REAR AXLE FIELD IIDIENTIFICATION Axles are manufactured by Buick Chevrolet Buffalo Chevrolet Warren Chevrolet Gear and Axle Olds mobile Pontiac and McKinnon Divisional Manufacturer code letters will be metal stamped on the axle tube adjacent to the carrier for field identification See Example Metal stamped on right front inboard side letters and numerals I 4 high 3 outboard of carrier or are located on a metal tag attached to cover bolt Reference should be made to divisional service manuals for location on some models FIELD IDENTIIEQATION MINIMUM REOUIREIVIENT FOR IDENTOPLATE z N K Bl 218 D WV W BORG I ARNER I LIMITED SLIP IDENT E EATON i 80 OPT O s O g I D FOR DAY SHIFT N FOR NIGHT SHIFT RATIO CODE DAY OF YEAR AXLE BUILT MANUFACTURER IDENTITY Note 1978 models the fourth character indicates model year fifth through seventh Julian date The eigth character shift code MANUFACTURER IIDIENTITY B BUICK O OLDSMOBILE P PONTIAC M PONTIAC CANADA G CHEVROLET GEAIR AND AXLE C CHEVROLET BUFFALO K GM OF CANADA ST CATHARINES MCKINNON W CHEVROLET WARREN MANUFACTURERS IDENTIFICATION WILL APPEAR IN TI IIE DESCRIPTION COLUMN OF CATALOG EXAMPLE 76 A C W GSO 488333 2 PLATE DIFF PRELOAD P M TYPE I GI I PARTS DIVISION GENERAL MOTORS CIORPORATlON CADIL I AC 61 1 5 3 A