WenmarOpen by Wenmar Pro

Service bulletin 010604009

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 id619181
Published by NHTSA2001-05-17
Manufacturer's number010604009
Manufacturer's date2001-02-01
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

ON CERTAIN MODELS INCLUDING MY2000 - 2001 CHEVROLET AND GMC WT5500 SERIES, THE SERVICE ENGINE SOON (SES) INDICATOR IS ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE 0226 SET. *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.

Vehicles listed
CHEVROLET T SERIES1998, 1999, 2000, 2001
GMC T SERIES1998, 1999, 2000, 2001

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