Gmc acadia shakes when accelerating

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44 posts · Joined 2012. #1 · Nov 10, 2022. Hi group, Recently my 2010 Acadia has started making increase vibration, more noticeable when sitting at a stoplight....I can feel the whole cabin vibrating more, and especially through the pedals and steering wheel. Has anyone experienced this, and is there any tips on what might be …11 posts · Joined 2007. #1 · Oct 23, 2007. Hi. I have a vibration problem with my Acadia SLE AWD. There is a noticable vibration through the accelerator pedal between 1600 and 2000rpm, and sometimes when pushed (i.e. overtaking, going up hill) this vibration (and noise) increases and shakes the entire dashboard for a short period of time.I bought on 1/12/2017 a used 2013 certified pre owned GMC Acadia Denali has 23000 miles on it and problems from day one it's been in the shop more than 6 tim...Wood shake siding has never completely gone out of style. While it is a classic option, it can also help create a wide range of exterior appearances. Expert Advice On Improving You...airforceone Discussion starter. 95 posts · Joined 2013. #1 · Dec 14, 2013. I am feeling a transmission shudder if driving at 20 or 43 MPH with my 2007 Acadia. Once you pass through those speeds the shudder stops. Those speeds coincide with the new GM transmission calibration: From 2 to 3rd gear at 20 MPH and from 4 to 5th gear at 43 MPH.At 1000 rpm, whether in park, drive, neutral, accelerating, or decelerating, there is a growling/reverberation that sounds like its coming from the engine. It's like the sound a steering pump makes when low on fluid. This started after I had a cooling system inspection and flush, condenser cleaning, fuel system service, and power steering flush.Dec 17, 2018 · Yes, If there is no check engine light then there is nothing out of spec or bad. Richard Greer. Category: GMC. Satisfied Customers: 1,324. Experience: Master Technician at Firestone Complete Autocare. Verified. Richard Greer and 87 other GMC Specialists are ready to help you. Ask your own question now. Aug 15, 2018 · 2013 GMC ACADIA 96,000 miles -. Complaint - Most common reappearance is at -->. 1,800 RPM. 40 MPH. Under slight load. 5th gear (not exact) 5-20% Throttle (not exact) -->There are no codes in any monitors completed visual inspection of filters and sensors and tried different gas station of a couple weeks. Ran 4 tanks of 93 octane with Lucas oil ...

Shakes in 4cyl mode - Technical Service Bulletin. 17-NA-168. New to the forum here, and proud owner of two 2017 GMCs - my wife's Acadia and a Canyon. When the Acadia is in 4 cylinder mode, the car shakes noticeably, especially when going back to accelerating - then immediately runs normal when it is pumping all 6.The most typical cause of a car shaking and vibration on the gas pedal 60 MPH is a problem with the tires. The shaking begins at roughly 50-55 miles per hour (mph). It gets worse at about 60 mph before improving at higher speeds. A balding or unevenly worn tire, or an imbalanced wheel, could be the source of the problem.Brake Calipers. This is especially true for a seized or stuck brake caliper. If that happens, one or more of your wheels will have brakes that are being constantly applied, which can cause ...Dustin, when accelerating the air is sucked into the TB through the air filter, MAF and the air box. Check for any obstructions/dirt in any of these areas and while in there clean the MAF too with MAF cleaner. Check all vacuum hoses for pin hole leaks too. Could also be wind noise from door/window seals too. 2002 Silverado LS Ext cab long bed 5 ...Aug 26, 2019 · 2008 gmc Acadia shudders under acceleration usually at speeds below 60. It doesn't happen every time I accelerate, but most if the time. Codes p0752, p0420, p0700 … Rough Idle/Acceleration - LLT V6 variant. My 2011 Acadia has approx. 89K miles, and for the past month, it has been having several different issues, such as engine surges, rough idle and acceleration and the service engine light has been coming on. When this first started about a month ago, I noticed the engine running rough after fuel fill ups.

