Jeep Grand Cherokee 2025 — technical service bulletin
Bulletin 08-011-26 REV.A · NHTSA communication 11030230 · issued Mar 17, 2026
Technical service bulletin
communication type
Electrical System
component
2025
model years
3
vehicle entries
Official summary
Flash: Global Telematics Box Module (TBM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **B1562-14 - GPS Antenna-Circuit Short To Ground Or Open. ● B1561-11 - Cellular Antenna 2-Circuit Short To Ground. ● B1560-11 - Cellular Antenna 1-Circuit Short To Ground.** ● B22A9-96 - ECU Internal Performance-Component Internal Failure. ● B1560-13 - Cellular Antenna 1-Circuit Open. ● B1561-13 - Cellular Antenna 2-Circuit Open. The customer may experience the follow
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.