Service bulletins for the 2019 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.
874 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
Only bulletins with component: Transmission and driveline are shown. Show all
| 20NA138 | 2020-08-10. Service bulletin. POWER TRAIN. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management. |
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| N192280050 | 2020-06-29. Service bulletin. EQUIPMENT; POWER TRAIN. Customer Satisfaction Program - Certain vehicles, may have a condition where the rear propeller shaft is susceptible to corrosionat high mileage. Dealers are to replace the rear propeller shaft. |
| 18NA355 | 2020-04-27. Service bulletin. POWER TRAIN; ENGINE. This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition. |
| N192216311 | 2020-03-23. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:COLUMN SHIFT ASSEMBLY; POWER TRAIN:MANUAL TRANSMISSION:FLOOR SHIFT ASSEMBLY; EQUIPMENT. Service Update - Certain vehicles may have a condition where the customer may be able to shift out of park with an expired latent fault mode counter. This will only occur after the customer ignores multiple driver information center (DIC) and chime warnings. By design, the vehicle should not allow the driver to shift out of park once the latent fault mode counter expires. Dealers are to reprogram the engine control module. |
| PIP5677C | 2020-03-09. Service bulletin. POWER TRAIN. This Preliminary information communicates to the dealer technician that the 10L60, 10L80 and the 10L90 transmissions have been place on a part restriction. Dealers are to contact the Product Quality Center before replacing the transmission assembly. |
| 990420002K | 2019-11-25. Service bulletin. POWER TRAIN. This informational bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operations. |
| 16NA361 | 2019-11-25. Service bulletin. POWER TRAIN. This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed. |
| 16NA338 | 2019-11-25. Service bulletin. POWER TRAIN. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns. |
| N192278200 | 2019-11-12. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. N192278200 - Service Update. Certain vehicles may have DTC P0607 intermittently set due to an engine control module (ECM) software and calibration error. With the DTC set, the check engine light will illuminate, and the transmission will default to 3rd gear on the next key cycle. Reverse, neutral, and park remain available. The engine may rev higher as not all 10 gears will be available in forward motion. Dealers will replace the winter grill cover. |
| PIP5677A | 2019-11-12. Service bulletin. POWER TRAIN. This Preliminary information communicates to the dealer technician that the 10L60, 10L80 and the 10L90 transmissions have been place on a part restriction. Dealers are to contact the Product Quality Center before replacing the transmission assembly. |
| 080730026F | 2019-09-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides information on Some vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped. |
| PIP5575E | 2019-09-16. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This Preliminary information communicates to the dealer technician that the transmission control module P/N 24296206 restriction has ended. |
| PIP5575D | 2019-09-16. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary information communicates to the dealer technician that the transmission control module P/N 24296206 is on restriction through the PQC. |
| 19NA142 | 2019-08-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN. This technical bulletin provides information for new transmission oil to use, a procedure for exchanging the old fluid and adding the new fluid to a service transmission. |
| 18NA355 | 2019-08-19. Service bulletin. POWER TRAIN. This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition. |
| 16NA338 | 2019-07-29. Service bulletin. POWER TRAIN. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns. |
| PIP5593D | 2019-07-08. Service bulletin. POWER TRAIN. This Preliminary information communicates to the dealer technician that the 10L80 transmission has been place on a part restriction. Dealers are to contact the Product Quality Center before replacing the transmission assembly. |
| PIP5575C | 2019-07-08. Service bulletin. POWER TRAIN. This Preliminary information communicates to the dealer technician that the transmission control module P/N 24289415 is on restriction through the PQC. |
| PIP5654 | 2019-07-08. Service bulletin. POWER TRAIN. This Preliminary information communicates to the dealer technician that the valve body Part Unique Number (PUN) may contain the letter O or the number 0. |
| 080730035D | 2019-07-01. Service bulletin. POWER TRAIN. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid. |
| 18NA355 | 2019-07-01. Service bulletin. POWER TRAIN. This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition. |
| PIP5575B | 2019-06-10. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary information communicates to the dealer technician that the transmission control module P/N 24289415 is on restriction through the PQC. |
| PIP5593C | 2019-06-03. Service bulletin. POWER TRAIN. This Preliminary information communicates to the dealer technician that the 10L80 transmission has been place on a part restriction. Dealers are to contact the Product Quality Center before replacing the transmission assembly. |
| 030729004L | 2019-05-20. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; EQUIPMENT. This informational bulletin provides normal operating characteristics and diagnostic information on Manual transmissions. |
| 18NA355 | 2019-04-22. Service bulletin. POWER TRAIN. This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.