Feb 7, 2022 · 11 posts · Joined 2021. #1 · Feb 7, 2022. I have a 2012 GMC Acadia that just hit 113k miles. Recently, I have heard a rattle noise almost like if you were to take screws and shake them in an empty plastic bottle. It doesn’t happen every time I accelerate but it usually occurs if the car hasn’t been driven in a day or two. I too have a vibration starting about 60 but can be drove out about 70 plus. transmisson rebuilt, new tires aligment and road forced balance. all done at dealer and under warranty it a 2016 Acadia awd. I am very concerned. called GM said to take it another dealer second opinion. after running several test said its the nature of the …1705 posts · Joined 2015. #2 · Jul 20, 2019. A rattle or clatter sound like drawing a stick across a picket fence on hard acceleration could be preignition spark knock from low octane gasoline. Change gasoline supply or try higher octane and see if it makes a difference. Current Chevys -'19 Silverado RST;'18 Malibu LT Redline;'18 Traverse ...2 posts · Joined 2015. #1 · Nov 12, 2015. Hi new poster here. My wife's 2008 Acadias power steering pump has always made a whine noise. More so when turning the wheel. It has gradually gotten worse/louder and more noticeable even when not turning the wheel. Then when you first started driving it when it was cold yet and turning at low speeds ...6239 posts · Joined 2009. #2 · Feb 23, 2012. Econow said: Any help on this mater would be great. My 2007 SLT1 sways going down the road. If you are sitting in the back. seat you could get nausuas. rims and tires are fine. put it on the hoist and found 2 control arms on the driver.Acadia National Park is the perfect place for outdoor enthusiasts, adventurers, and those who love to take in the beauty of nature. We may be compensated when you click on product ...

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GMC Acadia Shakes When Accelerating: Causes. There are quite a few reasons that your Acadia would shake when accelerating. Here are the most common ones. They are presented in a somewhat logical progression. 1. Misfire. Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. See moreThe reason your GMC Sierra shakes at idle but smooths out when accelerating is that the engine is spinning faster, which smooths out any misfires. If a motor mount is causing the problem, once you put the truck into gear, the torque from the engine will hold it against the frame. It can be very jarring when your GMC Sierra shakes when …8 Causes of Car Shakes When Accelerating. The most common reason why a car is shaking or vibrating when accelerating is due to unbalanced wheels or a worn CV joint. It can also be a damaged driveshaft, but it could also be caused by engine issues like a misfiring engine. Here is a more detailed list of the most common reasons why a …Mar 20, 2022 · Some vibrations occur in a geometric progression. In the case of your vehicle, it may occur at 32.5 to 37.5, then again at 65 to 75, and would likely happen at 130 to 150. Slow speed vibrations are seldom harsh enough to be felt. The vibration may be amplified from the stress of torque applied during acceleration.

We purchased a 2014 Acadia Denali AWD on 8/28/13. This vehicle has had a vibration since then that to date has not been fixed. We returned it to dealer and first attempt was Road Force Balance. Vibration still there. Vibration goes away when drive shaft is removed. GM was contacted and rep told dealer to replace differential clutch …Jun 1, 2017 · 51 posts · Joined 2011. #1 · Jun 1, 2017 (Edited) Hi Everyone, My Acadia has started to rock side-to-side (left/right) at highway speeds (> 60 mph / 100 kph). It is a 2009 SLT1 (18" wheels) with 65,000 mi / 105,000 kms. Any ideas as to what could be the problem? 44 posts · Joined 2012. #1 · Nov 10, 2022. Hi group, Recently my 2010 Acadia has started making increase vibration, more noticeable when sitting at a stoplight....I can feel the whole cabin vibrating more, and especially through the pedals and steering wheel. Has anyone experienced this, and is there any tips on what might be causing this ...Experiencing a constant vibration at approximately 1600-1700 RPM in any gear at steady speed. Dealer service tech has been able to duplicate the problem on my 2017 Denali as well as other new Acadias in the dealer's inventory. The vibration seems to be engine related. However, there is no information on a probable corrective measure.Dec 1, 2017 ... It really was jerking when accelerating or ... Why your car may be jerking, bucking, hesitating, or shaking in town or at highway speeds!Dustin, when accelerating the air is sucked into the TB through the air filter, MAF and the air box. Check for any obstructions/dirt in any of these areas and while in there clean the MAF too with MAF cleaner. Check all vacuum hoses for pin hole leaks too. Could also be wind noise from door/window seals too. 2002 Silverado LS Ext cab long bed 5 ...1. Misfire. Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. A misfiring engine is one of the most common reasons your Terrain will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires.When accelerating or decelerating: If the vibration disappears when giving my truck more gas or backing off the gas 1, it’s a possible sign of a legitimate problem. By carefully observing and analyzing my GMC Sierra’s performance and conditions during the intermittent vibrations, I can better determine if it’s a false alarm or a genuine ...If you’re in the market for a new or used GMC vehicle, finding a reliable dealership near you is crucial. Whether you’re looking for a spacious SUV like the GMC Acadia or a powerfu... 14 Vehicle Shudder problem of the 2008 GMC Acadia. Failure Date: 09/15/2014. During acceleration the vehicle vibrates when going between 35 and 45 mph. Was not able to reproduce issue at dealership last fall, but is now getting much worse. Happens almost everytime the vehicle accelerates. 2618 posts · Joined 2010. #4 · Jun 23, 2012. Re: vibration and jerk Before shifting 2-3 ( Acadia 2007) help me. SEEMO said: GMC Acadia car 2007, I have a problem in the shifting Transmission, the speed of 60 kilometers, Before Transmission , it gets vibration and jerk then its gose ok. I am very far from the Agency, and has to know …2013 GMC Acadia feels like engine is stumbling or hesitating when accelerating lightly or up hills. when a little more gas applied it works through the issue. ... Issue with a 2011 GMC ACADIA. Got two codes. Shakes and.

