2015 chevy traverse ac light blinking

Welcome to the ultimate guide to all dashboard symbols, warning lights, errors and faults for the 2009 to 2024 Chevrolet Traverse. This will assist in troubleshooting, diagnosing and solving common automotive problems with this Chevy. Please note: This guide covers every single possible symbol/warning light for ALL model variations for ...

2015 chevy traverse ac light blinking. If the Chevrolet airbag light stays on and won't turn off, the Safety Restraint System ( SRS) has detected a problem with one of the components of the Airbag System. Two possibilities include damaged wires or low voltage. While the airbag light stays on, the SRS system will not function, and no airbag will deploy in case of an accident.

Spartanden. 184 posts · Joined 2020. #2 · Aug 14, 2023. I have red lights on dash by windshield on my 2020. The come on when someone stops suddenly in front of me...as a warning for me to stop!!! Mine signal impending front end collision!

Traverse A/C Recharge. Let's say we repair your 2012 Chevrolet Traverse A/C system. We will also perform an A/C evacuation and recharge. During this process, a technician will remove the old refrigerant from the A/C system. Then, they'll perform an evacuation (also known as a discharge) on the entire system per Chevrolet guidelines.21 posts · Joined 2018. #1 · May 3, 2019. 13 traverse LS. Overheats with AC on and idleling. While driving i dont have overheating issues. Also temp goes up to 250+ if i idle for about 20min. (No ac/heat). If i turn the heat on it does bring it down to 230. This just started happening today.I have a 2010 Chevy traverse. When I press the snowflake button to engage the AC it blinks 3 times and then goes off so the AC war not turn on. I have done much research and even when as far as replacing the ambient temperature sensor which I could only find one of. This is our family vehicle so any help would be greatly appreciated. Like.1663 posts · Joined 2010. #6 · Jun 3, 2015. dkurk said: My 2010 is air conditioner is not working. It has been serviced and so far 5 compressors have blown out. New condenser, and all the parts required for repair have been replaced. Getting ready for the 6th compressor but in the past it blows out the same day it has been put in.6 CYL. AWD. AUTOMATIC. 65,000 MILES. A/c light blinks 3 times. Outside temp currently 88 degrees. Tried putting it in Auto climate control and also front vent manual, none of the configs work but worked just fine in the fall prior to winter. The only thing that has happened under the hood of the car since then was an oil change at Valvoline and ...400 posts · Joined 2011. #4 · Mar 19, 2019. They're talking about a 3 prong 110v plug and in the traverse there is only one located at the rear of the center console under the rear air controls. There are other 110v outlets in the traverse, but they are all the cigarette lighter plug style. 2012 Traverse - LTZ (White)Apr 9, 2015 · Pearly 2015 LT. 1 post · Joined 2021. #10 · Apr 17, 2021. Temp sensor was replaced on my 2015 Traverse LT. Noticed the temp guage would dip, a/c blowing warm air, and fan was running loudly to cool. Finally, check engine light came on. Everything back to normal, will check back if I have any issues. Oil Change Store fixed for $200.00.Ok, so if the AC light is blinking 3 times it certain that my compressor is not going to run. If the compressor is not running then I am not going to get a good reading on the refrigerant level, or be able to fill the system. Anyone know the trick to get the compressor to spin? Maybe jump the relay?

