1985 1991 G LIGHT TRUCK VAN PARTS AND ILLUSTRATION CATALOG EFFECTIVE JANUARY 1991 A11 illustrations and specifications contained in this literature are based on the latest product information available at the time of publication approval General Motors Corporation reserves the right to make changes at any time without notice in colors materials equipment specifications and models and also to discontinue models IMPORTANT Light Truck 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 may not reflect metric dimensions However since the same vehicle may be built with metric or customary fasteners care should 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 89 A special Service Parts Operations Division label saying Metrlc 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 NO 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 TO 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 6060 West Bristol Road Flint MI 48554 Engineering Department 364D GENERAL MOTORS SERVICE PARTS OPERATIONS TRUCK PARTS PUBLICATIONS DEPARTMENT WATERFORD MI 48329 LIGHT TRUCK 52G 1 19 91 GENERAL MOTORS SERVICE PARTS 0PEERATlOlNS LT TRUCK 52G 1 91 1