I have a 2014 arcadia, loved it, but having similar issues. Feels like its choking, or bogging down when accelerating, similar events when driving press the gas pedal to the floor to stop it, or smooth out the shaking . one trick i noticed under the steering column i moved some wires and it started to drive alot better.

1 post · Joined 2022. #8 · Jan 25, 2022. I have a 2019 GMC Acadia that is experiencing the exact same whistling sound also on like acceleration, 25-40mph. Nothing at idle. I had the transmission checked out and no issues found there. I was wondering if it is the luggage rack on top that I hear. 2019 GMC Acadia.If you would like to support my channel, you can buy my t-shirt here: https://fca-merchandise.creator-sprin... THANKS!There are common problems that cause yo...This bulletin replaces PIT5771B. Please discard all copies of PIT5771. Some customers may comment that a Wobble/Vibration occurs on hard acceleration (WOT) around 48 to 112 km/h (30 to 70 mph). This condition may be caused by driveline vibration. Important: This bulletin is to address the above scenario ONLY.I started chasing a shudder that occurred during acceleration, usually between 25-40 MPH, about 2 months ago. Goodyear told me it was due to a bad upper …GEORGEC. 1755 posts · Joined 2010. #7 · May 19, 2021. Years ago I owned an Acura MDX that had a vibration on slow speed left turns. The dealer said new rear differential at $3,000. My independent mechanic said there was a Tech Bulletin that said change the fluid. $64 later and a fluid change and the problem was solved.Mar 2, 2020 · J. Johnny001 Discussion starter. 179 posts · Joined 2019. #1 · Mar 1, 2020. Hi guy I have 2013 awd Acadia when I accelerate from full stop my Acadia back will vibrate or like tires are skipping if that makes sense I am not trying to drag race just if I step on the gas but more it does it but if I take it easy it’s fine its like car is ... Nov 30, 2012 · If its the 1st acceleration--- there is a self test that occurs at about 20 MPH. The self test is for the Stabilitrack.ABS system. You can hear it- and feel it in the brake pedal. 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. Like. T. Sep 16, 2021 · Some of us may have a known issue going on with our vehicles that is a cause of concern and simply irritating. Chevrolet, GMC shudder or shaking when your driving down the road at a steady or slight acceleration. This usually happens around 25 to 80 miles per hour. What is it? Several things could be the cause like tire balance or wheel balance.

