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Service bulletin 99111

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 id607353
Published by NHTSA1999-09-21
Manufacturer's number99111
Manufacturer's date1999-05-14
NHTSA componentSTRUCTURE

NHTSA's summary

ACTION RETURN BULLETIN REGARDING SPECIAL RETURN OF THE STEP PACKAGE, SIDE ASSIST. *TT

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

Body and frame

Vehicles listed
GMC GMC

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