Chevrolet Silverado 2500 2024–2025 — technical service bulletin
Bulletin 25-NA-150 · NHTSA communication 11026101 · issued Jun 5, 2025
Technical service bulletin
communication type
Engine
component
2024–2025
model years
8
vehicle entries
Official summary
This bulletin provides a procedure to check and replace the oil cooler seals before just replacing the oil cooler, for an oil leak.
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.