2020 Buick Encore GX Complaint Log

I am writing to formally report a serious mechanical failure involving my vehicle and to request further review and assistance. While operating my vehicle, it unexpectedly stalled in the middle of an intersection, creating a significant safety hazard. At the time of the incident, the check engine light illuminated and the RPMs surged to a range between 6 and 8. I was able to safely move the vehicle to the side of the road, place it in park, and have it towed to a dealership for inspection. Following their evaluation, I was informed that the transmission requires replacement. I have since become aware of a recall related to transmission issues; however, I was advised by a Buick representative that my VIN is not included in the recall. Given that my vehicle is experiencing the same or a substantially similar failure, this determination raises concerns and warrants further review. I have consistently adhered to all recommended maintenance schedules and have taken proper care of my vehicle. Based on the circumstances, I respectfully request a thorough reassessment of my case, including reconsideration for coverage or assistance with the necessary repairs. I appreciate your prompt attention to this matter and look forward to your response.

My 2020 Buick Encore GX which has only 30,600 had the "Shift to Park" message appear on the dashboard screen and my car was not turning off properly. I read online that it is a widespread known issue: however, I had to pay 630.14 to fix the GM well know widespread issue so I can turn off my vehicle. This should be covered FREE of charge by GM as they are aware of the issue affecting the 2020 Buick Encore GX.

My 2020 Buick Encore GX is showing a message with accompanying ding ding sounds "Shift to Park" after I put my car in park. This malfunction will not allow the car to be locked. I see there are many complaints and lawsuits that GM has not attended to. How do we get GM to initiate a recall on something they are and were well aware of.

2020 Buick Encore GX; pulling out of a service station, my check engine light illuminated, and message on cluster stated: Engine Power Reduced. I loss throttle response for accelerating. Accelerator pedal was pushed to the floor and no acceleration. Vehicle entered limp mode. Drove 15 miles from service station to my home, in limp mode, unable to accelerate. Called a technician mechanic who check for Diagnostic Trouble Codes; DTC P0299 Turbocharge/Supercharge "A" Under boost condition; is Confirmed, Pending, and Permanent code. Loss of power to Power Train, unable to accelerate.

SHIFT INTO PARK WARNING WHEN CAR IS IN PARK

To Whom It May Concern, I am submitting a formal complaint regarding a recurring issue with my 2020 Buick Encore GX (VIN: [XXX] ) related to the “Shift to Park” defect, which is documented in GM’s Technical Service Bulletin 23-NA-119. My vehicle intermittently fails to recognize when it is in park, preventing me from turning off the engine and causing safety and usability concerns. Despite following GM’s recommended steps and scheduling an appointment through Buick Customer Care, I was charged $195 for a diagnostic fee and quoted $495 to replace the shifter assembly. The dealership confirmed the issue matched the bulletin, yet refused to offer goodwill coverage or reimbursement. This expense is a significant hardship. I am still making payments on this vehicle, which is barely five years old. I previously owned a Honda for 20 years without encountering issues like this. Unfortunately, this is not the first time I’ve faced a manufacturer-documented defect with no support. My previous vehicle, a Mitsubishi Outlander, suffered from a known transmission issue that was later part of a class action lawsuit. Despite experiencing the same symptoms, my VIN was excluded. The cost of repair outweighed the value of the vehicle, and I ultimately had to walk away from it as a total loss—leaving me without a car. I am deeply disappointed to now face a similar situation with Buick. I chose this vehicle expecting reliability and support, and I’ve done everything asked of me to address this issue responsibly. I believe GM should be held accountable for this known defect and the financial burden it places on consumers. Thank you for your attention to this matter. Sincerely, [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Buick Encore GX. The contact stated that while driving at an undisclosed speed, the vehicle began to shake with abnormal sounds coming from the engine compartment. The check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed and it was determined that the turbocharger had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the dealer for further assistance. The approximate failure mileage was 51,220.

Powder Train When parking the car in garage, placed vehicle in park, then turned vehicle off, received a message on dash "SHIP TO PARK". The car was in park. Even thought the engine was off, it would now allow radio or lights to shut off util message goes off. Some times several minutes for it to go out. Taken it to the GM dealer ship was told shifter assembly needs replaced. I have learned their currently is a a class action suit for this issue at this time. My car was under warranty for 5 years and was still under the warranty when this happened to me. I don't feel I should have to pay $491.00 out of my pocket.

