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Service bulletin 010604056

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 id631829
Published by NHTSA2002-06-20
Manufacturer's number010604056
Manufacturer's date2001-12-01
NHTSA componentELECTRICAL SYSTEM:IGNITION

NHTSA's summary

INFORMATION ON REVISED IGNITION SYSTEM SPECIFICATIONS. *SLC

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, Ignition

Vehicles listed
CHEVROLET G VAN2001
GMC G VAN2001

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