N if Mr 0Nr ALL D O N I I A C 1985 91 N RARTS AND ILLUSTRATION 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 important that during any vehicle maintenance procedure replacement fasteners have the same measurements as those removed whether metric or customary Mismatched or incorrect fasteners can result in vehicle damage or malfunction or possibly personal injury Fastener sizes denoted on illustrations mag not reflect metric dimensions However since the same vehicle may be built g with metric or customary fasteners care s ould be exercised in selecting replacement part equivalent to the original fasteners in dimensions strength and pitch of thread Both metric and customary fasteners required for replacement are listed in the Service Parts Operations Standard Parts Catalog V 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 1991 GENERAL MOTORS CORPORATION ALL RIGHTS RESERVED N0 PART OF THIS PUBLICATION MAY BE REPRODUCED STORED IN ANY RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS INCLUDING BUT NOT LIMITED T0 ELECTRONIC MECHANICAL PHOTOCOPYING RECORDING OR OTHERWISE WITHOUT THE PRIOR WRITTEN PERMISSION OF GENERAL MOTORS CORP THIS INCLUDES ALL TEXT ILLUSTRATIONS TABLES AND CHARTS REQUESTS FOR PERMISSION SHOULD BE SENT TO General Motors Service Parts Operations 606O West Bristol Road F11nt Mi 48554 Engineering Department 3640 FEBRUARY 1991 PONTIAC 22N PRINTED IN U S A 1991 GENERAL MOTORS SERVICE PARTSOPERATIONS PONTIAC 22N 291 1