2021 Buick Envision problems

“I think it may be either fuel propulsion system or it maybe something electrical. I don’t really know. It is available for inspection at this time as it has been at the car dealer repair shop for about a month. My safety is put at risk because about seven or eight out of 10 times that I attempt to start the vehicle, it will turn over by pushing the button, but will not start. I work until past dark many nights and my vehicle not starting is a big safety issue. The dealer said they reproduced it, but they have not been able to reproduce it again. Again, when I have it, it happens more than half the time. The dealer tells me they are communicating with the Buick engineers as the computer does not show any issues. They have so far not being able to determine the problem. there were no warning lamps or anything like that. It started happening occasionally when it was under warranty, I took it in twice to the dealer repair shop and they both said they could not reproduce the issue at that time. This is the third time I have brought it in and it is just past the end of my warranty.”

“When I start at a low speed it's like it does not know which gear to go in. You push on the gas and it does not move much and then launches forward. It has done this since I purchased it in April 2025 used.When in auto stop and the engine starts up with my foot still on the brake, sometimes it will lurch and buck. Buick dealer did do a transmission fluid flush and it still does the same thing daily.”

“The contact owns a 2021 Buick Envision. The contact stated that while driving at various speeds, the Lane Change Alert with Side Blind Zone Alert malfunctioned. The contact stated that while driving at an undisclosed speed, the side-view mirror illuminated erroneously while driving near a guard rail. Additionally, the contact stated that the side-view mirror had failed to illuminate while there was a vehicle in the blind spot. The vehicle was taken to the dealer several times, but the cause of the failure could not be determined. The contact stated that while the vehicle was parked in the garage, the contact inspected underneath the vehicle and noticed that the bracket in the rear passenger's side bumper fascia had detached and was hanging by the wires. The vehicle was taken to the dealer, where the bracket detachment was related to the failure. The dealer determined that the entire rear bumper fascia, the mounting brackets, and the clips needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and informed the contact that the dealer needed to contact the manufacturer for assistance. The dealer contacted…”

“Fuel pump and fuel control module failed. Car will not stay running. Currently at GM dealership. Confirmed and repair cost about $500. No warning lights.”

“245/45 R 20 all four tires are pitting and delaminating and the rubber is falling off. These are Continental pro contact 99 h. Mold number s-908480 and mold number s-50879. With a DOT number of 1lf0fbbxy 4820.”

“The contact owns a 2021 Buick Envision. The contact stated that while his wife was driving at an undisclosed speed on the freeway, the vehicle unintendedly accelerated around a corner, with the floor mat stuck under the pedal. The driver depressed the brake pedal for an extended time, but the vehicle continued accelerating. The driver pressed the park button, which slowed the vehicle, and the driver was able to pull over safely. There were no warning lights illuminated. The vehicle was taken to the local dealer, and the owner was informed about a possible recall. The dealer determined the failure was due to a stuck floor mat and sudden unintended acceleration. The front and rear brakes were replaced along with the floor mat. The floor mat was PN: 84734211. The manufacturer was not contacted. The failure mileage was approximately 37,000. The VIN was not available.”