok hopefully someone has had this issue. Driving home from work today the truck was fine. Ate dinner, went back out to run an errand and truck starts perfectly normal. Look down and cluster has lit up because headlights are on but none of the gauges have moved and the prndl screen is blank along with the dic.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.The 2014 Chevrolet Traverse has 1 problems reported for a/c stopped working. Average repair cost is $1,200 at 42,400 miles.Electrical issues with the compressor, such as improper compressor voltage or sensor faults, can also cause flashing. Defective pressure switches, whether on the high or low side, or a faulty evaporator pressure sensor, are potential culprits as well. The blinking of the A/C light could be a result of a blown fuse, bad wiring to the clutch, or ...1 in the rear- and the rest in the front. Inside the dash. 2 are visible when you open the glove box. 2023 Traverse LT 3.6L 15,000. 2013 Equinox 3.6L 121,000. 2003 Trailblazer 4.2L 188,000. 2010 Traverse 3.6L 193,000. This is an older thread, you may not receive a response, and could be reviving an old thread.On Wednesday I noticed my car's temp gauge reading at bottom while driving down the highway. The air conditioner was also non-functional. Each of these components were working fine the day before. The car continued operation, and I was able to drive it to a mechanic later that day.Conclusion. The Chevy Traverse has been known to have air conditioning problems, especially in the 2014 model. Some common issues include the AC not blowing cold air, the AC compressor not engaging, and strange noises coming from the AC unit. If you are having any of these problems with your Traverse, it is recommended that you take it to a ...The 2012 Chevrolet Traverse has 3 problems reported for a/c not working properly. Average repair cost is $410 at 91,400 miles. ... At 59,346 the air conditioning quit blowing cold air. I had to ...C. Croberts26 Discussion starter. 4 posts · Joined 2018. #1 · Jul 16, 2018. I have a 2012 Traverse and all the power windows stopped working after I hooked up a trailer. I replaced the right rear parking light fuse and the BCK/UP/STOP fuse in the fuse box under the glove box and power windows are still not working. I can hear it clicking.Dual climate control not working and fan is stuck on high. We have a 2018 Chevrolet Traverse High Country. We noticed this issue today when we got in our car and started it. The blower fan was on high and no temperature was being displayed on the dual climate control. I cannot adjust the temperature on both the driver side or passenger side.13115 posts · Joined 2008. #13 · Sep 24, 2013. maybe the garmin plug adapter--- somehow putting feedback into the electrical system- causing the hiccup.... thinking out loud. 2023 Traverse LT 3.6L 15,000. 2013 Equinox 3.6L 121,000. 2003 Trailblazer 4.2L 188,000. 2010 Traverse 3.6L 193,000. D.TravvySavvy. 5 posts · Joined 2013. #3 · Aug 30, 2013. I just started having A/C problems with my 2010/20,000 mile Traverse yesterday. It was a hot day (mid-80s) and about 45 minutes into a 90 minute trip, the air coming into the cabin started warming up, to the point where it was only blowing slightly cool air.1663 posts · Joined 2010. #4 · Apr 14, 2015. sparkydave said: According to the owner's manual, the A/C won't turn on below 40 degrees. Not that long ago, the defroster was working fine and I could hear the compressor and cooling fans kick in. Today it was up to 68, and for yucks I checked on the A/C, but the light just blinks 3 times and ...When I start the truck, the needles all sweep to the left and go back. Temp goes back to 180 for a few seconds. About the time the flashing airbag light goes off, the gauge goes back down to 160. In my mind (which is a scary though) the temp sensor and the stepper motors are working properly.Note: Dirty cabin air filter mostly only leads to reduced cooling. If only hot air comes out of the air vents in your Malibu, then the problem probably lies somewhere else. 2. Dirty or clogged condenser. Like the radiator, the air conditioning condenser on Chevy Malibu sits at the front of the vehicle and is responsible for releasing the heat from the refrigerant into the ambient air.Confirmed