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Service bulletin PI1378

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10126230
Published by NHTSA2017-12-22
Manufacturer's numberPI1378
Manufacturer's date2014-12-10
NHTSA componentSTRUCTURE:BODY:TRUNK LID

NHTSA's summary

This preliminary information provides a procedure to aid in locating a water leak in the rear compartment and how to repair it to correct the customers concern of a water leak in the trunk.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Body and frame

Vehicles listed
CADILLAC CTS2014, 2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
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21-NA-0432024-12-10. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
23-NA-2192024-11-05. Service bulletin. This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
PIC5924A2024-04-08. Service bulletin. Memory Seat Module.
PIC59242024-04-08. Service bulletin. Memory Seat Module.
PIC5922A2024-04-08. Service bulletin. Revised Front License Plate Bracket Installation Instructions.
PIC59222024-04-08. Service bulletin. Revised Front License Plate Bracket Installation Instructions.
PI0281K2024-02-14. Service bulletin. This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
143062024-01-16. Service bulletin. Incorrect Front Fascia Grillettes