Knocking sound in dashboard impala - 4.8L. V8. 2WD. AUTOMATIC. 177,000 MILES. I have this knocking, not a clicking noise, behind or above my glove box. It happens randomly. When I turn the car on or just when I am driving. It doesn't matter if AC or heater is on it is just a random knocking.

 
I replaced all of my 2007 Impala LTZ actuators 2 years ago (well, 3 of the ones in the dash.) Last year the one inside and on the left of the glove box started clicking. (I felt of the dash area as it was clicking, and that was the only area where I felt the clicking.) Today, I replaced the left glove box actuator.. Take 5 car wash huntsville al

Ticking/Knocking Noise. I notice a couple days a go a slight ticking noise coming from the bay (09 Impala LT 3.5L). Yesterday I checked the oil level on the dipstick and it was on the second circle from the bottom of the dipstick (I got a oil change 2 weeks ago from the dealership and notice the oil is dark), so I added 2 quarts of oil.Christina answered 7 years ago. @sackingsgirl06 The actuator will make noise when the electrical system of the car is on (even if no air is flowing). This happens when you unlock the car with the key fob or open the car door. If it is on the right side, then you can access it right behind the glove box and replace it.Impala. 2020. If You hear a clicking noise under the dash of Your Chevy Impala that is most commonly a problem with a component in the HVAC system for the car. It could be a blend door actuator, or the blower motor itself having a problem. There is also a chance that Your air ducts are loose and rattling around which could make a clicking sound.The noise heard and the sluggish A/C may be related. It is fairly common for an air distribution actuator to fail. These actuators change positions of doors in the HVAC (heating, ventilation, air conditioning) distribution housing. Typically, a "thump, thump, thump" noise is heard.The Insider Trading Activity of Knocke R Craig on Markets Insider. Indices Commodities Currencies StocksDorman 604-029 Air Door Actuator - http://amzn.to/2nk0TErIf you've started to hear a continuous clicking/tapping/knocking noise behind the passenger side of ...This is what I found…. The three most common causes of clicking noise from the dashboard are: Heater control module lost calibration. Faulty blend door stepper motor. Relay. In this post, you’ll learn about the most common causes of dash-clicking noise and how to diagnose and fix them.The 2009 Chevrolet Impala has 42 problems reported for noise in the dash. Average repair cost is $330 at 86,900 miles. (Page 1 of 3)Replaced with rebuilt engine $8.5k- same thing happening. Idles in Park or neutral fine. Shift to drive or reverse engine seems to pull hard with foot on brakes, like brakes barley hold it back. Sitting with engine in drive knocking noise from new engine -seems to knock louder with a/c on like engine is loaded up, shift back to N or P she purs!!!Press to turn on the auto button, then again turn off the ignition. Remove the HVAC fuse from its box for one minute. Switch on the ignition. Leave the HVAC system for a few minutes to activate its relearn mode. Restart the car. If the clicking noise in dashboard when starting car disappears, you're good to go.Detonation knock can occur from low octane fuel. Because premium fuel is stable at higher temperatures, it doesn’t cause this problem. Therefore, if your vehicle is supposed to use premium fuel and you downgrade, you may hear this knocking sound. The noise means that the gas is igniting at the wrong time. 2. Bad Knock Sensor …Uellee. 110 posts · Joined 2010. #12 · Jul 27, 2010. I can confirm that my clicking noise is unaffected by any change in HVAC settings. It continues to annoy me only whenever the truck shakes a little bit. It may be something loose in the front of the driver side door or somewhere on the left side under the dash.The 2011 Chevrolet Impala has 12 problems reported for loud ticking noise. Average repair cost is $350 at 76,200 miles. ... I am thinking of cutting the dash and trying to install a pulley system ...Adransoff4. 1 post · Joined 2023. #3 · Jan 22, 2023. Replacing the air inlet actuator ( the one behind the glove box) is possible without removing the dash. Did it last night. You will need to remove the Aux actuator ( passenger side) to have enough room for hands and tools to remove T20 screws on the air inlet actuator. Top screw is a blind ...I bought this 2007 car in 2008 after my NEW Impala was totalled when hit by a drunk driver. I started getting a knocking sound in the dashboard when the air conditioning was on. It was fixed(or so I was told). Then last summer the same thing started again.you have a blend door motor that has stripped gears inside and its trying to work but the teeth on gear are possibly broken or bad motorWhat does it feel like to get a concussion? What are the mental and physical effects of this injury? And how can we best diagnose and treat them in the future? What does it feel li...