Jeep Grand Cherokee 2018 — technical service bulletin
Bulletin W42 · NHTSA communication 10221749 · issued Jul 29, 2020
Technical service bulletin
communication type
Power Train
component
2018
model years
1
vehicle entries
Official summary
Customer Satisfaction Notification W42 Reprogram Powertrain Control Module
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.