Buick Encore GX 2020–2024 — technical service bulletin
Bulletin 20-NA-121 · NHTSA communication 10251350 · issued Feb 27, 2024
Technical service bulletin
communication type
Wheels
component
2020–2024
model years
9
vehicle entries
Official summary
This service bulletin provides a procedure to locate and fix a possible leak in the roof area due to missing sealant to correct customer concerns of Various Electrical Issues, No Start, Stall, Brake Lamp Not Off, Radio Inoperative, Remote Key Inoperative, Malfunction Indicator Lamp (MIL) Illuminated with Possible DTCs.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.