To reset the oil change light on a 2015 Traverse, follow these steps: 1. Turn the key to the "on" position without starting the engine. 2. Locate the "OIL LIFE" display. 3. Press and hold the "TRIP RESET" button until the display shows "Oil Life Reset. " 4.M. mrcoffee Discussion starter. 12 posts · Joined 2014. #1 · Jun 17, 2014. yes could anyone tell me why exactly that there is 2 settings for the a/c one is an amber light and one is a green light and to me they both do the same thing...so just wondering why we have these multiple settings...thanks for any info. Like.Make sure the car had cooled down. I think the radiator cap is located under a shroud carefully open the cap. Start the car with the cap off and give it some time to get up to temp. When the thermostat opens up you should see the coolant level drop. You can then watch the coolant flow by in the radiator.Jan 25, 2015 · 2009 chevy traverse engine light flashs only over 25mph. A flashing check engine light means that you have an engine misfire, You need to have the fault codes read with a code reader or scan tool. Many auto parts stores do this test for free (except Calif.) Ihave a 2011 equinox. The ac panel stoped working.5. Coolant Leak. If your AC light is blinking, it could be because there is a problem with the car's cooling system. This can cause the AC compressor to overheat, which will turn on the AC light. If you think there might be a coolant leak, you should take your car to a mechanic to get it fixed. 6.Models & Specs. 3. Lorena S July 16, 2020. To reset the check engine light in your 2015 Chevy traverse vehicle, try disconnecting the battery cables for 10-15 minutes and then reconnecting them, or turn your ignition key to the "on" and then "off" position twice, followed by starting the engine and the light should disappear. Like.The part is about $35-45 on ebay/amazon. do a search for rear actuator. It involved removing the rear inner panel. Someone has done it on their Traverse or Acadia. 2023 Traverse LT 3.6L 24,000. 2013 Equinox 3.6L 125,000. 2003 Trailblazer 4.2L 188,000. 2010 Traverse 3.6L 193,000. E.

It seems that once my wife's 2015 Traverse had 1 issue, it multiplied! When driving, the temp gauge will drop to Zero (No codes in memory and no leaks detected). A/C quits and you have to stop shut off and restart vehicle to get any results. The Stealership wants to tell me that it is a result of low Freon in the rear a/c causing the issue.Cleaned oil residue out of Throttle body, TC lit Intermittently (mis-information as cause of TC light on) 10. By Cleaning the Mass air flow sensor/tube, and cleaning the Throttle Body, did help Throttle position sensor do a ECM self learning. fuel/air ratio adjustment. 11. After doing a good cleaning.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. ... is the AC light on the button blinking 3 times? 2023 Traverse LT 3.6L 15,000 ... A forum community dedicated to Chevy Traverse owners and enthusiasts. Come join the discussion about ...A faulty compressor clutch or electrical connections can also cause the A/C light blinking issue in your Chevy Traverse. Start by inspecting the compressor clutch for signs of wear, damage, or overheating. Next, check all electrical connections leading to the compressor and make sure they are clean and secure. Loose or damaged wires may …

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To diagnose the issue with your Chevrolet Traverse AC, start the engine and turn the A/C on maximum. Ensure the fan is on its highest setting and the temperature is at its coldest setting. Look to see if the A/C compressor is running. Pop the hood and locate the compressor. Use the A/C Pro® gauge to check the pressure.That is why you get the flashing light. The ac system KNOWS it is cold outside due to available pressure in the system. Cold weather, low pressure, the pressure switch does not close and the compressor does not come on and you get the flashing light. ... 1972 Chevy Cheyanne "402" Big Block" 1974 Ford Rancharo 1983 Chevy S10 Ext. Cab 4x4 1986 ...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. ... is the AC light on the button blinking 3 times? 2023 Traverse LT 3.6L 15,000 ... A forum community dedicated to Chevy Traverse owners and enthusiasts. Come join the discussion about ...Our 2012 GMC Acadia: AC light blinks 3 times then goes off. Freon is fully charged. Coolant level is full. I see this issue on forums and have tried every idea to no avail. ... The snowflake light flashes 3 times and does nothing when trying to turn on ac on 2011 chevy tahoe, previously passenger side would just blow cold and no heat, ...The check engine light remains on, which is probably not a surprise if there's a faulty sensor. ... 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. Save Share. Like. D. dsayed Discussion starter ... 2015 Acadia SLT-1 2021 Acura RDX A-Spec 2016 Mustang GT 1995 Trans Am - 383 stroker.I have a 2021 Traverse with about 39,000 miles on it. I recently had the check engine light come on about two weeks ago, but thought it was due to a needed oil change since oil life dropped below 10%. I changed the oil/filter last weekend, but the engine light didn't go away. I haven't noticed any issues or changes with the vehicle.

