Service bulletins for the 2018 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.
1096 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Torque converter are shown. Show all
| PIE0405C | 2018-06-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of a Torque Converter Shudder. |
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| PIE0405B | 2018-04-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of a Torque Converter Shudder. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.