**I am by far NO MECHANIC, I’m just explaining ways I’VE kept my car running smooth almost 10yrs. Things you should know & that annoying knocking in the das...Loud flapping noise while driving at speeds over 60 mph. While driving at about 70 mph a while back, we encountered a very loud consistent flapping noise. There was no indication that the motor was having issues; no lights on dashboard or other indication. Slowed down and the noise stopped. Personally thought that I had "picked" something up ...Nov 28, 2017 · Support My Channel! Paypal - [email protected] / Cashapp - $cdarnauParts - Actuator - http://amzn.to/2Aep9kbTools -5.5 Socket - http://amzn.to/2jwCLh01/4 Ratch... 4 posts · Joined 2016. #1 · Apr 17, 2016. I've been getting a weird knocking noise coming from my dash that just started today. Tried searching online a few posts said it was low oil or an issue with te A/C, but after I added oil it still does it. It's done it when I was driving on the freeway and when I've just unlocked the car and only had ...Look for a bent pushrod. May have bent when it tried to open the cylinder with the motor hydrolocked, and the noise would come from the valley pan as the pushrod makes contact with the valley. You may have bent a connecting rod. Disconnect 1 spark plug wire at a time and see if the knock goes away.Answered in 46 minutes by: Chevy Mechanic: Michael Moore. This is caused by a bad actuator for the a/c system. It sounds like you have a bad air inlet (recirculation) door actuator. The actuator is a small motor that moves the door, inside there are a few small gears. The gears inside the actuator break and so when the hvac controller tries to ...I am experiencing intermittant knocking under the dash that ocurrs when I start the vehicle, turn on the AC and switch the flow of air from recycled to direct. The knocking will last for about 45 seconds then goes away. The knocking continues when I trun off & on the fan or AC, turn on the heat ect.Longmont2237. I have been getting a ticking noise regularly in the past month or so. Ticking noise begins when I open door and enter cab. Noise comes from area of temp control/fan/ac cluster area of dashboard. Noise lasts 2-3 minutes then goes away. Park vehicle and get out, come back and re-enter truck same ticking noise.Repair Manuals: https://shrsl.com/3zwnv https://sovrn.co/amfaf3n Fix it Angel EBAY STORE: https://ebay.us/OE6UsK repair smith https://fxo.co/1284793/fixit...2354 posts · Joined 2005. #1 · Oct 16, 2005. I have a '05 Sierra Ext Cab that's about 2 months old and have my first noise. I knew it was coming but this is an odd one but could be normal. I usually notice it when I'm sitting idle at a red-light and it's coming from underneath the dash on the passenger side. It's kind of an erratic tapping ...See if the noise changes when you press the recirc button and allow the door to reach full open or full closed position. You can also open the glove box, release the retainer so it opens fully and you can get behind it, and put your hand on the recirc actuator (up and to the right) and feel if it is the one making the noise. If you paid for the ...If your a/c condensation hose is draining properly, you must have a pocket of water somewhere. The 8th generation Impala model could trap water in the cowl, and cause a sloshing sound. The way to check is to remove the air inlet grill and water deflector according to the instructions in the vehicle owner’s manual - to inspect the cowl area ...410. GuruL67J6 answered 5 years ago. I have a 2011 Chevy Impala and my car makes that loud clicking noise from the dash. It started in one place, and now when …Engine rattle at low RPM is a common issue that many car owners experience. It refers to a knocking or rattling sound that occurs when the engine is running at a low speed, typically below 1000 RPM.This noise can be quite concerning, as it may indicate a problem with the engine's internal components.There are several potential causes for engine rattle at low RPM, including worn-out engine ...7. Engine or Mechanical Issues. Sometimes, the source of the noise is not the dashboard itself but rather mechanical components in the vehicle. These noises can be transmitted through the car's structure and become audible at the dashboard. Common sources include the engine, transmission, wheels, or other parts of the car's mechanical system.9 Reasons Why Your Car Makes Noise When Turning. The most common causes of noises when turning are a bad coil spring, struts, or shocks. It could also be caused by a bad steering rack, tie rod ends, or worn ball joints. If you hear a growling noise when turning, it can be a bad wheel bearing. These are the most common reasons, but they aren't ...Does your 9th Gen Impala have an annoying rattle or clacking noise coming from the rear of the car when driving down a bumpy road? Before you spend money on...Knocking Noise. Asked by Guru9S6XT Jun 30, 2017 at 02:28 PM about the 2007 Chevrolet Impala 3.5L LT FWD. Question type: Maintenance & Repair. What is causing a knocking in my dashboard. of my 2007 Chevrolet Impala, and what. needs to be done to fix this problem? 