When I put the car in park and go to turn off the car, I'm getting a "Shift to Park" error when the car is already in park. This error will not allow the car to shut off. I have to shift it back out of gear and then back to park several times before it will recognize that it's in park and allow me to turn off the car.

Getting a shift to park error when placing the gear in park. It’s not recognizing the car is already in park and I have to make several attempts until it finally goes away each time.

I am getting a shift to park message on my Buick. I have to shift through heats multiple times to get it to stop.

I was traveling to school when my breaks didn’t work I tried them twice and I crashed into another vehicle. And the month or march I took it into to Buick for break issues and they said everything was fine.

I have started to receive multiple 'Shift to Park' messages when attempting to turn off my vehicle after already being placed in park. To get the car to register that it is indeed in park, I have to re-shift or slam the gear shift into place. I was advised that the issue was with the shifter assembly which prevents the vehicle from recognizing whether or not it is in gear. I had no issues with the vehicle prior to the message and I get my vehicle serviced regularly. This malfunction can lead to battery drain, failure of a vehicle to shut off completely, or difficulty starting it.

Shifter malfunction not allowing transmission to shift to park without multiple attempts. Car lurches at times while attempting to resolve problem.

The gear shift when placed in park and the car ignition turned off would cause an alarm to go off and a message to show up on the dash that the gear shift should be placed in parks (which it was in already). When I contacted the GM in CA dealer and talked to him he advised me it was a common problem and the was a shortage of parts to repair but bring it in because the alarm would where down the battery. After jamming the gear shift in park many times I was able to stop the alarm. Them I drove from CA to NV to the Buick dealer there and told me the same thing that the GM dealer tome about a shortage of parts because of this being a common problem and that he would try and get GM to pay for repairs. When I picked up the car I was advised that although this was a common problem GM was not going to be a recall so I had to pay the $558.40 to repair the gear shift. The recipt shows: "SHIFT CONTROL ASSEMBLY REPLACEMENT - found intermittent failure to register shifter position of park - Need to replace shifter assembly "

I was at a stop light and the light turned green, I preceded to press the accelerator, I was just starting to move forward and the, peddle seemed to take over with my assistance went all the way down and began speeding up. I tried breaking and the car just kept going and not wanting to slow down and kept gaining speed, I had to put car in neutral and turn engine off. Same day, same trip about 4 miles down the road, I began to slow down (35mph) due to a turning vehicle and when I was clear to accelerate once again, it happened again, again, I tried the breaks, and the car kept fighting the break and kept gaining speed, once again I had to put the car in neutral and turn off the engine, the speeds reached 65 mph. before I was able to place in neutral and turn off the engine. No warning lights, car ran normally until those terrifying moments, no check engine lights on before or after the above experiences. My husband and I's safety was put at risk due to the road's travelers and Deadmans curves and cross sections, it put us at risk with a higher chance of crashing into a vehicle or accelerating before being able to make a turn safely. As soon as I made it home, I called the Buick service center and delivered the car the following morning to the service technician. It is at the Ross Downing Service Station today.

This is a new issue. Upon exiting my car last night. My car would not shift into park. Everytime I cycled the engine and shift to different gears then park. The car stated it need to be shifted into park still. Without it being in park The car could possibly roll down the hill. Also without it being able to be shifted into park. It continued to flash and keep lights and warning sign on. If not being able to shift into park. I could not leave my car until it recognized the car was in park. The car battery would have drained.

I purchased a car from Carvana , a few days later the airbag light came on , I was instructed by Carvana to call the warranty place and let them no there was a problem. They instructed me to go to Levanders body shop in GrandIsland Ne . The body shop ran a diagnostic and could not find why the light was going off so they removed the passenger knee panel to which they found the wires were taped and the airbags and wire harness were missing , they decided to further check and found ALL the airbags in the car were missing and so were the wire harnesses.This obviously was not stated in the purchase of the car. Had that light not came on I still would not know. I drove it for a week with my child in the car thankgoodness i didnt get an a accident . i have pictures but it wont allow me to upload for some reason

The contact owns a 2020 Buick Encore GX. The contact stated that while shifted into reverse on several occasions, the brake was depressed and there was an abnormal foghorn sound coming from the driver’s side rear wheel. The vehicle was taken to a dealer however, the failure was not duplicated. The vehicle was taken to the residence where the rear driver’s side wheel was removed. The caliper was removed, and the contact became aware that piston inside the caliper had fractured in half. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 101,000.

