GENERAL INFORMATION I Complete familiarity with the information contained on these pages as well as the general layout of the Parts Book will prove helpful in locating and ordering the desired parts The Book is arranged in sections as follows I Model Series Identification I Alphabetical Index I Chassis Parts Listing groups 0 000 to 9 000 inclusive Commercial Body Parts Listing groups 16 000 to 17 999 inclusive Numerical Index The Group System of listing parts is used and briefly is as follows V Main units of the vehicle are identified by the Numeral preceding the Decimal i e Engine 0 I Cooling and Oiling 1 Electrical 2 Fuel System 3 Some Parts may be listed elswhere than in its original or prime Group and in such listings the prime Group is indicated in parentheses This procedure is necessary as a part can have but one identify ing Group Number for ordering or bin location For example under Group Number 3 751 Part Number 7020926 is listed as Carburetor Choke Valve Screw and the prime Group 3 820 is shown in the descrip tion column For convenience all parts added to a reprint will be indicated with a bullet following the model year This bullet will appear for one reprint only I Brake application charts appear in front of group 4 589 These charts must be used to determine the correct brake system and replacement parts READING TRUCK MODEL APPLICATION The Truck Models included in this publication are listed as follows Conventional Cab S Truck 4 Wheel Drive T Truck I For further clarcation see the Truck Series Identification Charts which follow the General Information Section of the catalog I I 1982 83 TRUCK CATALOG FORMAT The 1982 83 truck catalog format is written in a similar way to that of the passenger car catalog using model codes in place of body styles RPO regular production options will also in most cases be called out in code w description where needed Refer to the RPO list for proper identification of RPO s WHEELBASE When the wheelbase dimension is essential to differentiate between models a 3 digit model number will be used l Example f I ST106 03 S Truck with a 2751 mm wheelbase ST108 03 S Truck with a 2995 mm wheelbase ST106 53 S Truck w 244 mm extended cab 2995 mm wheelbase ST105 16 S Truck 2 door Blazer Jimmy 2553 mm wheelbase WAREHOUSlNG AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORAT ON LT TRUCK 52S REV 9 82 s