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Service bulletin 4294

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 id10023757
Published by NHTSA2008-01-31
Manufacturer's number4294
Manufacturer's date2007-12-01
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

NHTSA's summary

CRANKCASE CONTAMINATION DUE TO COOLANT IN THE ENGINE OIL - RESEAL CASTING PLUG. WITH BUILT BEFORE VIN BREAKPOINT 8B067818 (JULY 24, 2007) & 1.6L ENGINE (VIN 6 - RPO L91 OR LXT). *NJ

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, Crankcase ventilation (PCV)

Vehicles listed
CHEVROLET AVEO2004, 2005, 2006, 2007, 2008

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

Other bulletins for the same vehicles and component
PIP-4406A2011-05-25. Service bulletin. GM: THERE ARE TROUBLE INTERNAL TROUBLE CODES THAT SET IN COLD TEMPERATURES. THERE IS A PROCESS TO REPAIR THEM. *RM