T21 The following system will be used to identify service transmission assemblies domestically produced This number system applies to complete service transmission assemblies only Transmission cases are no longer identified Manufacturing Plants will number each service assembly as it is produced The first letter will designate the GM Division which produced the unit C Chevrolet The second letter will indicate the type of unit T Transmission The number following the letter will I designate the model year 9 1979 The last five digits specify the service replacement sequence number Thegroup of numbers to be used by Chevrolet Manufacturing plants are as follows PLANT SERIAL SEOUENCE Tremec Ind Dlvision of Clark Equipment 0001 to 9999 Chevrolet Parma Transmission Plant 00001 to 14999 Chevrolet Toledo Transmission Plant 15000 to 24999 Chevrolet Muncie Transmission Plant 25000 to 44999 Hdyra Matic 400 00001 to 99999 Hydra MatIc transmissions will be numbered with the letter H regardless of the GM divlsion using the transmission EXAMPLE Number CT 800175 designates Chevrolet Transmission year and 175th unit produced for service at Parma Upon completion of the serial sequence the plant will reuse the above numbers using e letter prefix such as e A B or C to indicate late production transmission for example CTA 900001 1979 TRUCK A TRANSMISSION IDENTlFlCA I ION INFORMATION Q CK LIGHT DUTV G TRUCK 465444 R3 MAN 14000343 SXIMANJ 465445 R4IMAN I 14000344 SVIMANJ 476789 Z2lMAN I 14000345 SZ MAN 14000340 ST MAN 1402 07 MCIMANJ 14000341 SUlMAN I 8629711 SCMIAUTOJ 14000342 SWIMANJ 8640954 6TDIAUTO I 14020806 MBIMANJ 8640961 6TLIAUTO 8629711 6CMIAUTO I 8640962 6WJIAUTO I 8629713 6CJIAUTO I 8640963 BTN AUTO 8629714 SCPIAUTOJ 8640968 6TWIAUTO I 8629716 6CZ AUTO 8640969 GWKIAUTOJ 8629717 SCKIAUTOJ 8640971 GTZ AUTOJ V 8629719 6CFlAUTO I 8640974 6WCIAUTO 8629720 6CGlAUTO 8629721 6CH AUTO P TRUCK 8629746 6CWlAUTO l 465444 R3lMAN l 8640955 6WH AUTOJ 465446 R5 MAN 8640956 6TFlAUTO 14000346 UB MANJ 8640958 6THIAUTO l 14020808 MDIMANJ 8640959 GTJIAUTOJ 8629711 SCMIAUTOJ 8640960 6W AUTO 8629713 6CJIAUTO I 8640970 6TYlAUTO I 8629723 SCUAUTOJ 8629712 GCTIAUTOJ 8640957 GWTIAUTOJ 8629747 6CO AUTO 8640959 6TJIAUTO WAREHOUSING AND DISTRIBUTION DIVISIDN OF GENERAL MOTORS CORPORATION LT TRUCK SZA 42 REV 1 84