general problems of the 2019 Buick Enclave

Start/stop function malfunctioned in the middle of the road, this has happened multiple times before and after replacing starter and battery, looked at by several mechanics. If I stop the car at a light or in traffic my car will dint turn back on or let me shift. Thus a safety issue because I could have been hit as it stopped in a busy road and people had to move around my vehicle. Engine light came on after failure and ceased the engine and I couldn’t move to the intersection. I also just got an oil change. They first appeared a few months ago and I had already gotten work done on it and it keeps happening.

On sept 6th the check engine light came on. A diagnostic test showed it was code p0442 related to the canister purge valve /solenoid. It also showed that it was a permanent thing that had been on there a while but when I look up my VIN number there is no recalls for it, but there is for other 2019 Buick Enclaves.

There are a couple of issues causing our concerns about the car. 1. Alternator - the alternator was reported went bad after only 4 years of usage, the dealer refused to pay the fixing cost for this. Due to the failure of the alternator, the car lost all the power in the middle of the road with our entire family in the car during the night, very dangerous. The car suddenly stopped at the road with 50mph speed limit. 2. Engine and catalytic converter pipe - the engine light is on due to abnormal feeling of the engine power, the dealer could not fix the issue in weeks and no rental car provided and we were asked to drive the car home and waiting for order status of the parts. 3. Exhaust system failure - the dealer mentioned the welding of the connection is bad ( still under warranty ) but refused to fix it but ask the customer to pay for the replacement and labor.

This vehicles exhaust system has two brackets that broke off the exhaust due to bad welds. There is TSB out for one of the brackets where they replace one cheaper pipe but no mention of the other. This TSB is for multiple years same issue, 2019, 2020, 2021 and 2022. Yet I was told mine is not included by dealer over the phone. There are literally thousands of complaints stretched across multiple sites with the brackets breaking off and exhaust leaking into the car after. This issue is right at the back of engine. It’s leaking exhaust right into the cabin from the venting system to the point we get sick now. It’s $800 I was told to fix the 2 pipes that are faulty. Just bought this 2 years ago and have owned many gm vehicles in last 35 years not one has ever had any issue with the exhaust system. And the one pipe that broke and cost $420 for just the part is also on back order cause they have replaced way more then normal and it’s also the part that’s not under any TSB yet.

I purchased my vehicle in 2020. In 2022 I experienced an issue where my car stopped in the middle of the road without warning. Despite several attempts to try and move the vehicle off of the road the police were notified and my vehicle was towed. The vehicle gave an error code that conditions not met for driving. One office tried to put the vehicle in neutral but the wheels locked and the shifter was locked as well. The battery has been replaced 3 different times since I have owned the vehicle. A mechanic friend of mine (who is a trainer for GMC) hooked his computer up to it and found no issues. He did find a loose wire which he the reconnected. I was able to drive my car for 6 months before the same thing happened, same situation the vehicle just stopped in the middle of the road only this time I couldn't turn the vehicle off, we had to manually disconnect the battery and again the police came out due to traffic hold up. My car was towed twice afterwards as I could get the car running for a few minutes before another error. To date my car has been sitting in my driveway since March of this year, this time it won't hold a charge and will not even start. Im not sure if this is an engine or an electrical issue. I did call 2 Buick dealerships that told me that it would take about 5 hours to diagnose the issue where I would be charged per hour at the mechanic hourly rate. At this point I think my vehicle needs to be recalled, even if I could get it repaired I dont feel safe driving it. Thankfully it stopped on a minor freeway and no major incidents occurred.

Evaporative emission canister purge, solenoid valve, yes. My safety was at risk due to stalling 3 different times on busy roads/intersections after refueling my vehicle. When the solenoid valve and canister fail when coming to a stop after refueling it causes the car/engine to flutter and completely stall then goes into neutral. It takes multiple restarts in order to even make the car go along with pressing on the gas. This part has been replaced twice by the dealership once at the end of March and again on the 10th of June. The first incident occurred mid-March, the second end of March and the latest incident occurred 7 June where I had to restart it 7 times before it would even drive, at that time my check engine light was on and it was making a loud noise. After this last replacement the vehicle was refueled and it started to flutter and idled hard, it will be taken to the dealership once again on the 20th of June. The vehicle has not been inspected by anyone other than dealership. There were no warning lights prior to the failure, the only indication was the car started to flutter prior to stalling. The most recent date is stated below.

The contact owns a 2019 Buick Enclave. The contact stated while driving downhill, he shifted to a lower gear and was depressing on the brake pedal however, the vehicle inadvertently accelerated. The contact also stated that the rpm was very high. The contact stated no warning light was illuminated. The contact stated he continued driving but had to stop 5 times to allow the vehicle to cool down. The contact took the vehicle to the local dealer. The mechanic found no failure with the vehicle. The contact stated that the failure persisted. The manufacturer had not been informed of the failure. The failure mileage was approximately 30,000.

Traveling at highway speeds car suddenly shifted itself into neutral and could not be engage back to any drive gears. Brakes were inoperable and accelerator was in operable. Finally came to a stop by coasting to the shoulder and waiting for speed to drop far enough to get vehicle to go into park.