Gmc acadia shakes when accelerating

May 15, 2021 · 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.

If your car has a vibration when accelerating a damaged inner CV joint may be the problem, here's what to look for.Axle Kits - https://amzn.to/3tTrSd9Drive S...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.Black217 Discussion starter. 30 posts · Joined 2020. #1 · Dec 22, 2020. I have a 2018 GMC Acadia I got five months ago. It drives smooth, but sometimes accelerating slowly like in stop and go traffic, the transmission always seems to be in a low RPM range (1000-1300) and I get this Growl sound for a few seconds till the RPM rise.Engine idling but no power to accelerate can be caused by a range of issues, including a clogged air filter, a faulty fuel pump, a malfunctioning throttle position sensor, or a clogged catalytic converter. These problems can prevent the engine from receiving the proper amount of air or fuel, leading to poor acceleration and reduced engine power.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.

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. 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.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...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 ...The GMC Acadia and Saturn Outlook crossovers were both based on GM's front-wheel-drive, unibody Lambda platform. The Lambda vehicles -- which also included the Chevrolet Traverse a...

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.It's absurd that the entire vehicle should vibrate/shutter at 45mph and continue to do so as long as you maintain that speed. I'm hopeful that GM can figure out what to do about this problem. [/quote] Charlene, maybe you might want to try calling Lemay [262-694-1500], dealership in Kenosha, and make an appointment.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. 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 moreIf your car jerks when accelerating, it can be an indication of several current or potential problems. ... 9 Causes of Grinding Noise & Vibration When Braking. Next. 7 Symptoms of a Bad Camshaft Position Sensor (and Replacement Cost) 99 Comments. Mart says: ... Hi, my GM Acadia 2012 jerks while changing from second to third gear. The …

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1. Erratic shifting. One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop.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 …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 ...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. 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.Without any mechanical knowledge, get it to a shop for an estimate. 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.

In this video, Jake covers a comprehensive list of causes & solutions for a vehicle losing power when accelerating. This is probably one of the more frustrat...Help With Vibration in Steering While Accelerating. My wife has a 2016 Acadia Denail AWD with around 123K miles on it. Recently, we have had an issue where when accelerating, the steering will start shaking but will stop once we get going above a certain speed. We had a clunk in the front end and that turned out to be worn sway bar links.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. The car sounds like is is running fine but the vibration...Shaking can be a response to your anxiety symptoms. Here’s what you need to know. Anxiety can cause physical symptoms, such as shaking, but there are ways to manage it. You may thi...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 ... 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 …There are various reasons why vehicles shake while accelerating and some of them include a clogged transmission filter, a worn-out universal joint and low transmission fluid.

The turbo pressure sensor: This sensor will manage the pressure exerted in the turbo of your car, if it fails it may disrupt the performance of your turbo and deliver vibrations that you may experience within the acceleration of your GMC Acadia. If the turbo is punctured or ruined, the effect will be alike, the power supply of your turbo will ...

Cooke Discussion starter. Yes it is an AWD and it has 119000 miles,the noise happened 1 time about 4 weeks ago and didn't do it again for about 3 weeks and now it does it daily when you turn and slight acceleration there's a clunk in the rear end you can feel through the floor board,I removed the tire and everything seems to be tight and in ...This humming sound will change with the engine’s RPM. Unplugging the alternator from the wiring harness should stop the noise. 2. Power Steering Pump. A failing power steering pump. The power steering pump is a common reason your GMC Acadia might whine when accelerating.There are plenty of businesses that sell candles. Here is how Intentions By Christina is shaking up the candle business. There are plenty of businesses that sell candles. But Inten...Having the same issue on my 2020 GMC Acadia. Dealer performed the bulletin that pertains to 2020 but didn't fix issue. Mine is a little different in that most of the times it occurs from 1200-2000 rpms. But can occur at highway speeds IF you are accelerating (gently IE: not jumping on it).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.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 ...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.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 ...

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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 post · Joined 2023. #6 · Jan 30, 2023. Hello- My 2015 Acadia developed a shudder or skipping sensation from the rear wheels, primarily when turning left or right. GMC dealer diagnosed this as needing a rear differential clutch at a cost of 3200.00. 2800 for the part (??!!) and 400 for labor.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. Help With Vibration in Steering While Accelerating. My wife has a 2016 Acadia Denail AWD with around 123K miles on it. Recently, we have had an issue where when accelerating, the steering will start shaking but will stop once we get going above a certain speed. We had a clunk in the front end and that turned out to be worn sway bar …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?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. 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.2-Check the Transmission Fluid. Low or dirty transmission fluid can cause problems, including a whining noise when accelerating. Pop open the hood, locate the transmission dipstick, and check the level and condition of the fluid. If it’s low, top it up with the recommended fluid type for your vehicle.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 ...23754 posts · Joined 2007. #12 · Jun 24, 2011. Several other things can make your car shake while braking! These are: 'hot' (or hard) spots on the rotor (or drum), rust on the braking surface of the rotor (or drum), an over-active ABS system, tire (or wheel) problems, and. roadway problems.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 ...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 … ….

