WenmarOpen by Wenmar Pro

Service bulletins for the 2017 Cadillac CT6

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1316 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Transmission control module are shown. Show all

Bulletins, newest first
PIP5621C2022-10-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.
PIC62702018-05-21. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). The Preliminary Information communication advises the technician that the Technical Assistance Center has a Parts Restriction for Hybrid Powertrain Control Module 2 for the new vehicle launch of the 2017 Cadillac CT6 Plug In Hybrid. The dealer technician is advised to call the GM Technical Assistance Center for further assistance.
16-NA-4042017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This technical bulletin provides a procedure to reprogram the TCM to correct the DTC set.
16-NA-4042017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This technical bulletin provides a procedure to reprogram the TCM to correct the DTC set.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.