Gmc acadia shakes when accelerating

Jul 28, 2020 · 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.

Gmc acadia shakes when accelerating. 20 posts · Joined 2011. #1 · Jan 19, 2012. Ok just picked up my 2011 acadia from the dealer after its been there for 2 days for thumping noises in the front end and it still makes the noise.They changed the rack in pinion bushings also put in a adapter kit for the squeaking in the steering wheel.Cleaned the inside of my wheels and brake ...

Common reasons for this to happen: Most often, one of the following components is at fault: Old and worn spark plugs and wires (most commonly the issue) Loose or disconnected …

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...Another potential cause of a rattling engine noise in your GMC Acadia is piston slap. Piston slap typically occurs as a result of wear on the piston and the cylinder walls, causing the piston to move side-to-side and making contact with the cylinder wall. Piston slap is more commonly seen in vehicles with higher mileage.The Classic GMC Trucks Channel includes histories, photos and specs for classic truck models. Explore Classic GMC truck lineups. Advertisement The Classic GMC Trucks Channel includ...Nov 1, 2013 · 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. Dec 7, 2023 · 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. My 2011 Chevy Traverse is moving in high gear and running at low RPMs (~2,000). However, when I “very lightly” accelerate (just barely put pressure on the accelerator) to maintain my speed (typically on an incline) and not cause the car to drop a gear, the the car will “shudder”, “bog”, “buck”, “spitter”. If I apply more gas ...

4. Low Oil Level. The engine needs a specific amount of oil to keep proper lubrication in the motor. With this lubrication, the metal parts won’t rub together. However, when the oil drops too low, you may start to hear a rattling sound. It can get significantly worse while accelerating. 5. Low Oil Pressure.Start the car. Idles at about 1200...drops to 600 once warm. Vibration is felt in steering wheel and pedals. Rev to 800-1000 smooths out a bit. Drop back to 600 rpm...vibration back. Put the car in drive and accelerate, no problems, smooth, no vibration at speeds.Jul 28, 2020 · 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. If you shift it down a gear or go to accelerate where it downshifts it will go away. Ask Your Own GMC Question. If it is a misfire you will typically feel it more when accelerating hard and it had a shudder. patrick capp. Category: GMC. Satisfied Customers: 4,050. Experience: Expert. Verified.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?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 …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 ...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.

The cheeseburgers from New York City's Shake Shack are so beloved by burger aficionados that even 12-hour Manhattan visits demand a wait in the Shack's imposing line. One burger lo...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 …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.Nov 25, 2019 · Clunks usually mean a mount is not tightened or broken. Could be motor mount, suspension bushing, etc. One way to check for motor mount is to put it in gear, press hard on the brake, and hit the gas. If it clunks, then your motor mounts need replaced. Little friendly tip for ya. When driving around 60mph there is a shake that can be felt in the steering wheel. It gets worse when accelerating; you can take your hands off the wheel and …

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August 22, 2022 by John. If your GMC Acadia is shuddering when you accelerate, it’s likely due to a problem with the torque converter. The torque converter is what transfers power from the engine to the transmission, and if it’s not working properly, it can cause all sorts of problems. Fortunately, there are a few things you can do to try ...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 …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 …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.

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 …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.Mar 28, 2023 · 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 ... 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 ...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.Aug 27, 2011 · I have 2008 GMC Acadia. I just had the vehcile get the 100,000 maintanence done to it. Since the service, the vehcile will shake or shimmer when accelerating between 25 and 35 miles per hour. I took it to my nearest GMC service department, but they have no idea what is causing it. I took a test drive with the mechanic, and of course it did not ... My 2009 AWD has a vibration / rumble that starts around 65mph and gets bad around 70mph. There is a low frequency roar that leaves you with a serious headache; it is very noticeable and you don't have to point it out to anyone in the car. You can get the vehicle up to speed and put it in neutral and the vibration does not change at all, so I ...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.They say rules are made to be broken, but you have to understand the rules before you can break them effectively. Cocktailing has a lot of rules, and a lot of rule breakers, but St...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.

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.

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.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 Acadia will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires.If you shift it down a gear or go to accelerate where it downshifts it will go away. Ask Your Own GMC Question. If it is a misfire you will typically feel it more when accelerating hard and it had a shudder. patrick capp. Category: GMC. Satisfied Customers: 4,050. Experience: Expert. Verified.We start to accelerate and the car moves, then there's a hesitation in the acceleration. Pressing the gas pedal further gets it out of this lull, as will waiting for a 1/2 second with the gas pedal in the same position. We purchased the Acadia on December 21, 2012, and it has exhibited this problem from day 1.My second Acadia has been very reliable and very few problems until about 6 months ago. It started vibrating/shaking very noticeably at about 60-65 mph and wouldn't let up until close to 75-80. I took it in for tires to be rotated and balanced and it did not help the problem. I then went ahead and just bought new tires, and this did not help ...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. Oct 18, 2013 · 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.

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gig229. 208 posts · Joined 2007. #4 · May 23, 2013. The hissing noise is a refrigerant leak in the AC system. Your dealer will need to run a leak test on all the connections, hoses, and both evaporators to determine where the leak is. But I will tell you that on my 09 Enclave, both the front and rear evaporators had to be replaced as they ...Without a bit more info. . . difficult to say. But above are all possibilities. 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. Like. J.Model. Year. Username. E-mail. The 2013 GMC Terrain has 1 problems reported for vibration when accelerating. Average repair cost is $3,150 at 132,750 miles.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.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 ...I have 2008 GMC Acadia. I just had the vehcile get the 100,000 maintanence done to it. Since the service, the vehcile will shake or shimmer when accelerating between 25 and 35 miles per hour. I took it to my nearest GMC service department, but they have no idea what is causing it. I took a test drive with the …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...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.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.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 …Hesitates to accelerate. Needs higher RPMs to get to speed. Here’s how a few owners on AcadiaForum.net described their experience: “I’m the second owner of a … ….