A blinking SMS message grabs your recipient's attention almost immediately by landing and blinking on his cell phone screen instead of in his phone's SMS inbox. You can either blin...The ac light in my 2015 Traverse blinks 6 minutes times when I turn it on and then will blow hot air. ... 2012 Chevy traverse, the air conditioner is not blowing out of all of the vents in front. Blows cold for about 15 minutes and then still blows cool but not cold. Could it be the cabin filter?63 posts · Joined 2010. #4 · Nov 10, 2015. Update. Took the Traverse into Chevrolet Montabello on Monday. 1) air bag service light. They say it needs a new battery, car battery. $230 2) Brake service light, stabilitrac off light, traction control off light. The master cylinder was leaking into brake booster.Hopefully I won't have to drive with paparazzi any longer. >:- (. - jblayze83 , Kinston, NC, US. Maximize. The 2015 Chevrolet Tahoe has 15 problems reported for interior lights flashing. Average ...Only way to get it to turn off is to move the control which controls where the airflow goes. Or drive for a while. The manual states when you shut the vehicle off the recirc mode turns off and must be pressed to be turned on again. Mine is on when I restart and then this problem occurs.Rear Ac Not Working Chevy Traverse. For Chevy Traverse owners facing rear AC issues, power supply, compressor clutch engagement, system leaks, or a malfunctioning climate control panel could be culprits. A professional diagnosis, often involving pressure tests and meticulous inspections, is the key to restoring cool harmony. Chrysler Town And ...May 20, 2023 · 1. Loose or bad gas cap. It is possible for the check engine light to come on in Traverse due to a loose or bad gas cap. The fuel system in modern vehicles is designed to maintain a certain level of pressure, and if the gas cap is not sealing properly, it can cause a leak and disrupt the pressure balance in the system.Air condition seats not working and ac light blinking and blowing warm air. ... 2012 Chevrolet Traverse Estimates. Cabin Air Filter Replacement ($61 - $104) in Canoga Park, CA. Ignition Switch Replacement ($119 - $141) in Robertsdale, AL. Blower Motor Replacement ($290 - $300) in St. Paul, MN. Find a Shop. Chevrolet Repair in Windsor, NY;

SOURCE: The AC button light blinks on and off. AC won't. When the light is blinking that means there is a code in the system you will have to take it to a shop and have the codes read. Sometimes "Jiffy Lube" or "Rapid Oil Change" can read the code for but they won't fix it. If the blower motor only runs on high, the blower motor resistor is bad.

Below is a list of the most common reasons your check engine light can come on: New Spark Plugs or Plug Wires are needed for your 2015 Chevy Traverse. The spark plugs are the part of your engine that ignites the air/fuel mixture in the combustion chamber of your car. This explosion is what moves the pistons and makes the engine run smooth.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 ...Cleaned oil residue out of Throttle body, TC lit Intermittently (mis-information as cause of TC light on) 10. By Cleaning the Mass air flow sensor/tube, and cleaning the Throttle Body, did help Throttle position sensor do a ECM self learning. fuel/air ratio adjustment. 11. After doing a good cleaning.If your check engine light is flashing in your 2016 Chevy Traverse, we tremendously suggest not to drive the car and schedule Chevy service today. Below is a list of the most common reasons your check engine light can come on: Your O2 Sensor (Oxygen Sensor) needs to be replaced. The Oxygen sensor, known as the O2 sensor, measures the amount of ...I have a 2011 Chevy Traverse LS trim. Manual TPMS reset sensor matching process (No tool required.) 1. Set the parking brake. 2. Turn the ignition to ON/RUN with the engine off. 3. Press the Remote Keyless Entry (RKE) transmitter's LOCK and UNLOCK buttons at the same time for approximately five seconds. The horn sounds twice to signal the receiverMar 12, 2020 · Ok, so if the AC light is blinking 3 times it certain that my compressor is not going to run. If the compressor is not running then I am not going to get a good reading on the refrigerant level, or be able to fill the system. Anyone know the trick to get the compressor to spin? Maybe jump the relay?STEP 2: FIND A TIRE LEAK USING SOAP AND WATER. To locate the potential air leak in your Chevy Traverse tire proceed as follows: ESSENTIALS: Either an air compressor or a portable air pump, a sprayer bottle, some water, and …

