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RecallGazette

Vehicle problems, recalls & safety intelligence

Buick Enclave 2007–2011technical service bulletin

Bulletin PIP4936C · NHTSA communication 10113908 · issued Mar 3, 2016

Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2007–2011
model years
58
vehicle entries

Official 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.

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.