GM12 REAR AXLE FIELD IDENTIFICATION Axles are manufactured by Buick Chevrolet Buffalo Chevrolet Warren Chevrolet Gear and Axle O ds 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 ll4 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 IDENTIFICATION TMINIMUM REQUIREMENT FOR IDENTO PLATE Q N K B 218 D W W BORG WARNER LIMITED SLIP IDENT E EATON G8O OPT O OLDS D FOR DAY SHIFT N FOR NIGHT SHIFT 4 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 IDENTITY B BUICK O OLDSMOBILE P PONTIAC M PONTIACICANADA G CHEVROLET GEAR AND AXLE C CHEVROLET BUFFALO K GM OF CANADA ST CATHARINES IVICKINNON W CHEVROLET WARREN MANUFACTURERS IDENTIFICATION WILL APPEAR IN THE DESCRIPTION COLUMN OF CATALOG EXAMPLE 76 A B C VVEGBO 488333 2 PLATE DIFF IPRELOAD P IV TYPE WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPOHATION CHEVROLET 10 40