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Service bulletin 980301980502

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 id600942
Published by NHTSA1998-06-16
Manufacturer's number980301980502
Manufacturer's date1998-03-01
NHTSA componentPOWER TRAIN:CLUTCH ASSEMBLY

NHTSA's summary

COMMENTS OF LOSS OF 4TH GEAR, SLIPPING IN 4TH GEAR, BUSY 3-4 SHIFTING OR TORQUE CONVERTER CLUTCH (TCC) CYCLING. *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
AM GENERAL HUMMER1996 to 1997

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