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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.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
PIP4112R2018-05-21. Service bulletin. EQUIPMENT; POWER TRAIN; ENGINE. This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to first gear.
PIC62642018-05-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. The Preliminary Information communication advises the technician that the Technical Assistance Center has aParts Restriction for Drive Motor Battery Charger (OBCM) and the charge receptacle 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.
PIE04002018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Oil Leak Between Upper and Lower Oil Pan.
PIE0385B2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This engineering information bulletin ends the need for information from the field on vehicles that have the concern of a noisy water pump.
17-NA-0392018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides additional information on what oil to use in the 2.0L engines to eliminate the risk of engine/piston failure.
15-06-123-001C2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin advises the possible concerns that can happen when using a stop leak additive in the cooling system.
PIE0385A2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information bulletin is requesting information from the field on vehicles that have the concern of a noisy water pump.
PIP5163C2018-05-21. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.
PIP5493C2018-05-21. Service bulletin. ENGINE; EQUIPMENT:MECHANICAL. This Preliminary information communicates diagnostic tips for misfires on active fuel management cylinders and engineering investigations into cylinder 6 misfire on XT5 and cylinder 4 misfire on LaCrosse both of which are 2017.
PIE0400A2018-05-21. Service bulletin. ENGINE. This engineering informational bulletin is ending the need for information from the field on vehicles that have the condition of Oil Leak Between Upper and Lower Oil Pan.
17-NA-1572018-05-21. Service bulletin. EQUIPMENT; ENGINE. This informational bulletin explains the difference in oil filters and the possibilities of what may happen using the incorrect filter.
00-06-01-012G2018-05-21. Service bulletin. ENGINE. This informational bulletin advises the possible issues that may occur using a scotch brite pad or highly abrasive disk on engine surfaces.
18NA1252018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides information for engine oil life monitor operation calculation.
18NA1042018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides information on Hoot, Whine, Buzz, Hiss Noise Coming from Vehicle After Engine is Shut Off and that its a normal condition and no parts should be replaced.
PIC6272B2018-05-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. The Preliminary Information communication advises the technician that the Technical Assistance Center has a Parts Restriction for Drive Motor Battery and the internal parts 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.
060089031E2018-05-21. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
090604026N2018-05-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2 9U.S. and Canada
090604015C2018-05-21. Service bulletin. ENGINE. This informational bulletin provides a revision for 09-06-04-015B (Vehicles Sitting Outside on Dealer Lots for Extended Periods with Hard Start/No Start Condition) to add the 2015-2018 model years.
18NA0732018-05-21. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Bulletin provides graphics, information and guidelines for engine component wear that require repair and not engine replacement.
16NA3382018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. This Bulletin provides guidelines 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.
PIP5486C2018-05-21. Service bulletin. ENGINE. This Preliminary information communicates possible concerns and a diagnostic strategy to locate and repair various noises within the engine as well as some misfire causes.
PIP4112S2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This concern may also be present while crusing at highway speeds and then an aggressive increase in throttle.This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to downshift.
PIP5493F2018-05-21. Service bulletin. ENGINE. This Preliminary information communicates diagnostic tips for misfires on active fuel management cylinders and engineering investigations into cylinder 6 misfire on XT5 and cylinder 4 misfire on LaCrosse both of which are 2017. Changes to Preliminary informationinclude adding MY2018, advising of calibration for previous investigation and adding pictures to identify concern. Also difining calibration update information.
PIE03852018-05-07. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information bulletin is requesting information from the field on vehicles that have the concern of a noisy water pump.
150089005A2018-04-23. Service bulletin. EQUIPMENT; ENGINE. This warranty administration bulletin provides dealership personnel with policy and procedure requirements for essential tools that include consumable parts (U.S. Only).

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