Assist Problems of Buick Enclave

On 7/20/2025 the following warnings were displayed: brake system warning light (brake), abs warning light, lane keep assist light is white, automatic emergency braking disabled light stayed on, traction control system (tcs) electronic stability control light stays on. Messages: auto hold unavailable, service brake assist, service esc, service stability control: your vehicle may be hard to control in certain driving conditions, schedule service soon. On page 103 in the owner's manual the warning for the brake system warning light said driving with the warning light on can lead to a crash. Have the vehicle towed for service. I had it towed to a local GMC /Buick service department. My safety and the safety of others were put at risk if the car did not brake. Could have led to a crash. The problem has been confirmed by the dealer. They indicated the brake master cylinder needs to be replaced. ( 7/28/2025 I was told it was on back order, when available is unknown) warning lamps etc have been described above. I had just pulled into the driveway of a friend and got all the warning lights.

In driver info center messages displayed are esc “this is anti lock cracking system not working”. Steering assist reduced “this is lane departure steering assist not working” parking brake. “not working” also cruise control is not working Buick service tells me this has happened often enough in other vehicles that there is a repair bulletin on it. Also the initial cost to repair is $3000 + if this bulletin repair fixes the problem if not there would be more costs. This vehicle is within the 36 month bumper to bumper warranty period but has recently exceeded the 36000 mile warranty threshold. I have already paid for the initial part so it could be ordered.

See all problems of the 2023 Buick Enclave 🔎.

This car crosses the line before the lane keep assist does anything. The car nearly hit an oncoming car. I asked the koons tysons Buick service rep about it and he said he has heard this from a number of people but noting has been done. It seems like a software patch is necessary to make this safe.

See all problems of the 2021 Buick Enclave 🔎.