diagnostics indicate that when this happens it is related to the cooling system, in 1 of 2 items - either the coolant temp sensor or a failed thermostat. The symptoms include the steering error, the AC not working, the temp gauge pegged on "C" cold, and the thermostatic fan in front of the radiator running full tilt at high speed.Just tested my 2010 1LT- (manual AC) I can control the rear from the front. My controls in the front- will change the vents settings from overhead, to overhead+feet, to feet only in the rear. I can also control the fans speed. I can control the air temp (hot/cold) and AC on or off. 2023 Traverse LT 3.6L 15,000.Driving while overheating can cause long term engine damage. 2. White Smoke. If your Traverse's engine gets hot enough, the coolant will begin to boil over and manifest itself as steam coming up from under the hood. It does this to relieve the pressure on the cooling system before lasting damage can occur. 3.Normal temperature on the gauge is a touch over the center mark. This is where my needle stay when fully warmed. I have a 2017 but it is the same. Traverse 2017, chevy Uplander 2009 LT short wheelbase, Impala 2003, jeep cherokee Laredo 1990, chevy citation 1984 2.8 v6, vauxhall Firenza1972, rambler american 1964 model 330, vauxhall velox 1956 ...CEL will aways be on when key is on and engine is not running. It's possible you have a crank relay acting up. Look at the fuse box diagram in your owners manual (Vehicle Care chapter - around pg 292). Find the Rear Window Defogger relay and the Crank (Ignition) Relay.Traverse: Overheating When Idling Causes and Solutions. 1. Low Coolant. While it seems counter intuitive, when your Traverse is low on coolant may run ok with wind hitting the radiator, but when idling there’s just not enough coolant to properly cool the engine. Solution: Fill the radiator and coolant reservoir back up.in newer cars- you DONT want to remove the thermostat-- as the computer will think the engine is running cold and run rich and also set check engine codes. 2023 Traverse LT 3.6L 15,000. 2013 Equinox 3.6L 121,000. 2003 Trailblazer 4.2L 188,000. 2010 Traverse 3.6L 193,000.Faulty Compressor. A faulty compressor will not move the refrigerant through the system properly. Here are the four main reasons why your Traverse’s may not be working: Clutch Cycling Switch – AC systems use an electromagnetic clutch to activate the compressor. When this switch fails, your air conditioning will only blow warm air.Fuel Gauge Operation. September 18, 2014. There may be some questions from owners about fuel gauge operation on 2013-2015 Acadia, Enclave and Traverse models. (Fig. 12) The fuel gauge will read full when there is 19.8-21.8 gallons (75-82.5 L) in the fuel tank. When the fuel tank is more than 15 percent full, the ECM uses the signal circuit ...30 posts · Joined 2018. #1 · Jul 26, 2018 (Edited by Moderator) The rear ac does not blow cold. Ac pressures within spec. The rear temp door/actuator operates properly. At 90 degrees outside, a thermometer in the front middle left air vent air blows at 51.6 degrees (within gm spec). The rear left air vent blows at 77.7 (out of gm spec).How to fix the issue on fans high , no ac , no temperature gauge , check engine light on Thanks !Like , Subscribe, Follow JG Innovation Garage LLC FacebookThe solution is a replacement DIC. Takes about 15 minutes to switch out. You can get it serviced online for $100-200 . and you get back your unit with your mileage. Or a new one at a dealer for hundreds + labour. In my case I was able to get a low cost replacement with similar miles.sbehme88 Discussion starter. 4 posts · Joined 2019. #1 · Mar 31, 2019. I have a 2009 Traverse FWD, and I keep getting the "Engine Hot AC Off" code popping up. Everything I've found to this point indicates a problem in the cooling system, but the problem is that I'm running out of fixes. I've changed out the temperature sensor, the water pump ...1626 posts · Joined 2018. #3 · May 26, 2021. From the front controls: Push the rear button. One of the dials should say rear at the top. Press the zone you would like air to come out of. Adjust the fan speed as desired. After a couple seconds of no buttons being pressed, it should return to the normal readouts.dave00. 