3 Answers. 420. DrSTA answered 6 years ago.Detonation knock can occur from low octane fuel. Because premium fuel is stable at higher temperatures, it doesn’t cause this problem. Therefore, if your vehicle is supposed to use premium fuel and you downgrade, you may hear this knocking sound. The noise means that the gas is igniting at the wrong time. 2. Bad Knock Sensor …Symptom: knocking sound. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your Impala. The sound is something like a light tapping on the door and it typically happens when you turn on/off the air conditioning system or start the engine. A bad blend door actuator making a knocking …Own a 2008 Impala Ss with 110k miles. Have a bad clunk from the rear right wheel area over bumps. Started happening after I got my parking brake fixed (was stuck engaged) and the frequency of the clunk changes if I pump the parking brake before driving. I would be inclined to check the back hub, especially with what you say about the issue ...Low oil levels, dirty oil, and oil leaks that starve the engine of fluid are common causes of the engine knocking at idle. Replacing or topping off the oil may resolve the problem of your engine knocking at idle. However, if the problem is not due to oil issues, there are other commonly reported problems that may be the cause, including:test if it is the compressor by listening and then turning the ac off the pulley will still spin but the compressor stops. if the noise remains , replace the pulley bearings. I have a 2009 chevy impala making a clicking noise on the passenger side of the dash board or the fuse box from the engine.Jun 24, 2014 · 183 posts · Joined 2013. #1 · Jun 24, 2014. Hey everyone. So yesterday when I started the Jeep, there was a loud clicking sound coming from behind the passenger side dash. It was about 5-8 loud clicks after the engine started. It has been doing this with every start, and occasionally while driving as well. Jun 23, 2011 · 2008 Chevrolet Impala: dashboard..passenger side..vent..noise stops. When I sit in my 2008 Chevrolet Impala, a popping noise comes from inside the dashboard on the passenger side. I know that it has something to do … read more. David H. Vocational, Technical or Tra... 2,678 satisfied customers. The 2004 Chevrolet Silverado has 5 problems reported for constant clicking noise in dash. Average failure mileage is 52,600 miles.Asked by Trish Nov 16, 2015 at 02:43 AM about the 2012 Chevrolet Impala LS FWD. Question type: Maintenance & Repair. im pretty sure it has something to do with the blower motor. there is thicking noise that comes on when i start the car,sometimes im not even near the car and its ticking right behind the dash any ideas.STANWIL09. MEMBER. 2006 CHEVROLET IMPALA. 6 CYL. 2WD. AUTOMATIC. 46,000 MILES. I have a knocking loud sound coming from under the right side dash area when I shut off the motor in my car listed above LT. The knocking sound last for about 30 seconds, and then stops.Apple said Monday that its next-generation CarPlay system will power the vehicle’s entire instrument cluster, the next move in its battle against Android Automotive OS, Google’s in...C. cbibb Discussion starter. 37 posts · Joined 2018. #1 · Feb 10, 2018. Hey guys I recently picked up a 2006 silverado and I am getting a clicking sound that sounds like its under the dash passenger area. All the selections for the ac/defrost/floor etc work correctly. It isnt very loud and you can oly hear it with windows up and radio off.you can buy the part here: https://amzn.to/3WGVwjNIf you don't have an Amazon account, click here for a free month: https://amzn.to/2TSFS4aIf this video help...If the blend doors are not moving because they're stuck or broken, you will hear a clicking from in your dash. The motor can also fail and cause a clicking noise. The compressor works like a pump to compressor refrigerant. If there is a problem in the air conditioning system, such as a leak, the compressor could turn on, then off, then on ...Then you can remove the defroster vent trim by just prying up on it and it should just pop off the dash. you will have to disconnect the light sensor to fully remove the defroster vent trim once it is loosened. Like. jtrosky Discussion starter. 