2021 Buick Envision Complaints

got a check engine light on, took to dealer was a code 1098, the part is on back order told that it would not be available until middle of may, this happened to me at the end of march, now am learning that GM issued a recall on that part for their diesel Duramax engine, I think it is a GM wide problem.

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.

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.

11/25/25 DRIVING AT A SLOW SPEED, THE TRANSMISION WAS IN DRIVE. THE TRANSMISSION SLIPPED OUT OF DRIVE INTO NEUTRAL. THE CAR STOP. I PUT THE CAR IN DRIVE AND CONTINUED TO THE FINAL DESTINATION. 3 DAYS LATER IT HAPPENED AGAIN. TRANSMITION WENT FROM DRIVE TO 1 ST GEAR. I STOPPED THE CAR. I PUT THE CAR IN DRIVE. i CONTINUED TO FINAL DESTINATION. I FEEL VERY LUCKY THIS ALL HAPPENED WHEN THE CAR WAS GOING 5-10 MPH.

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.