SERVICE PARTS IDENTIFICATION LABEL Continued I V I N I The complete vehicle serial number includes the year of manufacture model number third digit omitted plant designation and an assembly sequence number This number should correspond with the identification label attached to the left hand door lock pillar C WHEELBASE The wheelbase on all light duty trucks is the distance between the center lines I of the front and rear axles SPECIAL EQUIPMENT SE A The Special Equipment Number is a four digit number for reference purposes only It is of primary importance that this number be furnished when submitting part number inquiries MODEL SERIES IDENTIFICATION Chevrolet and GMC Trucks are identified by a model designation system consisting of 7 characters 2 letters followed by 5 numbers Refer to Truck Series A Identification Chart INTERIOR TRIM COMBINATIONS The interior trim combination code is shown for reference purpose only It should be used to determine the correct part number for trim items from the parts book it should also be furnished when submitting part number inquiries EXTERIOR PAINT The exterior paint number is used as reference when ordering paint Refer to Truck Exterior Paint Color Chart OPTION NO AND DESCRIPTION The first alphabetic letter and the following two numeric digits indicates the Regular Production Option Number This option code used in conjunction with the Regular Production Option list found in this publication will enable you to de ermine the type of equipment installed on the vehicle Name of equipment in the Option Number column will indicate standard equipment for that model SEO All applicable seo s will be shown on the Service Parts Identification label in the same area as options This number must be furnished when submitting part number inquiries f 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52R REV 1 88 9