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Service bulletin 988A

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 id602969
Published by NHTSA1999-01-22
Manufacturer's number988A
Manufacturer's date1999-01-22
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

CONDITIONS WITH BYPASS OIL FILTER (SPINNER) NEEDS SEPARATE FROM ALTERNATOR OIL SUPPLY AND RETURN IN ORDER TO IMPROVE THE ALTERNATOR OIL CIRCULATION. *YC

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

Engine

Vehicles listed
NEW FLYER NEW FLYER

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