GM09 097 A 28 9 172 PLATE VLV Z 29 9 170 SEAL KIT COMPFIES SOR SHAFT 1ST DES 2 3 30 9 175 RING SEAL SEAT RETAINER NOTE 1 ALSO PART OF O RING KIT CMPR GROUP 9 170 NOTE 2 SEAL KIT 2724319 GROUP 9 170 NOTE 3 1ST DESIGN 1984 81 PRIOR 2ND DESIGN 1985 AFTER I l V 1993 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17J ji i 4 93 9 11 I 9 090 GROUP