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Service bulletin 9940A

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 id611354
Published by NHTSA2000-06-02
Manufacturer's number9940A
Manufacturer's date1999-12-15
Replaces9940
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)

NHTSA's summary

THIS TRP IS TO ADDRESS A DESIGN ISSUE OF THE UPPER GEAR COVER ON AUTOMOTIVE SIGNATURE AND ISX ENGINES THAT HAVE BEEN EXPERIENCING GEAR COVER CRACKS. A NEW GEAR COVER HAS BEEN RELEASED WHICH WILL PREAVENT FUTURE FAILURES.

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, Automatic transmission

Vehicles listed
CUMMINS CUMMINS

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