12439 posts · Joined 2013. #3 · Aug 11, 2013.Hi ,I just got a 2011 impala 2 months ago ,I put less then 500 miles on it ,when I'm in car and take a sharp left I have loud clunking noise and almost feels like slight hesitation,I too kk home and in driveway turn it all the way left and went back and forth just a bit and a loud clunking noise ,thoughts or need more info let me know,thanks. Like.What you are hearing is a door actuator. This is a small electrical motor that moves the temp doors or the recirculation door. When the actuator goes bad, you will …On most vehicles, replacing the blower motor is generally an easy and simple repair that can be accomplished by anyone. For vehicles with the blower motor under the dash on the passenger side, the steps usually involve: Removing the Glove Box. Removing the glove box or shield underneath the dash. Disconnecting the Electrical Connector.Most vibrations and noises can be classified according to when they occur: Engine speed sensitive — The vibration/noise is directly related to engine speed and nothing else (not vehicle speed or driving conditions). The symptom appears or changes in direct proportion to engine rpm. Vehicle speed sensitive — The vibration/noise only occurs ...2011 Impala has loud clicking noise that can be heard outside the car, very plainly. It starts right after using the key fob to lock or unlock the doors and lasts for about 30-40 seconds. ... If you are ever in the car when the noise is happening, check to see if it's coming from behind the dash near the center console. That'll help narrow it down.Its like a random clicking noise like someone is taking a small wrench against something under the dash and around the glovebox area. Its really weird. Only does it on start-up or when I turn the car on and it lasts for about 5 clicks or so. Pretty damn random and was wondering if anyone else is getting this. SaveShare.The source of that annoying knocking sound in your Impala's dashboard. Get expert tips and solutions to resolve it quickly.A knocking sound when applying the brakes could indicate different problems, such as loose calipers, bad shock absorbers, worn constant velocity joints and failing tie rods. There ...Leaded gas is gasoline to which a compound of lead has been added. Commonly tetra-ethyl lead, this compound was added to reduce the "knocking" or "pinging" sound heard while the en...13 Engine Clicking And Tapping Noises problem of the 2007 Chevrolet Impala. The contact owns a 2007 Chevrolet Impala. The contact stated that when the vehicle was started, a ticking noise was heard from the vehicle. The contact stated that while driving approximately 25 mph, the no engine oil warning light illuminated.(Kitco News) - Despite last week's gains, gold has kicked off the new trading week down 1% on the day. And Capital Economics is projecting more lo... Indices Commodities Currencies...If this knock sensor has gone bad, it can send false signals to the engine control unit, which will cause a knocking engine. 3. Wrong Ignition Timing. Too advanced ignition timing will cause the engine to start knocking or pinging. Because of this, a faulty ignition timing could, of course, cause an engine knock.I had a similar issue when I bought my 2012 (19k miles). It was most noticeable when I pressed the gas pedal after coasting at low speeds. Read this post here for what they found (they had to call Chevy for assistance as they couldn't find the issue): "Clunking" noise from front end on 2012 Impala and the solution - Chevy Impala Forums.This is what I found…. The three most common causes of clicking noise from the dashboard are: Heater control module lost calibration. Faulty blend door stepper motor. Relay. In this post, you'll learn about the most common causes of dash-clicking noise and how to diagnose and fix them.The dashboard may make clicking or knocking noises as the system tries over and over to reposition the part. A failing stepper motor may also make a clicking noise when it attempts to move. Worn or broken gears, the wrong voltage, or a faulty control circuit can all contribute to stepper motor issues.Apple said Monday that its next-generation CarPlay system will power the vehicle’s entire instrument cluster, the next move in its battle against Android Automotive OS, Google’s in...1. Strange Sounds. As the blend door actuator fails, you could hear a variety of noises. When first starting the climate control system, you may hear knocking noises. There could also be a clicking sound coming from the dashboard area. These sounds could be faint or loud, and they can be repetitive or constant.Sep 24, 2016 · The noise you are hearing is most likely the blend door actuator attempting to move to its default position but is not able to do so. This repair usually requires the blend door actuator to be replaced. This is often times a very costly repair as the dash sometimes needs to be removed from the vehicle in order to access the blend door actuator. 1. Bad Sway Bar Links or Bushings. The most common cause of a clunking noise coming from your car when you go over bumps is due to worn sway bar links or bushings. These sway bar links have ball joints that will wear over time and cause a clunking noise. If the sway bar bushings that are holding the sway bar are worn, that will also cause a ...I HAVE A 2008 IMPALA AND IT MAKES A CLICKING/KNOCKING NOISE WHEN I TURN OFF THE CAR AND LAST FOR ABOUT A MINUTE. Posted by msosahspt on Aug 23, 2011. