EXAMPLE:
LINE 1: Year, GM Division, Model and Body, Assembly Plant, Sequence Number

Year	GM Division	Model Series	Body Code	Assembly Plant	Sequence #
74 = 1974	1 = Chevrolet	XX = Nova XY = Nova Custom	17 = 2 door hatchback 27 = 2 door sedan 69 = 4 door sedan	K = Kansas City, MO L = Van Nuys, CA W = Willow Run, MI	Starts at 100001

LINE 2: Trim and Paint

Interior Trim	Seat Type	Exterior Paint (Lower/Upper)
750 = Black & White check cloth bench 751 = Black cloth bench 752 = Black sport cloth bench or buckets 754 = Black perforated vinyl bench or buckets 755 = Meduim Green & Black sport cloth bench 756 = Medium Green & Black check cloth bench 757 = Medium Green cloth bench 759 = Medium Green perforated vinyl buckets 764 = Light Neutral & Black check cloth bench 766 = Light Neutral perforated vinyl bench or buckets 771 = Midnight Blue cloth bench 774 = White buckets - Spirit of America 825 = Black perforated vinyl bench or buckets 826 = Midnight Blue perforated vinyl bench 827 = Medium Saddle perforated vinyl bench or buckets 828 = Medium Green perforated vinyl bench or buckets 829 = Light Neutral perforated vinyl bench or buckets Accent Colors 19F = Black accent 24F = Blue accent 75F = Red accent Example: 751 24F = Black cloth bench w/Blue accent Big Four Module (consists of the instrument panel, carpet, cowl kick panel, and package shelf) 19X = Black Big Four 29X = Midnight Blue Big Four 44X = Dark Green Big Four 60X = Midnight Neutral Big Four 65X = Dark Saddle Big Four Example: 757 19X = Medium Green cloth bench w/Black Big Four	A51 = Bucket Seats A52 = Bench Seat	11 = Antique White 26 = Bright Blue Metallic 29 = Midnight Blue Metallic 36 = Bright Aqua Metallic 40 = Lime Yellow 46 = Bright Green Metallic 49 = Dark Green Metallic 50 = Cream Beige 51 = Bright Yellow 53 = Light Gold Metallic 55 = Sandstone 59 = Golden Brown Metallic 64 = Silver Metallic 66 = Bronze Metallic Metallic 74 = Dark Red Metallic 75 = Medium Red A = White Vinyl Roof B = Black Vinyl Roof D = Blue Vinyl Roof E = Bream Beige Vinyl Roof F = Brown Vinyl Roof G = Green Vinyl Roof H = Maroon Vinyl Roof L = Russet Vinyl Roof R = Saddle Vinyl Roof W = Silver Vinyl Roof

LINE 3: Build month and week

Month	Week
01 = January 02 = February 03 = March 04 = April 05 = May 06 = June 07 = July 08 = August 09 = September 10 = October 11 = November 12 = December	A = First Week B = Second Week C = Third Week D = Fourth Week E = Fifth Week