My vehicle is undrivable. Multiple times per trip the check engine light comes on and I see multiple messages come on the driver information center. These are: Service ESC Reduced Power Service Adaptive Steering System The codes that come up are: P0089 for low fuel pressure P00C6 This results in an immediate speed reduction nearly causing multiple collisions with people following me on the highway. As a result I have been using a code reader to clear the codes so i can continue driving. I refuse to drive on busy highways so I am always forced to drive back roads. This needs to be figured out ASAP!

The dash shows an error message "Shift to park" whenever I put the car in park. This message last for about 10 minutes or more locking me in the car. The car does not shut off until the error is gone. I have to continue starting up the car, placing it in park, then cutting it off to see if the message is gone.

For the past several months, my 2020 Buick Encore has been giving me a message to shift to park even though I placed my vehicle to park. This then does not allow my car to shut off, because it believes I am still in drive. I tried making an appointment with the dealership a month ago and their earliest availability was today, 12/10/2024. I took my Buick in, and they wrote me and stated that they figured out the issue and the shifter control would need to be replaced and was not covered under my powertrain warranty. I see this has been an issue on several Buicks and I even found the service notification Buick sent out for this specific issue. This is a definite safety issue since I cannot turn my vehicle off because it does not believe I am actually in park. This needs to be recalled for these vehicles since Buick is aware of the issue. I am getting the shifter control replaced, but due to it being a safety concern, it should be covered by Buick. Instead, this is being told to me that it is a $400 replacement part and not covered under Buick's warranty. I wanted to file a complaint so NHTSA can be aware of this issue.

The contact owns a 2020 Buick Encore GX. The contact stated while the vehicle was parked and attempting to turn off the vehicle, the message “Shift to Park" was displayed. The vehicle was taken to the dealer where it was diagnosed and determined that an unstated part in the gear shifter needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 34,643.

The vehicle will flash a message “Shift to park” when the car is already parked. This is a known issue across multiple GM brands including Chevy and Buick. The dealer diagnosed the issue and said that it needed a new shifter and wiring harness. Parts and labor for the repair are going to be $700.

I bought this vehicle in 2024, I have been having issues one after another with it, I have taken it to the dealer and all they keep doing if fixing the problem and couple of months it happens again. I am really worried about my safety if I keep driving the vehicle. One problem from the battery to the shift sensor. Thank you

Since the repair, the original claim no. 11619901. the checked off stuff no longer works. This lapse has occurred around sep. 20 to present day

When I park the vehicle doesn’t recognize that I switched my gear to park and it won’t let me turn my vehicle off and when I have my foot on the brake it feels like sponginess

Shift to park! When I put the car in park it tells me “shift to park” so I’m unable to turn my car off. It’s happening more frequently.

The dealership replaced in the “fish body electric system “ to make the shift to park “flag not appear It is available for your inspection. Please check facebook and a list of problems with the vehicle are listed The vehicle was in the driveway not affecting any one. The problem was reviewed by the selling dealer and referred to another dealer to fix. Other than the flag appearing where the speed of the vehicle when on the road. Only the dealership saw the part and inspected it No warning lights The repair was made by Ed Rinke in Centerline,

When parking car in garage, placed vehicle in park, then turned vehicle off, received a message on dash " SHIFT TO PARK". The car was in park. Even though the engine was off, it would not allow radio, or lights to shut off until this message goes off. Some times it takes several minutes for message to go out. I have taken to GM dealership, and was told shifter assembly needs replaced ($500). I have learned their currently is a class action suit for this issue at this date.