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Make sure the Tire Pressure info page option is turned on. The info pages on the DIC can be turned on and off through the Options menu. Use the DIC controls on the right side of the steering wheel to scroll to the Tire Pressure screen under the DIC info page. Press and hold in the center of the DIC controls.With the smoke it could be a coolant issue as well. Once it's cooled off, please check the coolant level as well. Experience: 25 years automotive experience, Certified Subaru Tech and Nissan factory trained. Engine oil and all others are full. It seems that as soon as the traction control light came on,it started smoking and misfiring. It's the ...Sep 18, 2020 · I have a 2012 traverse and my air conditioning is not working. The light on the snowflake button on the control panel blinks 3 times and then turns off. The fan blows but the air doesn’t cool. I borrowed a scanner and I’m getting Code B0228-04 but I can’t figure out what it’s referring to. Any ideas?J. JimboDan. 1 post · Joined 2018. #12 · Mar 27, 2018. Here's my scoop on 2011 Traverse: I was taking a severely circular on-ramp to the NJ Turnpike when bells started ringing and the messages came on "Traction Control Off" "Service Brake System". Parking Brake light went on too. All went off after about a minute or so.I have a 2015 Chevy traverse the ac light just recently started blinking 3 times and then would shut off. The air blows but not cold air and the ac cooling of the seats don't work either. Tags: chevrolet, traverseThe combustion process in your Chevrolet Suburban's engine is a finely orchestrated dance of various components, and when something goes awry, the result can be a flashing check engine light. One of the most frequent culprits behind this unsettling warning is an engine misfire, which can stem from a range of issues.Here is what you do. Turn on the key. The security light will begin to flash. Wait (about 10 minutes) with the key in the ON position. The security light will stop flashing. TURN OFF the key. Then, turn on the key and start the car. Security system is supposed to prevent theft for a 10 minute delay. ….

