Cadillac XT4 2024 — technical service bulletin
Bulletin 24-NA-136 · NHTSA communication 11005421 · issued Jul 17, 2024
Technical service bulletin
communication type
Electrical System
component
2024
model years
1
vehicle entries
Official summary
This service bulletin provides repair information on new Radio Software Version is W38E-174.4.1-M170-SQBR5-180.5 to correct a customer concern of radio software issues.
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.