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Service bulletin 645 001

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 id52427
Published by NHTSA1997-07-24
Manufacturer's number645 001
Manufacturer's date1997-02-01
NHTSA componentSTEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS

NHTSA's summary

POWER STEERING HOSE FITTING LEAKING. *TW

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
WHITE GMC VNL
WHITE GMC VNM

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