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Service bulletin 3218

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 id10011658
Published by NHTSA2005-01-28
Manufacturer's number3218
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

CYLINDER HEAD CRACKS BETWEEN THE VALVE SEATS. THIS ALSO INCLUDES 92-01 C1 C2 C3 K1 K2 K3 G2 G3 P3 CHEVROLET 6.5 L56 L57 L65 GMC 6.5 L56 L57 L65 MODELS. *EH

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

Vehicles listed
UNKNOWN UNKNOWN

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