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Service bulletin 100901

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 id626155
Published by NHTSA2001-12-13
Manufacturer's number100901
Manufacturer's date2001-09-10
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)

NHTSA's summary

SUBJECT REGARDING REIMBURSEMENT FOR REPAIRS TO THE LINEAR EXHAUST GAS RECIRCULATION SYSTEM. *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

Engine, Exhaust and emissions, EGR valve

Vehicles listed
GMC GM

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