Chevrolet Tahoe 2020 — technical service bulletin
Bulletin N222359320 · NHTSA communication 10208794 · issued Mar 7, 2022
Technical service bulletin
communication type
Electrical System
component
2020
model years
1
vehicle entries
Official summary
Service Update. On certain vehicles equipped with Police Package (RPO 9C1) and Content Theft Deterrent Disabled (RPO UTQ), the auxiliary battery may become discharged during extended operations, and using the installed special equipment. When the auxiliary battery state of charge diminishes below a defined voltage level, the installed special equipment will shut down. Dealers are to reprogram the body control module.
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.