GM 269M-2012 发动机舱声降噪结构.pdf

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GM 269M-2012 发动机舱声降噪结构.pdf

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ENGINEERING SUPERCEDED Material Specification STANDARDS GM269M Engine Compartment Sound Absorber Construction Do Not Use on New Programs; Replaced by GMW16653 © Copyright 20 12 General Motors Company All Rights Reserved August 2012 Originating Department: North American Engineering Standards Page 1 of 4 GM ENGINEERING STANDARDS GM269M © Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 2 of 4 GM ENGINEERING STANDARDS GM269M © Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 3 of 4 GM ENGINEERING STANDARDS GM269M 8 Release and Revisions This standard was originated in October 1994. It was first published in September 1997. Publication Issue Description (Organization) Date 1 SEP 1997 Initial publication. 2 FEB 2003 Editorial Revisions (GMNA) 3 OCT 2004 Added Type F, removed crock test. (GMNA) 4 AUG 2012 Superceded by GMW16653. (Thermal Materials Specialist) © Copyright 2012 General Motors Company All Rights Reserved August 2012