The 2024 Buick Envista is included in a service bulletin issued by GM which describes a fix for a leaky roof seam that results from an incorrect brazing weld along the line where the roof joins the body panels, allowing water from the outside to trickle into the interior at one or more points.
The pinholes and/or cracks present in the incorrectly welded roof seam can result in multiple visual cues of a problem, including discoloration, rust or corrosion, and peeling or bubbled paint in the interior of the 2024 Buick Envista.
Rain water, snowmelt water, or washing water penetrating the roof seam of an affected 2024 Buick Envista unit can cause damage to several electronic systems as well. The crossover’s key fobs and its remote control door lock system may become non-functional. Additionally, the shifter light may stop working, depending on where the water enters.
The repair described in the service bulletin should only be carried out by properly trained and certified Buick service personnel. The General specifically warns against do-it-yourself attempts at fixing the problem, which could fail to correctly address it or affect the warranty. Buick Envista units produced between the start of regular production (SORP) for the model year and September 14th, 2023 are those potentially affected.
The vehicle should be inspected to confirm that pinholes or cracks exist in the roof laser brazing weld. Once these are located at one or more places, the repair technicians should use the correct sealant product to fill the holes. Touch-up paint may be need to repair paint damage caused by the leaks, as may replacement of minor electronic components if damaged by the water intrusion.
The repair usually falls under the coverage provided by the bumper-to-bumper warranty of the 2024 Buick Envista crossover involved. The service bulletin number is 23-NA-107.
As a reminder, the 2024 Buick Envista is the first model year of the first generation of the crossover offered on the U.S. market. The vehicle is motivated by the turbocharged 1.2L I3 LIH gasoline engine as the sole powerplant option, rated at 137 horsepower and 162 pound-feet of torque.