RAM 1500 2025–2026 — technical service bulletin
Bulletin 23-043-25 · NHTSA communication 11026550 · issued Dec 6, 2025
Technical service bulletin
communication type
Structure
component
2025–2026
model years
2
vehicle entries
Official summary
Water Leak At Center High Mounted Stop Lamp (CHMSL) Customers may experience one or more of the following: ● Water on the headliner. ● Water at the back of the cab. ● A leak from the third brake/cargo light/CHMSL
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.