TSB Document:

• MC-10113908-9999.pdf

Affected Component: EQUIPMENT ADAPTIVE/MOBILITY

Summary

This Preliminary Information communication provides information to the technician that vehicles with engine Regular Production Option Codes LY7, LLT, LAU, LF1, or LFW that there is a new cylinder head design. When replacing cylinder heads on High Feature V6 engines if you are using a 2011 new style "saddle cap" cylinder head, spacer shims are not to be used. The saddle cap design cylinder heads will not work with the 2004-2006 and first design 2007 engines.

This Preliminary Information communication provides information to the technician that vehicles with engine Regular Production Option Codes LY7, LLT, LAU, LF1, or LFW that there is a new cylinder head design. When replacing cylinder heads on High Feature V6 engines if you are using a 2011 new style "saddle cap" cylinder head, spacer shims are not to be used. The saddle cap design cylinder heads will not work with the 2004-2006 and first design 2007 engines.