The contact owns a 2020 Buick Encore GX. The contact stated while driving at various speeds, the vehicle lost motive power while depressing the accelerator pedal. The check engine warning light was illuminated. The vehicle had been taken to the dealer on several occasions, and several repairs were performed on the vehicle. The contact stated that the turbo was replaced twice; however, the failure returned after the repairs. The vehicle remained in the possession of the dealer for a month and the dealer determined that the mechanical outline was incorrect, and that the turbo had been installed incorrectly. The manufacturer was notified of the failure but offered no assistance. The vehicle was repaired; however, the contact expressed concern that the failure might occur again, and was fearful of driving the vehicle. The failure mileage was approximately 60,000.

The contact owns a 2020 Buick Encore GX. The contact stated that while parking the vehicle, the gear shifter was shifted into park(P); however, the “Shift to Park” message was displayed. The contact was unable to turn off the vehicle and drove to the residence. The message was no longer displayed after the contact parked the vehicle at the residence. The failure recurred on multiple occasions. The dealer was made aware of the failure and referred the contact to the manufacturer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 24,000.

"Shift toPark"message is displayed on the dic shifter control leaver

I was driving on the interstate on June 7, 2023 heading to work doing the speed limit of 60 MPH and all of a sudden the check engine light came on and a message stated "Engine Power Reduced" and the engine literally dropped engine power immediately and thankfully there was nobody right behind me and I was able to get off the interstate to a safe place. I called the Buick GMC dealership where I purchased the vehicle and they said to bring it in. They pulled codes on it and it gave a code of "engine under boost" and they said they ran tests on it and could not find anything wrong after 3 days at the shop, they did a software update and told me to come and pick it up. Then not even a week later, I was driving and out of nowhere came the same engine light, message read "engine power reduced" and the engine lost power immediately and I called the Buick GMC dealership again and they said to bring it back in and it's there now. I called today to check in and they said they are going to test the Turbo on it and order parts, etc. but they still do not have a definitive answer as to what's wrong with it yet. I bought my 2020 Buick Encore GX new in November 2020 and it has about 26,000 miles on it. No recalls have been made on my VIN model - I am afraid to even drive this car again and get stuck somewhere away from help or at night - someone could have rear ended me when I lost power on the interstate doing 60 MPH and killed me!!!

I was driving on the interstate on June 7, 2023 heading to work doing the speed limit of 60 MPH and all of a sudden the check engine light came on and a message stated "Engine Power Reduced" and the engine literally dropped engine power immediately and thankfully there was nobody right behind me and I was able to get off the interstate to a safe place. I called the Buick GMC dealership where I purchased the vehicle and they said to bring it in. They pulled codes on it and it gave a code of "engine under boost" and they said they ran tests on it and could not find anything wrong after 3 days at the shop, they did a software update and told me to come and pick it up. Then not even a week later, I was driving and out of nowhere came the same engine light, message read "engine power reduced" and the engine lost power immediately and I called the Buick GMC dealership again and they said to bring it back in and it's there now. I called today to check in and they said they are going to test the Turbo on it and order parts, etc. but they still do not have a definitive answer as to what's wrong with it yet. I bought my 2020 Buick Encore GX new in November 2020 and it has about 26,000 miles on it. No recalls have been made on my VIN model - I am afraid to even drive this car again and get stuck somewhere away from help or at night - someone could have rear ended me when I lost power on the interstate doing 60 MPH and killed me!!!

We have two infants in car seats. The car does not have the car seat LATCH system in it. The instructions were followed in the cars manual for placement but none were found. There are indications on the seat where you should place the latch buckle but the latch welded hooks are not there. I took the vehicle to the dealership Buick Gee in Liberty Lake WA where it is leased and was also told there by the service manager and the sales team that there are no latch hooks to be found in this car for the car seat to attach to. They agreed that there should be some there and could be a mistake at the factory. The dealer manager also came out to verify the latch system was not in vehicle. He also went to look at the other vehicles of the same year make and model, all of which did not have the welded hooks in the car for the car seat latch system. When I worked at the fire department I thought this system was mandatory in all vehicles manufactured and sold in the USA after the 90’s. Thank you for looking into this production safety issue [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Spongy breaks. Gets harder to break as time goes.

The contact’s mother-in-law owns a 2014 Jeep Cherokee. The contact stated while his mother-in-law was driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the PCV valve needed to be replaced. The vehicle was not repaired. The contact stated that on another occasion while his mother-in-law was driving, the vehicle started sputtering, overheating, and lost motive power. The vehicle remained at the location. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 75,000.