Fortunately, fixing a shuddering transmission is often as simple as getting a transmission flush to replace the contaminated transmission fluid with clean, fresh fluid. If the cause of your shuddering transmission is low fluid rather than contaminated transmission fluid, you may just need to fill up your transmission with more fluid until it ...August 5, 2020 by Jason. It can be very disconcerting if your GMC Acadia is starting and then dies. It is most likely caused by some type of issue with the electrical or fuel system. But, there can be other causes as well. Your Acadia’s engine needs 3 things constantly and in the proper proportion to keep running. Air.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.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. 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 ...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. 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. The worst part of eating boiled eggs is peeling the clingy eggshells off. This "bumper car" method of cooking boiled eggs makes several delicious eggs at once and also gets the she...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.2 posts · Joined 2015. #1 · Sep 5, 2015. Hey all, I have a 2011 v6 AWD Chevy traverse with 85k on it. I started noticing a slight vibration when turning the wheel. Typically occurs when pulling into a parking spot, out of lot at slow speeds, and when reversing with wheel turned. I recently had a road trip to Seattle and the vibration got much ... Gmc acadia shakes when accelerating, #1 · Apr 18, 2019. I have a 2012 Acadia with a new problem. I'm getting a short (2-3 seconds) shuddering/rumbling sensation under slight load, and at about 1,500 RPM's, …, 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., #1 · Apr 18, 2019. I have a 2012 Acadia with a new problem. I'm getting a short (2-3 seconds) shuddering/rumbling sensation under slight load, and at about 1,500 RPM's, …, 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 ..., Nov 10, 2022 · 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 ... , 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., A Particle Accelerator - A particle accelerator works very much like the picture tube found in a television set. Learn about the basics of a particle accelerator. Advertisement Did..., 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 ..., 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)., I have a 2016 GMC Acadia and I have had this issue happen twice and want to see if anyone has also experienced this. Both times I was stopped at a red light and noticed a brief rough idle when the light turns green and I begin to go the “Stabilitrack Off” light and ”Check Engine” light comes on., Nov 3, 2010 · If the vibration is being transmitted into the steering, it's highly likely the suspect is at the front end of your vehicle. Having the tires rotated, like what RBarrios has suggested will help identify if the problem follows the (problem) wheel to the back of the vehicle, or if the problem 'stays' up at the front-end. , drowell47 Discussion starter. 1 post · Joined 2019. #1 · Jul 28, 2019. Just purchased my wife a 2019 GMC Acadia. Vehicle has about 800 miles on it and I notice a whining noise when accelerating. This only occurs when the A/C is in the on position. Sounds like a compressor bearing. Will have to take in to the dealer for a diagnosis., 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 …, In this video, Jake covers a comprehensive list of causes & solutions for a vehicle losing power when accelerating. This is probably one of the more frustrat..., 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 ..., 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., 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., 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 ..., 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., January 22, 2024. 3 min. read. Genre : Business & Economy. Choosing Chennai as the site for its Global Business Services (GBS) hub, Adidas, the well-known sports footwear and …, 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)., 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., 2 posts · Joined 2010. #1 · Nov 24, 2018. I have a 2010 GMC Acadia SLT AWD with about 159,000 miles. Over time, there has been this front end creaking noise that continues to get worse. It only happens during low speed turning maneuvers (when accelerating) such as parking lots or drive way turn around. It seems to be worse during the cold ..., 2020 GMC Acadia V6-3.6L. Service type. Car jerks forward at high speeds Inspection. Estimate. $99.99. Shop/Dealer Price. $110.24 - $117.94. Show example GMC Acadia Car jerks forward at high speeds Inspection prices. When traveling at high speed, it can be particularly unsettling when your vehicle starts to jerk or surge forward without warning., Can meal replacement shakes help me achieve my wedding weight-loss goal? Visit TLC Weddings to find out if meal replacement shakes are the way to go. Advertisement Can meal replace..., GMC Canyon Involved Region or Country United States, Canada, Middle East Operations (MEO) Condition Some customers may comment that their vehicle is experiencing 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., 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., 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 …, Acadia Fluxuating RPMs. Within the last month my 2012 Acadia has starting having fluctuating RPM's when driving at a constant speed roughly between 50-60 MPH (1500 RPMs +- 100 RPMs). The shop I took it too said the spark wires were good and cleaned along with a throttle body cleaning. They did say the Acadia was randomly …, May 15, 2021 · 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. , 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., Inside a Particle Accelerator - Inside a particle accelerator you can find the computer electronic systems and the monitoring systems. Take a look inside a particle accelerator. Ad..., 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 ...