V I I GM4 20 1982 1983 C AUTOMATIC TRANSMISSION M31 THM250C INTERNAL COMPONENTS 1982 1983 E AUTOMATIC TRANSMISSION 31 THM250C INTERNAL COMPONENTS 1982 1984 B AUTOMATIC TRANSMISSION M31 THM250C INTERNAL COMPONENTS 1982 1984 G AUTOMATIC TRANSMISSION M31 THM250C INTERNAL COMPONENTS 1984 D AUTOMATIC TRANSMISSION M31 TH 250C INTERNAL COMPONENTS 1 4 123 SHAFT TRANS INPUT 2 4 189 HOUSING FORWARD CLUTCH I 3 N S SEAL FORWARD CLUTCH PISTON INNER 1 4 N S SEAL FORWARD CLUTCH PISTON OUTER 1 I 5 4 188 PISTON FORWARDCLUTCH I 8 4 164 SEAT ASM FORWARD CLUTCH PISTON W SPRINGS 7 4 184 RING FORWARD CLUTCH PISTON RETURN SPRING SEAT RETAINER 8 4 158 WASHER INPUT RING GEAR THRUST FRONT I I 9 4 158 GEAR INPUT RING 10 4 158 BUSHING INPUT RING GEAR V 11 4 184 I SPRING FORWARD CLUTCH PISTON CUSHION V12 4 183 PLATE FORWARD CLUTCH DRIVE STEEL E 13 4 183 PLATE FORWARD CLUTCH PRESSURE STEEL 14 4 187 RING FORWARD CLUTCH PRESSURE PLATE RETAINER 15 4 183 PLATE FORWARD CLUTCH DRIVEN FACED I 18 4 158 WASHER INPUT RING GR RR THRUST 17 4 175 CARRIER ASM OUTPUT 18 4 178 BUSHING REACTION CARRIER PLANET I 19 4 159 GEAR SUN I 20 4 178 BUSHING SUN GEAR TO OUTPUT SHAFT I I I I 21 4 178 RING SUN GEAR DRIVE SHELL RETAINER 22 4 175 SHELL SUN GEAR DRIVE 23 4 178 WASHER SUN GEAR THRUST 24 4 178 WASHER SUN GEAR SHELL REAR THRUST 25 4 180 RACE LOW REVERSE OVERRUN CLUTCH 28 4 180 CLUTCH LOW REVERSE OVERRUN I 27 4 180 RING LOW REVERSE CLUTCH TO CAM RETAINER V 28 4 180 RING LOW REVERSE CLUTCH SUPT TO CASE 29 N S SUPPORT ASM LOW REV CLUTCH PART OF 26 I 30 4 183 PLATE LOW REVERSE CLUTCH DRIVE FACED 31 4 175 CARRIER REACTION PLANET V I 32 4 178 BEARING OUTPUT RING GEAR THRUST FRONT I I 33 4 187 BEARING KIT OUTPUT RING GEAR BEARING 34 4 104 BUSHING CASE TO OUTPUT SHAFT I I 35 4 178 BEARING OUTPUT RING GEAR RR THRUST 38 4 184 RING LOW 8 REVERSE CLUTCH PISTON RETURN SPRING SEAT RET I 37 4 183 PLATE L OW REVERSE CLUTCH REACTION STEEL 38 4 180 SPRING LOW REVERSE CLUTCH SUPPORT RETAINER I 39 4 184 SEAT ASM LOW REVERSE CLUTCH PISTON RETURN W SPRINGS I I I 40 4 188 PISTON LOW REVERSE CLUTCH 41 4 188 SEAL KI LOW REVERSE CLUTCH PISTON Q I 42 4 176 RING OUTPUT CARRIER RETAINER TO OUTPUT SHAFT I 43 4 178 BUSHING OUTPUT SHAFT 44 4 175 SHAFT ASM OUTPUT 45 4 345 CLIP SPEEDOMETER DRIVE GEAR TO OUTPUT SHAFT 48 4 343 GEAR SPEEDOMETER DRIVE Q NOTE 1 INCLUDED IN SEAL KIIT 4 166 I L L 1991 GENERAL MOTORS SERVICE PARTS 0PERATIONS BUICK 44W 1 8 91 4 41 4 4 000 GROUP