Buick Enclave 2019–2020 — technical service bulletin
Bulletin N232395300 · NHTSA communication 10238343 · issued Jun 29, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2020
model years
5
vehicle entries
Official summary
Special Coverage. Certain 2019 model year Buick Enclave and Chevrolet Traverse vehicles equipped with a 3.6L engine (RPO LFY), and certain 2020 model year Buick Encore and Chevrolet Sonic / Trax vehicles equipped with a 1.4L engine (RPO LUV), may have a condition that could cause the evaporative emissions purge valve to not fully close. If this condition occurs, the engine could run rough, hesitate, or stall at idle speeds. Additionally, the Malfunction Indicator Light (Check Engine Light) would illuminate, and a diagnostic trouble code would be set. Dealers are to replace the evaporative emis
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.