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Service bulletin 050090007

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 id10017467
Published by NHTSA2005-11-09
Manufacturer's number050090007
Manufacturer's date2006-11-01
Replaces05009007A
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

USE OF DIELECTRIC LUBRICANT TO PREVENT WATER/MOISTURE INTRUSION INTO WIRING CONNECTORS. *TT UPDATED 03-19-07. 2007 AND PRIOR CHEVROLET W-SERIES MEDIUM DUTY TILT CAB MODELS. 2007 AND PRIOR GMC W-SERIES DUTY TILT CAB MODELS. 2007 AND PRIOR ISUZU N-SERIES COMMERCIAL MODELS. *KB

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

Electrical system

Vehicles listed
CHEVROLET W35002006
CHEVROLET W45002006
CHEVROLET W55002006
GMC W35002006
GMC W45002006
GMC W55002006
ISUZU NPR2006
ISUZU NQR2006

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