397 posts · Joined 2011. #4 · Jul 15, 2015. Had ours in a couple of years ago for no AC at 20K. Turned out to be a faulty condenser as it had a leak and replaced/recharged under warranty. So far no more issues and over 54K on the clock now. 2012 Traverse - LTZ (White) 2013 BMW X5M.159 posts · Joined 2012. #1 · Jan 24, 2016. 2011 Chevy Traverse issue with both headlights not working (worked last night). I played around with the knob switching from manual to auto, but could not get them to turn on. A little back story first: About a month ago, one of the lowbeam headlight bulbs burned out (took my wife a few days to tell ...In today’s fast-paced and competitive job market, many individuals are turning to employment temp agencies for help in finding temporary work. These agencies act as a bridge betwee...Keeping the DIC clean can prevent dirt, debris, and moisture from causing damage or interference. Use a microfiber cloth and a gentle cleaning solution for electronic screens to clean the DIC display. Avoid using abrasive or harsh cleaners, as they can damage the display. 04. Avoiding Common Causes of DIC Damage.The computer controls the fan (s) and the compressor. Disconnect the fans 12 volt connector somewhere on the fan shroud, connect 12 volts to the connector going to the fans. This will eliminate the fans,one way or another. Pull the compressor relay, locate the "always" hot IE: 12 volts, terminal. This can be found with a digital volt meter at ...2016 temp gauge not working and fans running high speed. Jasper2307; Feb 7, 2024; Engine & Drivetrain; 2 3 4. Replies 35 Views 6K. Mar 18, 2024. Jonmurphy. J. S. Radiator Fan stuck on Hi and A/C not working after batter disconnected 2014 Tahoe - Not Temp Sensor or Thermostat. Stock-ish; Mar 23, 2024; Engine & Drivetrain ... 03 Chevy Tahoe ...My engine temp gauge won't rise above 160, it causes the A/C not to work and the fan to stay on after killing the - Answered by a verified Chevy Mechanic ... Engine Coolant Sensor on 2014 Chevrolet Traverse. No codes have been triggered. Mechanic's Assistant: ... Car went in for a power steering pump and tierod and came back to me with the ac ...Loss of cooling efficiency. Ice buildup on the air conditioning components. 9. Electrical Problems. Electrical problems can manifest in various ways in your 2014 Chevy Traverse’s air conditioner. From issues with the controls to failed components, electrical problems can disrupt the entire AC system.The most common reason for a coolant temperature gauge not working is a problem with the coolant temperature sensor. Signs of a bad sensor include black smoke in the exhaust, a car...Jan 5, 2016 · The AC system will simply read the ambient and cabin temperature sensors data and continuously cycle the AC system on and off as required to keep the cabin cool. When the ambient temperature sensor fails, the system does not have a reference point from which to base it’s automatic calculations and the setting will not work. 2. Inconsistent ...4259 posts · Joined 2017. #20 · Jan 3, 2024. Most likely a bad T-stat, I would replace T-sat and temp sensor, about $100 in genuine GM parts. 2017 Colorado ZR2, Deepwood Green Metallic Ext Cab (LGZ) Nitro 4.10's. 33" Falken Wildpeaks. GMPP splined half shafts. 589Fab skid support, shock relocation, steel drive shaft, bed supports.If your Chevy Cruze 2011 has the AC off due to high engine temp, there are a few things you can do to troubleshoot the issue. First, check the coolant level and make sure it is full. If it is low, add coolant and see if that fixes the problem. If not, then it's time to take your car to a mechanic and have them take a look at it.Aug 17, 2020 · 5 posts · Joined 2020. #5 · Aug 19, 2020. I just had similar issue with my 2015 traverse. It was the coolant sensor but it gave an engine code that they were able to read. About $150 to replace at local garage, part was $47. I didn't have an engine hot message, just noticed my fan was running after I turned off the car and the ac was running ...For the past month I've had my 2015 Chevy Cruze LT 1.4 L Turbo overheating. "AC off due to high engine temp" and "Engine temp too high. Idle engine" messages appear. I have replaced the thermostat, water pump, serpentine belt, bled the coolant lines numerous times, and disconnected