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Service bulletins for the 2015 Cadillac CTS

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.

1797 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Transfer case are shown. Show all

Bulletins, newest first
060089026N2018-06-04. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE:BODY:DOOR; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); VISIBILITY:WINDSHIELD; ELECTRONIC STABILITY CONTROL (ESC). This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.
15584A2017-01-26. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 15584A - SERVICE UPDATE (THE SERVICE PROCEDURE AND WARRANTY TRANSACTION SECTION HAVE BEEN REVISED). THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSPECT AND, IF NECESSARY, REPLACE THE TRANSFER CASE OIL DISTRIBUTION TUBE ON CERTAIN VEHICLES. ON SOME VEHICLES, THE TUBE MAY NOT BE FULLY SEATED AND A LEAK COULD DEVELOP.
155842017-01-26. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); EQUIPMENT. 15584 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSPECT AND, IF NECESSARY, REPLACE THE TRANSFER CASE OIL DISTRIBUTION TUBE ON CERTAIN VEHICLES. ON SOME VEHICLES, THE TUBE MAY NOT BE FULLY SEATED AND A LEAK COULD DEVELOP.

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