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justfishin99 Discussion starter. 14 posts · Joined 2023. #1 · Mar 28, 2023 (Edited) I have a 2008 GMC Acadia SLE - AWD. What would cause a vibration like noise from driver rear of vehicle between 2000-3000 rpms and only while in drive? If I’m accelerating and the noise occurs, I can push it into neutral and it stops. Speed doesn’t seem to ...If you’re in the market for a spacious and reliable SUV, the GMC Acadia is likely on your radar. And while buying a brand new vehicle can be exciting, it’s important to consider al...Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/240/y/evap-emission-control-system-partsWhat are the GMC Acadia Top Problems? Andy shows you 5 of the ...This whining noise can be caused by a bad serpentine belt, a boost leak or a vacuum leak. It could also be due to a power steering issue, worn bearing or low engine oil. In extreme cases, the whining could indicate that there’s a larger problem with the transmission that needs attention. 1. Damaged Serpentine Belt.1. Misfire. Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. A misfiring engine is one of the most common reasons your Terrain will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires.My problem presents itself when I'm accelerating at lower speeds, let off the gas a little and then re-accelerate. The transmission feels like it slips momentarily and then re-engages with a sudden jolt/clunk. Some important things to know are that the 3-5-R waveplate was replaced preemptively 5 years ago (before it could ever go bad).GMC Acadia 2020 2022 M3H, M3G Terrain M3H, M3U Holden Equinox 2020 2020 M3D Involved Region or Country North America, Middle East, Europe, Australia/New Zealand ... ⇒ PIT5778A: Vibration Or Boom At 1300 RPM (Equinox, Terrain) ⇒ PIP5697B – DTC P0747 Setting At Engine Start-Up When The TransmissionAir Filter. If you are feeling a vibration when you are accelerating it is possible that your filter is clogged. This is where the engine gets its air for combustion. If something blocks that flow it can cause hesitation and …This 2010 GMC Acadia has a vibration and noise above 45 miles per hour. Let's fix that! Also bonus footage with a special guest. Merch: http://watchweswork.c... ….

A shake and/or shudder during light throttle acceleration between 25 and 80 mph (40 and 128 km/h) steady state driving when transmission is not actively shifting gears. A shudder feeling that may be described as driving over rumble strips or rough pavement. Shudder feeling is evident in both Drive and M7 modes.The alternator in your GMC Safari is responsible for charging your vehicle's battery and providing a constant, reliable source of power for your Safari's electrical components. Whe...Sep 8, 2019 · The reason your GMC Acadia shakes at idle but smooths out when accelerating is that the engine is spinning faster, which smooths out any misfires. If a motor mount is causing the problem, once you put the vehicle into gear, the torque from the engine will hold it against the frame. It can be very jarring when your GMC Acadia shakes when idle. Common symptoms of a stretched timing chain in the Acadia include: Rattling from the engine. Check engine light. Car shakes or vibrates excessively. Misfires. Engine shuts down, stalling. Rough idle. On CarComplaints.com, engine failures caused by timing chain problems were reported up until the 2012 model year.Oct 5, 2022 · Generally, the GMC Acadia transmission filter requires a replacement every 30,000 to 50,000 miles, costing around $30. Now that you have treated your Acadia to a new gasket and filters reattach the transmission pan, and lower the vehicle by removing the jack stands. Pop the hood - it's time to replace the ATF you drained with a brand-new one. Oct 18, 2014 · 2 posts · Joined 2014. #1 · Oct 18, 2014. 2009 Acadia has 128k miles and shudders under light acceleration 20-25 mph, 40-45 mph and 60-65 mph. I took this to a GM dealer who diagnosed the rear upper lateral links as being " blown out". I've since replaced them both to no avail as the vehicle feels like your going over a rumble strip when this ... Now, the vibration is gone but there is a low-tone/f ... 3,528 satisfied customers. 2015 GMC acadia shudders and hesitates under heavy. 