RAM 3500 2025–2026 — warranty extension
Bulletin 37D Combo · NHTSA communication 11034384 · issued Jun 26, 2026
Warranty extension
communication type
Electrical System
component
2025–2026
model years
6
vehicle entries
Official summary
Emissions Recall 37D - NOx Sensor - Dealer Notification
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.