Chevrolet Express 2017–2021 — technical service bulletin
Bulletin N232428780 · NHTSA communication 10249700 · issued Feb 5, 2024
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2021
model years
6
vehicle entries
Official summary
Customer Satisfaction Program - Certain vehicles may have a condition in which the transmission Control Valve Body Ball Check Valves can wear prematurely resulting in the possibility for them to become stuck or pass through the Control Valve Body Spacer Plate. The customer may not be able to shift into drive from park or reverse at the start of vehicle operation. Dealers are to replace the transmission Control Valve Body Spacer Plate package.
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.