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.Discover how accelerators can help your startup grow better and learn how you can apply to accelerators around the globe Trusted by business builders worldwide, the HubSpot Blogs a...Nov 1, 2019 · Here are the most common issues that cause your Acadia to jerk when accelerating: 1. Misfiring Engine. A few things can cause an engine to misfire. More often than not, it’s going to be the spark plugs or coil packs that are the culprit. A misfire is the most common reason your GMC Acadia jerks while accelerating. 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 Sierra 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 instead of coil ...If you shift it down a gear or go to accelerate where it downshifts it will go away. Ask Your Own GMC Question. If it is a misfire you will typically feel it more when accelerating hard and it had a shudder. patrick capp. Category: GMC. Satisfied Customers: 4,050. Experience: Expert. Verified.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 …Subject: Shudders or Shakes at Low Speeds Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick Enclave 2019 2023 LFY M3W Cadillac XT5 XT6 2020 LGX M3W Chevrolet Blazer 2019 LGX M3V Traverse LFY M3V GMC Acadia 2020 LGX M3W Involved Region or Country United States, Canada, Mexico, Europe, Kazakhstan, …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!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. Gmc acadia shakes when accelerating, 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 ..., My Acadia SLT has recently been making a rattling noise when turning left and during acceleration. When Parked if I accelerate the rattling noise also can be heard but diminishes when the engine goes back to normal idle. Noise comes from the front of the engine lower right, just underneath the canister vapor valve., They say rules are made to be broken, but you have to understand the rules before you can break them effectively. Cocktailing has a lot of rules, and a lot of rule breakers, but St..., 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 Envoy will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires., 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., 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., 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 ... , 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..., At last, if you encounter a noise when accelerating with your GMC Acadia and this noise which could be a cliking sound tends to reduce when you disengage (press the clutch pedal), then one of the wear parts of your clutch system may be the cause. Indeed, the clutch release bearings must be swapped almost every 120 000 / 130 000km., 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., The first electric Hummers will be making their way to their new owners this holiday season. According to Autoblog, GMC boss Duncan Aldred has announced that deliveries of the Humm..., Jul 28, 2020 · 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 Sierra 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 instead of coil ... , If it only happens when going up a hill around 30 mph that is a symptom of a worn CV axle. I'd expect around a $400-$500 repair at a shop. Other things that would be performance related could be transmission or ignition coil but both of those would usually turn on check engine light. Let me know how it goes or if you have questions, thanks. Dan., 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., 2014 GMC Acadia - Front end shakes under acceleration. Ok, time to vent... NEW 114 miles: We bought a new 2014 Acadia, SLT2 FWD in November of 2014. This thing is loaded; double moon roof, tow pkg, rear DVD heated/cooled/memory seats the whole 9. The ideas was to get my wife into a nice, new car as we hoped it would last for years to come as we ..., 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. , Without a bit more info. . . difficult to say. But above are all possibilities. 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. Like. J., It may be time to shake things up with new tactics and platforms. Here are 10 Ways to Shake Up a Stale Small Business Marketing Strategy. If you have a small business, there’s a go..., 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 …, The most common causes for slow acceleration in GMC Acadia are clogged air filter, dirty mass air flow sensor (MAF), clogged fuel filter, fuel pump malfunction, …, Another potential cause of a rattling engine noise in your GMC Acadia is piston slap. Piston slap typically occurs as a result of wear on the piston and the cylinder walls, causing the piston to move side-to-side and making contact with the cylinder wall. Piston slap is more commonly seen in vehicles with higher mileage., In this article, I have explained the most common causes of a car sputtering when accelerating and how to address them. 6 common problems that are responsible for a “car idles fine but sputters when accelerating,” including a faulty fuel system, faulty mass airflow sensor, worn spark plugs, a faulty throttle position sensor, faulty ..., 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., 17 posts · Joined 2016. #1 · Mar 23, 2016. While test driving a 2012 Denali Acadia AWD with 20" wheels about 6 months ago, we had vibration/jerking in the steering wheel. The dealer was very helpful and said it seemed to be something with the tires. So they ended up changing all the tires and I got a Pirelli Scorpion Tire., My 2011 Chevy Traverse is moving in high gear and running at low RPMs (~2,000). However, when I “very lightly” accelerate (just barely put pressure on the accelerator) to maintain my speed (typically on an incline) and not cause the car to drop a gear, the the car will “shudder”, “bog”, “buck”, “spitter”. If I apply more gas ..., Hesitates to accelerate. Needs higher RPMs to get to speed. Here’s how a few owners on AcadiaForum.net described their experience: “I’m the second owner of a …, I have a 2017 Acadia Denali AWD with 113,000 miles. The shuttering started in June 2023 and happens at the lower speeds. You can see the speedometer and tachometer shake around 25 - 35 mph when accelerating - most prevalent when accelerating uphill. Feels like driving over the grooves on the side of the highway (best way to describe the feel)., 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., 12 posts · Joined 2012. #1 · Feb 21, 2016. I just noticed that the other day my 2008 Acadia with 130,000 miles has a slight hesitation or stutter during mild acceleration which typically occurs around 1800 RPM. The transmission was replaced when it was under warrantee, and we just got the transmission fluid service from the dealer 2 weeks ago., Of of the metal clutch discs in the clutch pack will wear out due to excessive heat, and the transmission must be rebuilt or replaced to correct the concern. Again, diagnosis is a must, just letting you know one of the issues that circulates about this transmission. Shudder seems to correspond to acceleration but also seems to occur right ..., 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 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., Jun 13, 2018 · 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.