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Service bulletin 4519

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 id10022433
Published by NHTSA2007-08-14
Manufacturer's number4519
Replaces4519A
NHTSA componentSTEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS

NHTSA's summary

FLUID LEAK FROM STEERING GEAR LINE CONNECTION. *KB

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Steering, Power steering

Vehicles listed
BUICK LUCERNE2007, 2008
CADILLAC DTS2007, 2008

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
12-02-32-002A2018-04-23. Service bulletin. This technical bulletin provides a revision for 12-02-32-002 to add the 2013-2014 model years, add noise as a possible condition and add a Note in the Instructions section.
SB-06-02-35-009G2010-02-17. Service bulletin. BUICK: POWER STEERING CLUNK/BUMP WHILE MAKING TURNS AT SLOW SPEEDS, COLUMN, INTERMEDIATE SHAFT, INTERMITTENT (REPLACE INTERMEDIATE SHAFT). *PE UPDATED ON 5/1/2012. *KB