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Service bulletin 990850005

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 id606577
Published by NHTSA1999-08-27
Manufacturer's number990850005
Manufacturer's date1999-04-01
NHTSA componentSEATS

NHTSA's summary

EXPERIENCING RATTLE NOISE AT REAR SEAT UPPER ATTACHMENT WHERE THE SEAT CONNECTS WITH THE REAR CAB WALL. *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

Seats

Vehicles listed
CHEVROLET C SERIES1999
CHEVROLET K SERIES1999
CHEVROLET SIERRA1999
CHEVROLET SILVERADO1999
GMC C SERIES1999
GMC K SERIES1999
GMC SIERRA1999
GMC SILVERADO1999

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

Recalls for the same vehicles and component
20001942000-09-15. Seats And Restraints

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
0508500122005-11-30. Service bulletin. UNWANTED/LOOSE SEAT MOVEMENT. *TT
5102005-09-02. Service bulletin. REPAIRING NAPPED FABRIC-SEATS MAY HAVE BEEN UPHOLSTERED IN NAPPED FABRICS WITH DORCHESTER ON THE BOLSTER AND HONEYCOMB ON THE INSERT. *SC
30252004-08-23. Service bulletin. REPAIRING CLOTH SEATS WITH NAPPED FABRIC. *MJ
9908500041999-08-27. Service bulletin. SUBJECT REGARDING SEAT NOISE / VIBRATION - CREAK IN FRONT SEAT CUSHION, RATTLE / VIBRATION IN 40% FRONT SEAT, JINGLE IN 20% FOLDING CENTER SEAT. *TT