Rear end accident. Distracted driver hit the back of my car at least at 40 mph. No airbags deployed.

The contact’s fiancé owns a 2020 Buick Encore GX. The contact stated while driving approximately 2 MPH, the vehicle was unable to stop while the brake pedal was depressed and the parking brake was activated. Additionally, the vehicle made grinding sounds while the brake pedal was depressed. The vehicle was towed to the dealer, and the dealer reprogrammed the brake system; however, the failure recurred. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 8,600.

While driving this 2020 Buick Encore GX with around 7,000 miles on the odometer, the entire electrical/electronic system shut down. Windows were inoperative, the AC stopped, the radio failed, the flashers did not work, etc. The only things that worked were the engine and brakes. I have no idea if the brake lights worked. I was able to drive the car to the dealership - Van Buick GMC in Scottsdale, Arizona where the car is now sitting and awaiting their inspection. In the 95 degree temperature here in AZ, I thought that I would die as I could not open the doors. I have since learned that I could have opened the doors by pulling the door handle twice. No one ever educated me on this. There were no advance warnings prior to the failure. This car is a death trap. Please NHTSA help me.

The contact owns a 2020 Buick Encore GX. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate immediately and stalled. Additionally, the EPC warning light was illuminated. The vehicle was taken to the dealer, who informed the contact that the fuel pump needed to be replaced; however, the part to do the repair was not yet available. The manufacturer was not made aware of the failure. The failure mileage was unknown.

The contact owns a 2020 Buick Encore GX. The contact stated that while attempting to stop, the brake pedal was depressed and it traveled to the floorboard causing the brakes to fail to stop the vehicle. The contact mentioned that the vehicle crashed into the rear of another vehicle. A police report was not filed. The vehicle was able to be driven to the contact residence however, the brakes failed again. The vehicle was towed to the dealer where the contact was unaware if a diagnostic test was performed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 45,000.

I live in Oklahoma so it’s hot then cold then hot again then colder the next morning. I had my defroster on while on my way to work and all of a sudden my window just cracks and spreads all across my window. I didn’t have a chip at all and there wasn’t even a vehicle in front of me. Idk if it was because it was real cold and had the defroster on but this still shouldn’t have happened. And they want me to pay almost $1000 to change it out because you also have to get the cameras readjusted correctly. GM should pay for this. It absolutely wasn’t my fault.

Engine light came on. There was a problem between the harness and the transmission. It took 6 weeks to rectify the problem.

Dealership, fixed brakes due to previous recall. Brakes continue to squeal and grind with every stop. Was informed by dealership that they can do no further repair because it is considered a noise and not a safety issue. Grinding brakes are a safety issue!!!

CAR HAS LESS THAN 30 (THIRTY) MILES ON IT; GARAGED SINCE PURCHASE BC OF PANDEMIC; STARTED OCCASIONALLY; BATTERY DEAD WHEN I TRIED TO GO OUT LAST WEEK; CHARGED BATTERY; DIED AGAIN; CHARGED AGAIN; CHECK ENGINE LIGHT ALERTED ONSTAR, WHO SENT EMAIL STATING PROBLEMS W/ENGINE & TRANSMISSION SYSTEM, POSSIBLE ISSUES W/FUEL MANAGEMENT SYSTEM, EMISSIONS CONTROL, MISFIRE CONDITION... ONLY 30 MILES! NEW CAR! JUST DROVE HOME FROM DEALERSHIP AND PARKED IT. TRIED CHATTING W/BUICK CUSTOMER EXPERIENCE, BUT THEY CUT ME OFF 3 TIMES OVER 2 HOURS, SO I GAVE UP THAT EXERCISE IN FUTILITY. DEALERSHIP IS UNPLEASANT; TRYING A DIFFERENT DEALER. GOOGLED RECALLS. THIS SOUNDS LIKE THE EMISSIONS SYSTEM RECALL ON THE 2021 ENCORE GX, BUT MINE IS A 2020. WHY WOULD A BRAND NEW, $38,000-CAR BE SO FRIGHTENINGLY UNRELIABLE? I TRADED IN TWO CARS AND SAVED MANY YEARS TO BUY THIS. I'M AFRAID TO EVEN DRIVE IT IN FOR SERVICE. MY DAD WAS A PATENTED ENGINEER. I MISS MY DAD.

