GM has known about the issues with their transmission in the 2014 -2017 Buick Enclave models. They were found under NHTSA Technical Service Bulletin: 18-NA-358 dated October 2020. I have reported this problem to GM, with the information that they requested. The issue here is that the manufacturer currently has a class-action lawsuit filed against it and will have another if they refuse to acknowledge the failures of their transmission in this vehicle. The following expert from the TSB states the following: Some customers may comment that the vehicle may have a severe launch shudder in 1st gear from a stop, or while driving along when in 4th gear, or during the 2-3 upshift or 3-2 downshift. Some customers may also comment on one or more of the following conditions: -?? Flare -?? Slide/bump -?? Slip -?? Harshshift The problem here is that with the advanced knowledge they had, they knowingly and willingly refused to issue a recall on these vehicles, which has severe outcomes for owners. My wife, who was driving the Enclave was nearly rear-ended at highway speeds when the vehicles behind her were in proximity to her slowed vehicle. The vehicle began to shudder and again when she began driving when the traffic moved. The transmission slips from gears and I verified this myself taking a test drive if the vehicle. This could have led to serious injury or death to my wife! GM refuses to provide any relief from this issue, nor do they wish to accept any amount of responsibility. My question is this, how can GM a take any part in a recall of a major safety component as the airbag system of a vehicle, regardless of mileage, yet they are not held to account for one of the largest components of a vehicle to get out of a hazardous situation when stopped or accelerating? I am asking the NHTSA to find GM sat fault for producing inferior transmissions in the 2014-2017 Buick Enclave and provided deeply discounted pricing or free remediation as a recall for these vehicles.

- Batavia, OH, USA

The Buick did a hard turn to the left, without any action of the driver, and went into an uncontrollable counterclockwise spin and hit the concrete divider. Prior to the accident the Buick was traveling in the right south bound lane of US 75 with the traffic flow. There was a light rain and no one was changing lanes or speeding. No other vehicle skidded or went out of control. The cause of the accident was not the weather or driver error. Possible causes for the accident are: faulty steering system, faulty antiskid system, or a computer glitch. The dealer would not talk to us. The Buick has not been inspected. No one will inspect it.

- Mckinney, TX, USA

Transmission is shifting hard. Was shifting hard only on a turn but is now shifting hard as you are just driving on a straightway.

- Lenoir City, TN, USA

The transmission is slipping and failing to shift into the next gear on acceleration. The problem is intermittent and has been progressively getting worse over the last 7 months. Now it is at the dealer and they won't cover the repair because the warranty expired 2 months ago. The exact same thing happened to my prior Buick Enclave which I traded in (because of this problem) when I purchased my current vehicle.

- Stevenson Ranch, CA, USA

Takata recall in the almost 3 years I've owned my 2014 Buick Enclave, there have been 2 occurrences with the same transmission issue. The codes are: P0700, P182E and P0306. The engine light comes on and flashes for roughly 30 seconds. The first occurrence was in the city, about 35mph and the second was on the highway with a speed of 60mph. Both times I've pulled off the road and the light disappears. When I take it in, the codes are pulled and cleared. The mechanic can not get the code to reappear. My Buick has never shifted right, noticing padding and jerking before and after switching gears. The mechanic said this is a common problem with these transmissions and the repair bill will be around $3,500 for a new transmission. A 5 year old vehicle should not be having these issues!! buying a 2 year old vehicle at $28K, owning it for less than 3 years and having to replace the transmission does not sit right in my book. GM needs to fix this transmission problem and soon!

- Wausau, WI, USA

The contact owns a 2014 Buick Enclave. The contact stated that after driving into the garage and switching the gear shifter to the park position and after releasing the brake pedal, the vehicle suddenly shifted into reverse and crashed into the garage door. No police report or injuries were reported. The vehicle was towed to the local dealer brads cottage grove Chevrolet (2775 row river rd, cottage grove, or 97424) who diagnosed that the transmission shifter cable was faulty and needed to be replaced. The manufacturer was notified of the failure but no assistance was offered. The VIN was not available. The failure mileage was 40,000.

- Springfield, OR, USA

Shortly after taking ownership of the vehicle, we noticed a "clunking" within the transmission when going up a small incline at approx 15 mph. The problem has persisted for years and we've had the dealer investigate multiple times with no remedy. The issue is now more visible at highway speeds between 60 and 65 mph. We recently dropped off with the dealer where they applied a software patch which has slightly reduced the issue, but has not resolved. We still have a "clunking" transmission at 15mph up an incline and at highway speeds. I have seen others reporting the same problem.

- Middletown, CT, USA

I've experienced ongoing intermittent issues with the transmission slamming into gear, around 2nd and 3rd gear, and changing the transmission oil as not alleviated the issue.

- Lanahm, MD, USA

Power steering fails momentarily (during voltage drop?) & suddenly returns mainly during slow speed turns.

- Owensboro, KY, USA

The contact owns a 2014 Buick Enclave. While driving up an incline at approximately 15 mph, the vehicle began to jerk when shifting between first and second gear. The failure occurred 12 times in cold weather temperatures of 30 degrees or less. The vehicle was taken to the dealer who was unable to duplicate the failure. The manufacturer was notified of the failure. The approximate failure mileage was 5,000. Updated 05/18/16

- Framingham, MA, USA

On 11/30, we turned on the car, the engine light on the dash came on to service engine. We took the car to the dealership. We were informed the problem is in the transmission. It needed a torque converter, a pump and new gaskets. They've had the car since 12/2, and informed us they were waiting for the gaskets which will possibly be two more weeks.

- Ypsilanti, MI, USA

The contact owns a 2014 Buick Enclave. While attempting to accelerate, the automatic transmission failed to properly change over and the rpms raced along with a delayed response in which the vehicle jerked upon the gears changing over. The vehicle was taken to the authorized dealer numerous times and they were not able to replicate or diagnose the failure. In addition, the contact stated that the sunroof fractured without warning. The vehicle was taken back to the dealer for further inspection and diagnostic testing. The VIN was not available. The manufacturer was notified of the failure. The failure mileage was not available.... updated 06-02-15 the consumer stated the dealer replaced the sun roof. The transmission, gps, and the turn signals were not working properly. Updated 11/6/15

- Perkasie , PA, USA

I put the car at 'N' gear position, but the car went backward. I stopped the car, took out the keys, and restarted. The second time, about 2 months after the first incident, the car started to roll when I put the car at 'P' gear position.

- Lutherville, MD, USA