the battery. The fan runs fine.Chevrolet Customer Svc. 1663 posts · Joined 2010. #3 · Jun 27, 2016. mjlabs said: I have a 2013 Traverse and the rear vents are not blowing any air-everything in the front is OK. I removed the passenger rear panel, exposing the rear blower motor and I can hear it running, but nothing coming out of the vents.9 posts · Joined 2011. #1 · Jul 22, 2011 (Edited) I went to drive my 08 Malibu and turned on the A/C as it's about 100 everywhere and it's blowing hot air. I noticed that the temp gauge was on Cold with the needle not moving, though the car was warmed up. I cut the car off and restarted and the needle went uo to Hot and came back down like it ...2010 traverse AC does not work on passenger side. vents manually closed or actuator stuck. run the system thru all the modes heat defrost ac vent etc. I have a 2009 Chevrolet Traverse. The air is does not flow out of the defroster position. I hear the air blowing but it does not come out of the top of the dash board.temp gauge occasionally reads cold when car is in use.can hear cooling fan running when this happens | Find answers to your 2014 Chevrolet Traverse... 2014 Chevrolet Traverse - temp gauge sometimes doesnt go up1663 posts · Joined 2010. #4 · Apr 14, 2015. sparkydave said: According to the owner's manual, the A/C won't turn on below 40 degrees. Not that long ago, the defroster was working fine and I could hear the compressor and cooling fans kick in. Today it was up to 68, and for yucks I checked on the A/C, but the light just blinks 3 times and ...Here's how: 1.) Click on your Avatar/icon at top-right, go into " Account Settings ", then " Vehicle Details " and enter something like the following: 2011 Equinox 1LT V6 3.0L FWD 170.5k miles. That's my Nox: year, make, model, trim, engine, front-wheel drive (or all-wheel drive), and current miles on the odometer.1 post · Joined 2021. #1 · Mar 31, 2021. While driving 2015 traverse the temp gauge has started jumping around a lot. It will run at the middle 210 mark then instantly drop to the 170-180 area, and then a few seconds later back up to 210. The wife said she was parked for about 15 minutes and when she started it up the coolant fan was running ...08 trailblazer temp gage issue. Recently bought the 2008 trailblazer with only 90000 miles on it I put a new AC compressor a new high and low pressure switch on it and cannot get the compressor to kick on in the inside the temperature gauge never worked since I bought the truck really. It's throwing a check engine code that the coolant is too ...Possibly but it should not affect the fan I would check the temp sensor first and relay or fan module. Ask Your Own Chevy Question. the gauge goes down exactly when it stops blowing cold not slow in going down everything i told you happens all at one time like a short. Chevy Mechanic: CaseyA925.rsingl. 4272 posts · Joined 2007. #2 · May 16, 2021. Most likely a thermostat stuck open. If the thermostat is stuck open, the engine temperature won't rise as quickly as expected and the ECM will go into protect mode because the lack of indicated normal temperature rise could also be from a bad sending unit.The most common causes for AC not cooling properly in Chevy Traverse are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. Less common causes are clogged expansion valve or orifice tube, overcharged oil, faulty blend door ...on August 08, 2016. When driving, occasionally all the dash lights will come on, but the gauges like gas, battery, and mileage, will all drop down to zero. Then my radio shuts off. Fortunately, the car keeps driving. All of this happened today, at a busy intersection, right before a stop light.Well they did stop working when the weather was cool. THen one day when it was 87 degrees or so-- the speakers started working again. So I just ordered new speakers from Crutchfield. I installed the speakers and its been working fine. Just odd they all started to fail at the same time. 2023 Traverse LT 3.6L 24,000.The temperature gauge on my 2014 Traverse LS ranges from 160 to 260, with the usual operating temperature being right in the middle at 210. Once every few days, as I am driving around town, the temperature gauge will drop all the way down to 160, the heater will not get as hot (nor will the AC will not work) and the engine fan kicks on at full speed.2011 Chevy Traverse LS with 160k miles. So last night we had the first rain/snow in maybe 3 months (always dry in Denver area). It was a rain/sleet/snow mix and we needed the defrost. Unfortunately, with defrost on, we could not get air to blow out of the window vents. We were able to get hot air without any problem, just no blowing on the ...When it comes to midsize SUVs, the Ford Explorer and Chevy Traverse are two popular choices among consumers. Both vehicles offer spacious interiors, powerful engines, and a host of...Gauges drop..won't start crazy multiple things. Gonna give a fast brief story here.2010 84000 miles. First thing I love my car 8 passenger rides great. 1st. One day out of the blue the radio, Blinker, leaving key in sound, reverse back up sound all stopped. Radio has nothing.Hard Reset - Disconnect both battery cables. Touch the cable ends. together (away from the battery) for 15 seconds. Reconnect the cables. Positive Cable First to avoid any voltage spikes. Touching the cables together drains the reserve voltage in the Module. Capacitors causing the Modules to reset and re-establish.2 posts · Joined 2014. #1 · Aug 26, 2014. First of all I appreciate anyones time to reply. I have a 2011 Traverse with 45000 miles. Shortly after the bumper to bumper warranty was over, the rear system will not blow air (hot or cold). I pretty much have done all my own mechanic work over the years (brakes,heads,exhausts, bearings etc ...Keeping the DIC clean can prevent dirt, debris, and moisture from causing damage or interference. Use a microfiber cloth and a gentle cleaning solution for electronic screens to clean the DIC display. Avoid using abrasive or harsh cleaners, as they can damage the display. 04. Avoiding Common Causes of DIC Damage.The 2012 Chevrolet Traverse has 3 problems reported for a/c not working properly. Average repair cost is $410 at 91,400 miles. ... At 59,346 the air conditioning quit blowing cold air. I had to ...1 in the rear- and the rest in the front. Inside the dash. 2 are visible when you open the glove box. 2023 Traverse LT 3.6L 15,000. 2013 Equinox 3.6L 121,000. 2003 Trailblazer 4.2L 188,000. 2010 Traverse 3.6L 193,000. This is an older thread, you may not receive a response, and could be reviving an old thread.If not, follow the wire back to the sending unit and unplug it. Turn the ignition key to the run position, then ground the lead on the gauge wire and see if the gauge reacts. If the gauge moves, the issue is probably related to the sending unit or sensor. If the gauge doesn't move, double-check the fuse for the panel or the gauge itself.The most common reasons a 2017 Chevrolet Traverse ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. 0 % 37% of the time it's the

Did you know?

That There are many problems that may cause your gauges and indicator lights to stop working. 1. Blown Fuse. Bad fuses are the most common reason gauges stop working. Fuses help control the electrical currents in your vehicle. A faulty fuse means no current can get to your dashboard gauge and display vital information.

How 1133 posts · Joined 2011. #4 · Apr 12, 2023 (Edited) I believe the A/C compressor should come on even if the fans do not run, it will cut out if the pressure is too high or too low. The blowers are controlled by the HVAC module, fans are controlled by the ECM. Your light blinking 3 times means there is a problem in your system.The most common reasons a Chevrolet Traverse heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. 0 %. 31 % of the time it's the. Heater Blower Motor. 0 %.The most common causes for AC fan blower motor not working in Chevy Traverse are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. 1.Top Answer. Alex S. December 12, 2020. If Your 2014 Chevy Traverse temperature gauge is not working it is usually a problem with the actual temperature …In November I bought a 2010 Traverse with 140,000 miles on it. The car is in excellent condition and appears to have been well maintained. However, in the past week of very cold temperatures the cooling fan is coming on soon after starting the car. It was 23 below zero that morning, so there is no way the motor was over heating in two minutes ...

