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Service bulletin 98500

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 id600582
Published by NHTSA1998-05-27
Manufacturer's number98500
Manufacturer's date1998-01-01
NHTSA componentPOWER TRAIN:CLUTCH ASSEMBLY

NHTSA's summary

SUBJECT ON CUSTOMER SATISFACTION CAMPAIGN ON C5 CLUTCH FRICTION MATERIAL. *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

Transmission and driveline, Clutch

Vehicles listed
ALLISON TRANSMISSION

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