GM CHEVROLET INTRODUCTION 1 Complete familiarity with the information contained on the following pages will prove helpful in locating the desired parts Special attention should also be made to the preceding CONTENTS PAGE as well as to the following ILLUSTRATIONS As an added convenience all illustrations and charts are now located in the front part of the catalogue immediately preceding the data groups The illustrations are AND in regular GM grouping sequence as outlined on the contents page and are so arranged as to facilitate use of index dividers if desired CHARTS In most cases illustrations cover typical assemblies only and are intended to show the general function of the parts When the exact part required is not shown the illustrations may be used as a guide to locate the part by referring to parts of similar function PARTS DATA The Standard GM Grouping System is followed throughout and for convenience in locating the various Group Sections are listed on the Contents Page at the front of the book ALL GROUP NUMBERS ARE SHOWN IN NUMERICAL SE QUENCE WHERE TWO OR MORE HEADINGS APPEAR APPLICABLE TO ONE GROUP THEY ARE LISTED IN ALPHABETICAL SEQUENCE BY NOUN NAME The part number shown in brackets following the year and model application is the superseded number which can in most instances be used while stock is available e g Supersedes 1234567 However caution should be exercised since it does not necessarily hold true that the old part is fully interchangeable and can be used in place of the new part IT MUST ALSO BE NOTED THAT THROUGHOUT THE DATA SECTION WHENEVER TWO 2 PART NUMBERS ARE PRINTED ON ONE LINE OF APPLICATION AS PER THE FOLLOWING EXAMPLE 1234567 1234568 1964 All with trim 802 902 etc THE FIRST NUMBER WILL ALWAY S BE THE PART NUMBER OF THE RIGHT HAND PART FOLLOWED BY THE LEFT All part numbers that appear for the first time are indicated by the use of special symbol as indicated on the lower left hand side of each data page ACCESSORIES The accessory packages for the most part are listed immediately following the application data of the last main group section The description of the package is shown with reference to the group number in which the part number of the package and applicable service parts can be located For past model accessories refer to your current accessory catalogue INDEXES The Alphabetical Index lists in alphabetic sequence the noun name of the part cross referenced to the applicable group number The Numerical Index lists in sequence the part numbers cross referenced to the group in which they appear