RAM 1500 2021–2022 — technical service bulletin
Bulletin 9004539 · NHTSA communication 10214529 · issued May 18, 2022
Technical service bulletin
communication type
Equipment
component
2021–2022
model years
2
vehicle entries
Official summary
HOUSING, Air Inlet For concern of whistle noise from right side of vehicle at 45+mph, please contact one of the following: FCA Redacted Content If no response in 15 minutes, proceed with repair. Please investigate HVAC to firewall connection between the fresh/recirculation housing and the firewall. Identify any obstructions that could be causing a gap. Loosen HVAC housing and retorque and/or install additional packing 68396044A$ at the air inlet housing to the firewall to eliminate any potential gap. Please email pictures of the issue with results to FCA Redacted Content.
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.