3 posts · Joined 2018. #1 · Apr 10, 2019. I'm looking for confirmation of WHERE the low side AC port is on the 2015. The one at the top - that i CAN reach - is high side. What I THINK is the low side seems to be in an UNREACHABLE SPOT on the underside behind the radiator, that's dang near impossible to get your hand in between the parts ...December 30, 2022. The AC light blinking message is dreaded issue car owners experience with Chevy Traverse. Usually, the light will blink three times. When the light …Pearly 2015 LT. 1 post · Joined 2021. #10 · Apr 17, 2021. Temp sensor was replaced on my 2015 Traverse LT. Noticed the temp guage would dip, a/c blowing warm air, and fan was running loudly to cool. Finally, check engine light came on. Everything back to normal, will check back if I have any issues. Oil Change Store fixed for $200.00.May 7, 2015 · 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.B. bigbluetraverse. 1780 posts · Joined 2010. #3 · Dec 21, 2011. One bad or failing bulb could cause this. Even one of the bulbs sitting in the connector could cause this. If it was mine I would just buy new bulbs and test them out and re seat them all. But let the dealer look at it is may just be simple.When an engine misfires, one or more of the cylinders doesn't produce the power it should. A misfire can be caused by numerous problems, many of which can also lead to a flashing Check Engine Light. For example, you might be dealing with fouled-out spark plugs, a faulty oxygen sensor or a vacuum leak.If so, they will need to discharge the system and perform the repair. After they will vacuum the system for 30 minutes and recharge it to ensure no moisture is present as this can reduce the a/c systems performance. Ask Your Own Chevy Question. Share this conversation.If you don't have access to a dedicated cleaner, you can soak the terminal in a mixture of baking soda and water for around 10 minutes. 3. Bad Battery (Most Common Cause) A bad (or drained) battery is the most common reason why your Chevy Traverse has flickering dash lights but won't start.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. 2015 chevy traverse ac light blinking, Popular Answer. DaveJM on September 23, 2019. Hello, the light indicates that the air conditioning system is active -- under the hood. The lack of blowing air seems to indicate a problem with the blower in the rear -- either the controls, the power, or the blower motor itself. Testing will be needed to find out what has happened and what needs ..., One possible reason for the AC light blinking six times on a Chevy Traverse is a low refrigerant level, which may indicate a leak in the system. This can …, 2012 Chevrolet Traverse. Asked by ashleyawinters in Greenville, MI on April 09, 2018. My dash lights won't turn on in my 2012 Chevy Traverse. I started my car and nothing would light up. While driving down the road and hitting a bump, the lights come on. Shut car off once at destination and restart and same problem., Models & Specs. 3. Lorena S July 16, 2020. To reset the check engine light in your 2015 Chevy traverse vehicle, try disconnecting the battery cables for 10-15 minutes and then reconnecting them, or turn your ignition key to the "on" and then "off" position twice, followed by starting the engine and the light should disappear. Like., March 23, 2015. it's not because outside air is cold-it's 74 degrees . 1 reply Report. Answer. Popular Answer. ... Recent Chevrolet Traverse Questions. Air condition seats not working and ac light blinking and blowing warm air., One possible reason for the AC light blinking six times on a Chevy Traverse is a low refrigerant level, which may indicate a leak in the system. This can …, About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., Feb 21, 2015 • 2012 Chevrolet Chevrolet Traverse LTZ. 0 helpful. 1 answer. I have a 2009 chevy traverse the ac light is flashing 3 times and then blowing hot air. It's trying to tell you there is a problem an you need to have it checked, DTC - diagnostic trouble code stored in The HVAC control module !, 1705 posts · Joined 2015. #2 · Apr 27, 2019. .02 guess. All depends upon how the brake lights are triggered.....some use a pressure switch in the hydraulic lines, most use a mechanical switch activated by the brake pedal. If pedal is lower than normal, pull up on it and the lights will go out to confirm a mechanical switch, it is not in the ..., Chevy traverse 2011 check engine light flashing then car not starting 8 Answers. started having an issue with our 2011 Chevy traverse at the end of a long road trip. Check engine light started flashing while driving. Pulled over on the side of the road to turn off car and re..., The most common causes for AC blowing hot air in Chevy Traverse 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 ..., The ac light in my 2015 Traverse blinks 6 minutes times when I turn it on and then will blow hot air. ... 2012 Chevy traverse, the air conditioner is not blowing out of all of the vents in front. Blows cold for about 15 minutes and then still blows cool but not cold. Could it be the cabin filter?, 1663 posts · Joined 2010. #6 · Jun 3, 2015. dkurk said: My 2010 is air conditioner is not working. It has been serviced and so far 5 compressors have blown out. New condenser, and all the parts required for repair have been replaced. Getting ready for the 6th compressor but in the past it blows out the same day it has been put in., King0fWelfare • 2 yr. ago. If the a/c light goes out automatically when commanded on, the control unit senses an issue, could be low charge (cause by a leak), compressor won't kick on any more (compressor failure), ambient temperature sensor reads below 32°F (failed ambient sensor), excessive pressure build up (clogged line or condenser)., If voltage goes to the blower motor, it'll need replacing. If there's no voltage, test the resistor (YouTube). 