When My Amazon Affiliate links: Automotive Fuse Set: https://amzn.to/3HbEhyGAC Recharge KIT: https://amzn.to/2VtiuMVDisposable gloves: https://amzn.to/34S9TWlMy A...cateyes2g Discussion starter. 1 post · Joined 2015. #1 · May 7, 2015. We just purchased this Traverse in Feb 2014 and now in April 2015 the AC stops working. I am being told it's outside the warranty as it has 48K miles on it. They quoted me a $279 fee just to look at it.New Alternator/ Battery. July 2021 it went into power save mode and 10 min later shut down and would not restart. Battery was good when checked so we changed the Alternator. When new alternator was installed the A/C on the Drivers side would not work, we changed the Actuator. That seemed to do the trick for a week or so.…

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mego museum forums 1 Electrical System problem of the 2021 Chevrolet Traverse. The contact owns a 2021 Chevrolet Traverse. The contact stated while driving 55 mph, the vehicle inadvertently lost motive power. The driver was able to pull to the shoulder of the roadway, where the vehicle failed to restart. The service battery warning light was illuminated. dr lynette nusbacher biofarming tera shards I can't recall my 1st gen running the engine fan often unless the AC was on or it was climbing lots of hills. The 2nd gen runs a lower engine temp, and runs the fan more. Anyway, yes, the radiator temp sensor is the one that commands the fan to come on around 230F coolant temperature. 2016 Cruze Premier RS. Like.1 post · Joined 2022. #1 · Feb 5, 2022 (Edited) Hi I changed the Front AC Evaporator to my Chevrolet Traverse 2011 one year back. After that, my front AC hot air is not flowing even though I keep the AC switch from Blue to RED. Cold air is still working fine.But when kept in Red button also Cold air is blowing (I feel like when in Red seems ... bswhealth peopleplacerabobank arena seating chart with seat numbersinstacart fsa promo In November I bought a 2010 Traverse with 140,000 miles on it. The car is in excellent condition and appears to have been well maintained. However, in the past week of very cold temperatures the cooling fan is coming on soon after starting the car. It was 23 below zero that morning, so there is no way the motor was over heating in two minutes ...This condition may be caused by the P111E diagnostic calibration inadvertently causing the DTC to set under certain ambient conditions. Inspect the terminals at the coolant temperature sensor for loose terminal tension and ensure that the connector is properly seated. Update the Engine Control Module (ECM) with the latest calibration. houses for sale under dollar200k in valdosta georgia All the people with the problem on this string say the temp gauge does not work at all when this problem occurs. ... car warm up then its stays on cold engine too high temp warnin an fans come on unplug negative battery end an its working fine chevy camaro 2014 did anyone find out if it was due to thermostat. 1 people found this helpful. …The heater may stop working in Chevy Cruze 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 system ... courier express independent contractor reviewssection 113 citizens bank parkchristine williamson body 1. Turn the engine OFF. Caution: Refer to Battery Disconnect Caution. 2. Disconnect the negative battery terminal. 3. Drain coolant below the level of the engine coolant temperature (ECT) sensor. Refer to Cooling System Draining and Filling (LL8) Cooling System Draining and Filling (LH6, LS2). 4.rsingl. 4272 posts · Joined 2007. #2 · May 16, 2021. Most likely a thermostat stuck open. If the thermostat is stuck open, the engine temperature won't rise as quickly as expected and the ECM will go into protect mode because the lack of indicated normal temperature rise could also be from a bad sending unit.