Jeep Wrangler 2021–2022 — technical service bulletin
Bulletin NotificationZD8 · NHTSA communication 10247977 · issued Feb 16, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2022
model years
2
vehicle entries
Official summary
Customer Satisfaction Notification ZD8 Coolant 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.