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. Comment; Flag; More. Print this page ...1. Clunking Noise When Turning. The number one sign of bad steering shaft joints is a clunking noise that comes from the dashboard or steering wheel when turning. A lot of times, you will not need to turn the steering wheel too much to hear the noise. A slight turn on either side generates a sound that tells you there's metal to metal contact ...Air Conditioning System Issues. When you hear noise from the dashboard, it's typically the A/C system. There aren't too many parts in an A/C that will click, so it's relatively simple to narrow down the possible causes of a clicking sound: compressor cycling or blend door issues.What does it feel like to get a concussion? What are the mental and physical effects of this injury? And how can we best diagnose and treat them in the future? What does it feel li...If you turn on the AC and immediately hear a rattling noise, there are a few potential causes: Compressor: If your AC compressor is beginning to fail, it can make a rattling noise. Pulley: If the compressor pulley bearings are failing, they can make noises, generally a grinding, roaring or squealing noise. Belt: If the serpentine belt is worn ...On my impala, the actuator went bad and needed to be replaced. This video will show you how I replaced it.impala limited. Jump to Latest Follow. 2K views 2 replies 3 participants last post by Two Impalas May 20, 2021. Chevy Impala Driver Discussion starter. 3 posts · Joined 2020. #1 · May 18, 2021 (Edited) In my mom's 2014 Chevy Impala LTZ Limited there is a clicking noise coming from the passenger side of the dashboard.This repair applies to and is very common on all Chevy Impala vehicles 2006-2013. If your Impala has a noisey clicking dashboard, this video is for you!$20 b...This has happened several times nearly causing several accidents. The vehicle intermittently has reduced engine power while driving and jerks from a complete stop sometimes. Now the oil engine pressure/turn off engine light and alarm go off all the time. Replace the sensor, but to no avail. The loud knocking sound from the dash is utterly annoying.If you don't have compressed air, you can try unclogging the drain by inserting a flexible wire into the tube hole. Give it a good wiggle to loosen up any caked-in dirt and grime in the drain. 2. Low coolant. Low coolant level in Impala can cause sloshing sound from behind the dashboard when the engine is running.The knock sensor in a Nissan Xterra performs a critical job. It "listens" to your engine to make sure that the engine is firing properly. If too much fuel gets into the engine, the...Chevy Impala Discussion. Knock noise in dash when stopping or taking off. 1248 Views 4 Replies 3 Participants Last post by kbz1960, Jan 25, 2019. kbz1960 Discussion Starter · Jan 21 ... Only show this user. There seems to be something rolling? around in the dash as the knock / clunk is only heard when taking off or stopping but not all the ...Adransoff4. 1 post · Joined 2023. #3 · Jan 22, 2023. Replacing the air inlet actuator ( the one behind the glove box) is possible without removing the dash. Did it last night. You will need to remove the Aux actuator ( passenger side) to have enough room for hands and tools to remove T20 screws on the air inlet actuator. Top screw is a blind ...Chevrolet Impala 2013 - 2018 ALL ALL LFX ALL Chevrolet Traverse 2013 - 2018 ALL ALL 3.6 LFY, 3.6 LLT ALL ... Customers may bring their vehicle into the dealership for a rattle, tick, or knock type noise. NOTE: If there are any drivability concerns they should be addressed prior to the following diagnostic progression.Help. Ac making knocking noise I have a similar problem. I just bought a 2007 impala lt with the 3.5 L v6. There is no problem with the ac when its on but when I turn it off it makes a knocking noise from the passanger side for about 30 sec then stops. It ony does it after turning off the ac or vehicle.Then you can remove the defroster vent trim by just prying up on it and it should just pop off the dash. you will have to disconnect the light sensor to fully remove the defroster vent trim once it is loosened. Like. jtrosky Discussion starter. 12439 posts · Joined 2013. #3 · Aug 11, 2013.Knocking Noise in 2012 Chevy Impala 2 Answers There is a knocking noise that started a few days ago. After looking up the problem, I found that it is the actuator for the air, and it is an extremely common issue with Impala's.A repetitive clicking noise from behind the center area of the dash panel is usually caused by a broken stepper motor actuating arm. The actuating arm controls the direction of air flow in the climate control system. Disassembly of the center console will be required to access and change the broken arm with the updated, reinforced part.

