Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster...

Bulletin number

SA-029-20d

Component

Electrical system: instrument cluster/panel

Summary

Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored: B119F:01 TCU - Tel antenna No. 1 malfunction  B119F:13 (TCU - TEL antenna No.1 circuit malfunction)  B119F:2B (CMU - GPS antenna signal circuit malfunction)  B1252:87 TCU - Communication error with connectivity master unit (CMU)  U0156:00 VCM - communication error with connectivity master unit (CMU)  U0156:00 BCM - Communication error with connectivity master unit (CMU)  U0198:00 BCM - Communication error with emergency call unit  U212D:00 BCM - Communication error with light control module (RH)  U3000:00 TCU - Telematics communication unit internal malfunction  Low Voltage Battery DTCs

Owners of these vehicles have filed 19 complaints in the electrical category.