2015 GMC acadia shudders and hesitates under heavy acceleration, symptoms started when ABS and stabilitrak started acting up as well, ...I have not observed any untoward vibration at idle, low speeds or any other scenario. Barely discernable to feel or hear when it does go in or out of V4 mode. 2019 Acadia SLT-1 FWD Smokey Quartz Metallic 3.6L V6. Cocoa & Ash Gray Leather Interior. Build Date: 4-11- 2019. . . Purchased 6-22- 2019 15,180 Mi 2-09-2024.Bulletin No.: 20-NA-227. GM bulletins are intended for use by professional technicians, NOTa "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools ... Gmc acadia shakes when accelerating, Jan 23, 2014 · 95 posts · Joined 2013. #1 · Jan 23, 2014. I have transmission vibration/shudder when the transmission shifts to a higher gear and RPM drops to 1500. This is happening mostly when going uphill. I need to keep pressing the accelerator and rising the RPM to stop this vibration/shudder. , Service type. Engine is shaking, pulsating or vibrating Inspection. Estimate. $99.99. Shop/Dealer Price. $110.24 - $117.94. Show example GMC Acadia Engine is shaking, pulsating or vibrating Inspection prices. Any unusual shaking or vibrating forces coming from the engine is cause for concern., I have a 2012 Acadia Denali that was experiencing the same issue rpm fluctuation under load. Thinking it was a gas/air mixture issue I tried swapping coils, spark plugs, cleaning gas tank, and cleaning the throttle body. It helped, but did not resolve the issue. There were no engine lights so I had nothing to go on., GEORGEC. 1755 posts · Joined 2010. #7 · May 19, 2021. Years ago I owned an Acura MDX that had a vibration on slow speed left turns. The dealer said new rear differential at $3,000. My independent mechanic said there was a Tech Bulletin that said change the fluid. $64 later and a fluid change and the problem was solved., We purchased a 2014 Acadia Denali AWD on 8/28/13. This vehicle has had a vibration since then that to date has not been fixed. We returned it to dealer and first attempt was Road Force Balance. Vibration still there. Vibration goes away when drive shaft is removed. GM was contacted and rep told dealer to replace differential clutch drum assembly., I bought on 1/12/2017 a used 2013 certified pre owned GMC Acadia Denali has 23000 miles on it and problems from day one it's been in the shop more than 6 tim..., RPMs drop and jerking while accelerating. hello everyone,i have GMC acadia 2008 and it has 200,00 kilometers . it drops RPMS from 2500 to 1500 at the speed of 40 to 50 miles/hour while accelerating... starting and initial running has no problem, but after reaching ( i guess 5 and 6th gear ) if i take the foot off the Accelerator pedal ,and ..., 2 posts · Joined 2015. #1 · Nov 12, 2015. Hi new poster here. My wife's 2008 Acadias power steering pump has always made a whine noise. More so when turning the wheel. It has gradually gotten worse/louder and more noticeable even when not turning the wheel. Then when you first started driving it when it was cold yet and turning at low speeds ..., Sep 6, 2023 · Below are 11 clear reasons why your car shakes when accelerating. Engine Complications. Most vibration complications start from the engine. Sometimes it’s a shudder other times a shake from your engine. When you experience such vibrations, it may be a sign that your engine is deficient of either air, spark, or fuel. , A shake and/or shudder during light throttle acceleration between 25 and 80 mph (40 and 128 km/h) steady state driving when transmission is not actively shifting gears. A shudder feeling that may be described as driving over rumble strips or rough pavement. Shudder feeling is evident in both Drive and M7 modes., The most common causes for GMC Acadia shaking at high speeds are unbalanced wheels, misaligned wheels, tire damage, bent rim, bad wheel bearing and loose lug nuts. Less common causes are bad axle, worn suspension or steering parts or incorrect tire pressure. 1. Unbalanced wheels. The leading cause of vibration in GMC Acadia when driving at high ..., Damaged or worn out timing belt or chain: The timing belt or chain keeps the engine’s valves and pistons in sync.If it fails, the engine may misfire and shake. Engine overheating: If the engine overheats, it can cause damage to the spark plugs, ignition coils, and other components, leading to misfires and shaking.; Low compression in one or …, Dec 6, 2022 · 2008 Silverado 5.3 I'm annoyed with the hesitation when I try to accelerate quickly. No problem most of the time, and if I accelerate slowly, it runs perfectly, smooth as silk. It's just from an idle, typically at a stop light. No codes, Most likely one of two things not enough air (air filter) or not enough fuel. , Most of the time, you’ll feel it when it engages. Service StabiliTrak Warning: Your Acadia’s “Service StabiliTrak” warning light is the number one indication that something is wrong. Cruise Control : If one of the wheel speed sensors is not working correctly, your Acadia may lose cruise control. Traction Control Not Working: Your Acadia ..., When the vehicle reaches 70 mph an unpleasant low frequency droning noise begins to fill the cabin and the volume rises with increasing speed. I usually drive in AWD or Sport (AWD) mode. The bulk of the acoustic energy is probably under 200 hz and resonant at certain low frequencies. AFM is in V6 mode., You may be able to hear these sounds through the floorboard, and you might feel a slight vibration near your feet. This sound will usually be louder with the windows down. — #1. Bad Catalytic Converter. The first issue that causes a rattling noise underneath your vehicle is a bad catalytic converter., 2 posts · Joined 2015. #1 · Nov 12, 2015. Hi new poster here. My wife's 2008 Acadias power steering pump has always made a whine noise. More so when turning the wheel. It has gradually gotten worse/louder and more noticeable even when not turning the wheel. Then when you first started driving it when it was cold yet and turning at low speeds ..., 1. Misfire. Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. A misfiring engine is one of the most common reasons your Terrain will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires., This 2010 GMC Acadia has a vibration and noise above 45 miles per hour. Let's fix that! Also bonus footage with a special guest. Merch: http://watchweswork.c..., Dec 15, 2013 · airforceone Discussion starter. 95 posts · Joined 2013. #1 · Dec 14, 2013. I am feeling a transmission shudder if driving at 20 or 43 MPH with my 2007 Acadia. Once you pass through those speeds the shudder stops. Those speeds coincide with the new GM transmission calibration: From 2 to 3rd gear at 20 MPH and from 4 to 5th gear at 43 MPH. , A faulty MAF sensor can cause all kinds of driveability issues: hesitation during acceleration. lack of power. misfires. surges. The most common problem withthe MAF sensor is dirt trapped inside the sensor, usually around the hot wire. Often, using a MAF sensor cleaner will help restore proper operation., For vehicles with a 3:08 with a one-piece steel shaft, this can be replaced with a one-piece aluminum one that is utilized on all 3:42 and 3:73 ratios (K15543 and K15753 Models only). PIP5140: Low Speed Vibration 30-35 mph (48-56 km/h). Inspect the transmission output shaft bushing for irregular wear., 1. Misfire. Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. A misfiring engine is one of the most common reasons your Canyon will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires. If it is an older model, it’ll have a distributor and coil ..., We've researched the topic in-depth and have an answer for you. There is more than one problem that might cause a Nissan Altima to shake when it is accelerating. Common issues include engine misfiring, damaged axles, tire issues, or broken or loose motor mounts. We've given you a few causes to consider, but keep reading as we …, The most common causes for GMC Acadia shaking at high speeds are unbalanced wheels, misaligned wheels, tire damage, bent rim, bad wheel bearing and loose lug nuts. Less common causes are bad axle, worn suspension or steering parts or incorrect tire pressure. 1. Unbalanced wheels. The leading cause of vibration in GMC Acadia when driving at high ..., This 2009 GMC Acadia was towed in with a no power concern. Turns out the catalytic converters failed, causing the exhaust to clog up and restrict engine power., 2013 GMC Acadia feels like engine is stumbling or hesitating when accelerating lightly or up hills. when a little more gas applied it works through the issue. ... Issue with a 2011 GMC ACADIA. Got two codes. Shakes and., May 30, 2013 · Shake around 65 mph, and a shudder when accelerating at highway speeds, and especially when downshifting to climb a hill. We've had balances, rotations, alignments, and a new steering gear. No luck. , Bulletin No.: 18-NA-358. Released November 30, 2018 March 11, 2019 – Corrected Acadia and Enclave Transmission RPOs. October 17, 2019 – Added the 2019 Model Year to the Impala and Acadia models and updated the Involved Region or Country section. February 28, 2020 – Added the 2018 and 2019 Model Year and Transmission RPO MHM to the XTS., First time visitor.....I purchased a 2015 Acadia SLT back in Jan. In the last few weeks, I've noticed the same "knocking" sound coming from the front end. I only hear the noise at low speeds (less than 10mph), when driving over small bumps. I have noticed some vibration in the steering wheel between 55-65mph. It currently has about 46K miles on it., Chevrolet, GMC shudder or shake is found to be the torque convertor. The good news is that the fix is to flush the transmission of its fluid and replace it with new. More about the actual problem can be found here in the TSB from General Motors. Again, all that would need to be confirmed by a certified ASE technician to be on the safe side., P0700 is a common code if it’s an electrical issue related to the transmission. If something has gone wrong in the transmission, your Acadia may not be able to accelerate anymore, or it’ll. If it can no longer shift, it could be caused by a solenoid/valve body that has gone bad, clutch packs, debris, and much more., We have researched to help answer this question below! There could be many different culprits that are causing your car to shake when turning and accelerating, including: Broken engine mounts. Unbalanced tires. Bad fuel pump. Low transmission fluid. Low power steering fluid. Bad tie rod. Bent driveshaft.