GENERAL INFORMATION Continued To locate the listing of a Part determine the model vehicle and refer to the book under the Group Number identifying it which may be determined by using any of the following two 2 methods 1 Consult Alphabetical Index at front of book which lists parts by noun and descriptive names and refers to the exact Group Number where all parts of similar kind may be found If name of desired part is not really found in the index a correlated Part Name will suggest approximate location 2 Consult the Illustrations Noun Name Index on which Group Number Noun Name and Part Number are shown which will refer to the Page and callout within the illustrations TRUCK ILLUSTRATION SECTION FORMAT The Illustration Section of this catalog is fully illustrated and includes all part numbers A complete noun name index is found at the beginning of the illus tration section which will provide you with the group number noun name and part number and will refer you to the exact page and callout A usage index is found in front of each major group This index will give the page number of the illustration needed The column headed NO USED indicates the number of pieces required The term A R means AS REQUIRED IF BODY IS NOT OF GENERAL MOTORS MANUFACTURE PLACE ORDERS DIRECT WITH THE MANUFACTURER WHOSE NAME APPEARS ON THE BODY NAME LABEL 1992 GENERALMOTORSSERWCEPARTSOPERAUONS lTTRUCK 63S 4 1 92