U e FMCHEV ALL rr 5 3 A 1991 r93 B PARTS AND ILLUSTRATION CATALOG Passenger vehicles for 1991 93 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 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 l A special Service Parts Operations label saying Metric Fasteners Requiredf in red letters will be used to identify service parts which require metric fasteners bu 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 isoz GENERAL morons ooapoanrxow ALL nxonrs RESERVED wo Paar os rnrs puatrcnriow wav BE nEpnooucEo sronE rw Awv RETRIEVAL svsrem on O A rnnwsurrreo in Any roam oa av Any MEANS iwotuoruo our wor LIMITED ro ELECTRONIC wEoaAw1cAt paorocopviwc RECORDING on OTHERWISE wrruour THE onion wnrrrew PERMISSION ommmmmww mwmmwnmnmwmmsmmmmmm REQUESTS FOR PERMISSION SHOULD BE SENT T0 General Motors Service Parts Operations 6060 West Bristol Road E11nt M1 48554 Engineering Department 3640 AUGUST 1992 CHEVROLET 17B PRINTED IN U vS A resz GENERAL rworoas SERVICE mrs o EnArrows cuzvnoier 1ra 1 7 8 2 1