Mags94 Discussion starter. 7 posts · Joined 2012. #1 · Mar 29, 2012. I did a quick search and didn't find anything other than the blower motor issue at the glove compartment area. But on my 2008 Impala LT the knocking noise is coming from behind/under the dashboard, anybody have this problem. My Haynes manual doesn't show the AC Ventilation .... Pick 3 prediction for today ohio

knocking sound in dashboard impala

CHEVY IMPALA CLICKING NOISE IN DASH FIX!!! Chris Arnau. 14.4K subscribers. Subscribed. 4.1K. 178K views 6 years ago. Support My Channel! Paypal - …Reconnect the battery afterward. Test the system: Turn on the car and test the HVAC system. Check if the clicking noise persists when the car is off. Replace faulty actuators: If the noise continues, identify the faulty actuator (s) and replace them as per your car’s manual.Try this. Sit in the car after you shut the engine off. Remove the key but do no open the door. Wait a minute or 2 until the interior lights shut off and the radio times out. See if the click you hear is the same as the one you hear when you open the door.Definition of Engine Knock. Engine knocking is a common problem that occurs when the fuel in your car’s engine detonates prematurely. This can result in a loud, knocking sound that can be heard from inside the vehicle. The knocking can be caused by a variety of factors, including poor fuel quality, incorrect fuel octane rating, or a …Support My Channel! Paypal - [email protected] / Cashapp - $cdarnauParts - Actuator - http://amzn.to/2Aep9kbTools -5.5 Socket - http://amzn.to/2jwCLh01/4 Ratch...Main Causes Of Dashboard Sounds. There are several causes for the clicking noise coming from the dashboard, including a faulty door engine, heater control loss, transmission problems, and even incorrect weather settings in the car. The HVAC or the Heating Ventilation Air Conditioning system controls airflow, cooling, and healing with the blend ...Hello everyone, I am hearing a constant knocking sound from my car's dashboard. Please help me figure out where it is coming from and what is the solution? ... strange noise. Chevy Impala 2011. ... Do mechanics often unplug dash cams when they take a customer's car out for a test drive? See more posts like this in r/MechanicAdviceThe noise is one of the actuators that moves the air flow doors into different positions. Common problem. When the noise happens, move the temp. control from cold to warm. If the noise goes away, it is the temp. actuator. Or, press the recirculation button to go from fresh air to recirc. If the noise goes away, it is the recirc. actuator.Own a 2008 Impala Ss with 110k miles. Have a bad clunk from the rear right wheel area over bumps. Started happening after I got my parking brake fixed (was stuck engaged) and the frequency of the clunk changes if I pump the parking brake before driving. I would be inclined to check the back hub, especially with what you say about the issue ...Symptom: knocking sound. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your Impala. The sound is something like a light tapping on the door and it typically happens when you turn on/off the air conditioning system or start the engine. A bad blend door actuator making a knocking …19 posts · Joined 2014. #6 · Jul 2, 2015. The actuator making the clicking noise is this one, it's right above the first picture. It's located under the driver's side dash, then to the left. Just remove the two top bolts (one is black in the picture) and the one bottom bolt. Then disconnect the electrical connector.22 posts · Joined 2017. #1 · Oct 8, 2019. I have a 2013 impala ltz. I believe an actulator is going out, but I just want to ensure I know which one. Whenever you open a door it starts to tick like a mad man. Also, whenever you switch vents it ticks as well, switching to hot/cold makes it tick, and the passenger side ac/heat doesn't always switch.Nikki. 3 posts · Joined 2020. #19 · Sep 26, 2020. Just bought replacement per instructions: 1) Do not power unit prior to mounting 2) Disconnect negative battery cable 3) Turn ignition on, WAIT 5 MINUTES, then turn ignition off 4) Reconnect neg battery cable 5) Insert key into ignition and turn ON, with engine OFF.My car is making the knocking sound from the dash when the car is turned off and after I have opened the door cutting power to everything. It goes on for 3-5 minutes. ... 2006 chevy impala 3.9 liter something down inside the ac venting system starts a thumping noise when ac is on. there are two buttons one for outside air circulation and one ...03 Impala 3.4 - Knocking / Stalling. Jump to Latest Follow ... Vehicle operates fine when cold. about ten minutes into driving you will get a random knocking sound. this happens only when the gas pedal is pressed. For the first few minutes of this happening you can get rid of the sound by releasing the gas pedal when you hear it and pressing it ....

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