Jeep Grand Cherokee 2021 — technical service bulletin
Bulletin 76429 · NHTSA communication 10221654 · issued Jul 28, 2021
Technical service bulletin
communication type
Power Train
component
2021
model years
1
vehicle entries
Official summary
Warranty Bulletin D-21-09 Part Order Restriction Program - Certain Atlantis-High Components - Central ADAS Decision Module (CADM Lo), Radio Frequency Hub (RFHM), Security Gateway Module (SGW), Telematics Box Module (TBM2H) and Transmission Control Module (TCM) (Sales Code DFT - 850RE) - 2021 Jeep Grand Cherokee (WL)
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.