I have only had the vehicle for a year. On multiple occasions the vehicle feels like it is slipping gears (more often when the autostop feature is turned on). On multiple occasions the vehicle has stalled out and would not do anything when pressing on gas- didn't even rev, did absolutely nothing. These stall outs happened crossing highways, at stop lights, stop signs, etc. There were no warnings prior to the incidences, though the vehicle did through an engine/transmission code afterwards, the code would go away. The first several attempts of taking it to the dealership (last year) as it is still under warranty- it was not checked. i was simply told it was a "glitch" and it was fine. They did not record in their system that i requested it to be checked either apparently. They only recorded that i brought it in for an oil change. They only checked into it this February after my boyfriend told them what it was doing. They kept it and replaced one part in the transmission. The vehicle continued to have the same issues and threw a code withing the first 5 minutes after picking it up. I took it back in- and they said it was doing the issues because of the code it threw. I told them it was doing it again before it threw the code. They said it simply needed a line vacuumed out, and then gave it back to me. It continued to have the same issues and stalled out again causing me to roll backwards onto the highway-into traffic. I took it back again. They kept it, and then told me they'd be replacing the entire transmission, but it is on backorder. Still no time frame when it will be repaired. They then told me i could have my car back and continue to drive it until the transmission comes in?!? I said no- it isn't safe, I just told you what happened and i could have been hurt or killed. I am not driving it, especially when i have my son to drive around as well! I have been without my car for at least a month now. I am paying for a car that i don't even have/can't drive.

THE VEHICLE HAS A SOFTWARE ANAMOLY ACCORDING THE THE DEALER THAT HAS MY SES LIGHT ON AND MY PRE-COLLISION ALTERS SEEM TO NOT BE WORKING SINCE THIS OCCURRED. THE SES LIGHT CAME ON 4/9/21 AND WAS TAKEN TO THE DEALER. I PICKED THE VEHICLE UP ABOUT 6 PM 4/12/21 AND THE LIGHT WAS ON STILL AND NOTICED IMMEDIATELY THAT THE PRE-COLLISION WARNING DID NOT WORK WHEN ANOTHER VEHICLE CUT ME OFF AND STOPPED SHORT IN FRONT OF ME. I DO NOT FEEL SAFE DRIVING THE VEHICLE. BUICK WAS SUPPOSED TO HAVE ANOTHER DEALER CONTACT ME TO GET A SECOND OPINION BUT AS OF THIS THEY HAVE NOT CONTACTED ME. THEY EXPECT MT TO DRIVE THE VEHICLE AND IGNORE THE LIGHT SO IF SOMETHING DOES HAPPEN I WILL HAVE NO WAY OF KNOWING BECAUSE THE LIGHT IS JUST ALWAYS ON. IF GM CANNOT KEEP UP WITH SOFTWARE UPDATES TO KEEP THEIR CUSTOMERS SAFE PERHAPS THEY SHOULD NO LONGER BE IN THE AUTOMOTIVE BUSINESS.

TL* THE CONTACT OWNS A 2020 BUICK ENCORE GX. THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE FAILED TO ACCELERATE AS NEEDED. ADDITIONALLY, THE VEHICLE INADVERTENTLY LUNGED FORWARD WHILE ATTEMPTING TO REVERSE INTO A PARKING SPACE. THE VEHICLE WAS TOWED TO BELLAVIA CHEVROLET BUICK (199 NJ-17, EAST RUTHERFORD, NJ 07073) THE BRAKES AND TRANSMISSION VALVES WERE REPLACED HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND THE TRANSMISSION WAS REPLACED AFTER RECEIVING APPROVAL FROM THE MANUFACTURER. THE DEALER FOUND 3 PIECES OF RUBBER INSIDE THE TRANSMISSION WHEN IT WAS TAKEN APART. THE MANUFACTURER WAS INFORMED OF THE FAILURE AND A CASE WAS FILED. THE FAILURE MILEAGE WAS 9,529.