Jeep Grand Cherokee 2019 — technical service bulletin
Bulletin 1802521REVA · NHTSA communication 10220948 · issued Mar 6, 2021
Technical service bulletin
communication type
Electrical System
component
2019
model years
1
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may notice the following condition:The oil change interval is too short. The oil change message shows up at around 12,000 km / 7,456 mi or earlier and the normal oil change interval is 12 months or 20,000 km / 12,427 mi.
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.