WenmarOpen by Wenmar Pro

Service bulletin PI0421C

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 id10137474
Published by NHTSA2018-05-21
Manufacturer's numberPI0421C
Manufacturer's date2012-11-28
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This preliminary information bulletin provides a procedure to remove and replace the clutch actuator cylinder elbow seal for concerns regarding a fluid leak after clutch actuator replacement.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
CHEVROLET C SERIES2004
CHEVROLET C SERIES2006 to 2007

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