2. AC System Not Blowing Cold Enough. The most common reason for your Chevy Traverse's AC not blowing cold enough is low refrigerant levels, followed by a dirty evaporator or condenser issues (bad or clogged)., The flashing light should go off or illuminate without flashing. When it does, turn the ignition off, wait twenty seconds, and then try to start the engine. If it starts and runs, everything is okay. If you get the same result as previously—nothing happens or the engine starts and dies with the security light flashing—wait ten more minutes., 2010 Chevy Traverse - AC light blinking - A/C leaking failure ... The light blinking three times means that the a/c compressor has been cycling on/off too many times, so in order to save the compressor it shuts down operation. IMHO, this is a great nanny system. ... 2015 Chevrolet Traverse 1Lt Big Skid Media / YouTube. Save Share. Like., 1. Start engine, turn on AC, and see if the compressor drive plate (the center of the compressor) is turning at same speed as the belt and compressor pulley.2. Engine off, put a wrench on the center of the AC compressor drive plate, and see if you can rotate the compressor clockwise., 2010 Chevrolet Traverse. Dealer says it is a hose and that they have to replace the whole thing for $1,700. Car has 60,000 miles, bought it new. (2010 model) We have already had the whole engine replaced under warranty. With all of the a/c issues, it should be a recall or under warranty too., https://amzn.to/3oSx7Jp or https://ebay.us/6piN8t, If you AC is blinking or flashing it could be an easy fix instead of an expensive repair. Try the stuf..., The check engine light remains on, which is probably not a surprise if there's a faulty sensor. ... 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. Save Share. Like. D. dsayed Discussion starter ... 2015 Acadia SLT-1 2021 Acura RDX A-Spec 2016 Mustang GT 1995 Trans Am - 383 stroker., 2. Check continuity in the Light Green wire from the oxygen sensor to the PCM. 3. Place a test light across the two heater circuit wires and use scan tool to command the heater on and see if the test light will illuminate. 4. If all of the above test okay, then replace the oxygen sensor. (I have attached a document(s) to this thread., 36 posts · Joined 2018. #8 · Apr 30, 2018. AC light blinking 3 times - no cool air.*FIXED*. Pulled the switch pn 20915 and ohmed it from the 5v input side to all the pins 89to 100kohmsway to high. Good is like 5.4 ohm you do not have to bleed off the pressure of the system to change the switch., 2010 Saturn Outlook XE 3.6L V6. See all videos for the 2012 Chevrolet Traverse. This free video provides the steps to diagnose and clear a check engine light on a 2010 Chevrolet Traverse LT 3.6L V6. The video also provides steps on how to read the 2010 Chevrolet Traverse LT 3.6L V6 trouble code., Nicole28. 1 post · Joined 2018. #20 · May 18, 2018. I have a 2009 traverse and had issues every year with the AC. Three summers ago, it was not blowing cold air. I had the AC recharged at a shop. $200 later and it still was not "cold". Ended up changing one of the actuators which seemed to help temporarily., I push the button and the snowflake flashes three times and goes off. Compressor not running. Multiple attempts no fix. Once I turned the truck off, opened the door, closed door, restarted and it came right on. Hasn't always worked. Once I turned the entire a/c system off and back on using Auto A/C and the snowflake came on as did the compressor., Read on to grasp a better understanding of your vehicle's air conditioning system, the reasons behind the blinking light, and troubleshooting methods to cool down in no time! air conditioner light blinking chevy traverse. Let's dive into the three crucial aspects of the air conditioner light blinking in Chevy Traverse: 1., The ac light in my 2015 Traverse blinks 6 minutes times when I turn it on and then will blow hot air. A/C light and DOES - Answered by a verified Chevy Mechanic, Needham analyst Chris Pierce reinstates Blink Charging Co (NASDAQ:BLNK) with a Hold. Pierce maintains growth conviction ahead... Indices Commodities Currencies ..., Had an interesting problem and was wondering if anyone has an explanation for it. 2015 Traverse with 145000 klm. Yesterday after when trying to start off from stop sign, the throttle was dead, engine light came on, dash indicated that the traction control and stabilitrak was off and in need of service, after a 10 minute wait with the car turned ..., DTC P0533: Air Conditioning A/C Refrigerant Pressure Sensor Circuit High Voltage. DTC P0645: A/C Clutch Relay Control Circuit. Circuit System Description. When the A/C switch is pressed, the HVAC control module sends a serial data message to the ECM. This input will request the engine control module (ECM) to ground the A/C compressor clutch ..., DTC P0533: Air Conditioning A/C Refrigerant Pressure Sensor Circuit High Voltage. DTC P0645: A/C Clutch Relay Control Circuit. Circuit System Description. When the A/C switch is pressed, the HVAC control module sends a serial data message to the ECM. This input will request the engine control module (ECM) to ground the A/C compressor clutch ..., The light blinking 3 times means that ac request is being inhibited by the ECM. This could be for a number of reasons including something not related to the AC at all or it could have a leak (which would make the pressures out of spec). Throwing parts at it is just wasting money.