Il FMBUICK ALL S R iw l J w EBU I I K n III 1985 S11 N PARTS AND ILLUSTR1A TI DN CATALOG Passenger vehicles for 1985 91 contain many parts dimensioned in the metric system These parts are very close in dimension to familiar customary measurements in the inch system It is zimportant that during any vehicle maintenance procedure replacement fasteners have the same measurements as those rem nved whe1 her metric or customary Mismatched or incorrect fasteners can result in vehicle damage or malfunction or p0ssib ly personal injury Fastener sizes denoted on illustrations may not reflect metric dimensions However since the same vehicle may be built with metric or customary fasteners care s Tould be exercised in selecting replacement part equivalent to the original fasteners in dimensions strength and pitch of thread Both metric and u stomary fasteners required for replacement are listed in the Service Parts Operations Standard Parts Catalog A special Service Parts Operations label saying Metric Fasteners Required in red letters will be used to identify service parts which require metric fasteners but replace parts which originally used inch fasteners This label will enable dealers and over the counter customers to quickly recognize parts which have changed to metric fasteners 1 1991 GENERAL MOTORS CORPORATION ALL RIGHTS RESERVED NO PART OF THIS PUBLICATION MAY BE REPRODUCED STORED IN ANY RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BV ANY MEANS INCLUDING BBT NOT LIMITED TO ELECTRONIC MECHANICAL PHOTOCOPYING RECORDING OR OTHERWISE WITHOUT THE PRIOR WRITTEN PERMISSION OF GENERAL MOTORS CORP TRIS INCLUDES ALL TEXT ILLUSTRATIONS TABLES AND CHARTS REQUESTS FOR PERMISSION SHOULD BE SENT TO General Motors Service Parts Operations 6060 West Bristol Road Flint Mi 48554 Engineering Department 3640 FEBRUARY 11991 BUICK 44N PRINTED IN U 5 A 11391 GENERAL MOTORS SERVICE PARTS TOIPIERATIONS BUICK 44N 2 91 1