RAM 1500 2019–2021 — technical service bulletin
Bulletin 9004018 · NHTSA communication 10221785 · issued Aug 19, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2021
model years
3
vehicle entries
Official summary
LAMP, Cargo (CHMSL) If the CHMSL is being replaced for a water leak, new screws should be used, refer to STAR parts for the latest screw PN Ensure the screws are tightened to 2.8 NM / 24" lbs.
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.