I 4 SPEED MANUAL TRANSMISSION 4 380 SYNCHRONIZER Transmission Synchronizer Con t 85 87 S1 M73 94169566 1 131 00 SYNCHRONIZER 3RD 4TH SPD PG4 7 32 f 85 87 S1 M73 94169568 1 135 00 SYNCHRONIZER 1ST 2ND SPD PG4 7 40 85 87 ST1 MC9 15619566 1 N L SYNCHRONIZER 3RD 4TH PG4 3 30 4 383 RING Transmission Synchronizer I 82 87 S1 M73 94241902 2 57 00 RING BLOCK 1ST 2ND SPD PG4 7 45 82 87 S1 M73 94421888 2 48 75 RING BLOCK 3RD 4TH SPD PG4 7 37 82 84 ST1 M77 J 14050737 2 21 60 RING 1ST 2ND SPD SYN BLOCKING PG4 3 15 82 84 ST1 M77 14050746 2 N L RING 3RD 4TH SPD SYN BLOCKING PG4 3 25 82 83 ST1 M77 14058968 1 1 30 RING SYN RET PG4 1 1 25 84 ST1 M77 1ST DES 14058968 1 1 30 RING SYN RET CODES 4NB 4NC 4HJ 4NM N0 COMPARABLE 2ND DES PG4 11 25 85 87 ST1 MC9 14050737 2 21 60 RING 1ST 2ND SPD SYN BLOCKING 0 PG4 3 15 85 87 ST1 MC9 14050746 2 N L RING 3RD 4TH SPD SYN BLOCKING A PG4 3 25 4 384 INSERT KEY SPRING Transmission Synchronizer 4 82 87 S1 M73 94030598 6 2 05 INSERT SYN PG4 7 35 4 82 ST1 M77 14050745 3 1 65 KEY 3RD 4TH SPD SYN PG4 19 33 82 84 ST1 M77 14085894 3 1 10 KEY 1ST 2ND SPD SYN PG4 3 35 83 ST1 M77 1ST DES 14050745 3 V 1 65 KEY 3RD 4TH SPD SYN 2ND DES IDENT BY WINGED FLANGES ON SIDES OF KEY 1ST DES HAS NO WINGED V FLANGES PG4 19 33 83 ST1 M77 2ND DES 14083521 3 1 10 KEY 3RD 4T H SPD SYN 2ND DES IDENT BY WINGED FLANGES ON SIDES I A OF KEY 1ST DES HAS NO WINGED 4 FLANGES PG4 3 28 84 ST1 M77 14083521 3 1 10 KEY 3RD 4TH SPD SYN PG4 3 28 85 87 ST1 MC9 14083521 3 1 10 KEY 3RD 4TH SPD SYN PG4 3 28 f 85 87 ST1 MC9 140858944 3 1 10 KEY 1ST 2ND SPD SYN PG4 3 35 82 87 S1 M73 V 94026292 2 89 SPRING INSERT 3RD 4TH PG4 7 36 82 87 S1 M73 94238766 1 1 15 SPRING INSERT 1ST 2ND PG4 7 44 82 84 ST1 M77 15618013 4 98 SPRING 1ST 2ND 3RD 4TH SYN PG4 3 12 83 S1 M73 2ND DES 94115594 1 1 20 SPRING BACKLASH INHIBITOR 1ST 2ND NO CMPARABLE 1ST DESIGN PG4 8 69 4 83 S1 M73 2ND DES 94115618 1 89 SPRING BACKLASH INHIBITOR 3RD 4TH NO COMPARABLE 1ST DES I PG4 8 68 84 87 S1 M73 94115594 1 1 20 SPRING BACKLASH INHIBITOR 1ST 2ND PG4 8 69 84 87 S1 M73 94115618 1 89 SPRING BACKLASH INHIBITOR 3RD 4TH PG4 8 68 84 85 ST1 MB1 15618013 4 98 SPRING 1ST 2ND 3RD 4TH SYN PG4 3 12 I 85 87 ST1 MC9 15618013 4 98 SPRING 1ST 2ND 3RD 4TH SYN PG4 3 12 4 395 GEAR Transmission Second Speed 1 82 87 S1 M73 94248181 1 142 00 GEAR 2ND SPD PG4 7 39 82 83 ST1 M77 14050740 1 78 25 GEAR 2ND SPD PG4 11 34 84 ST1 M77 1ST DES 14050740 1 78 25 GEAR 2ND SPD TRANS CODES 4NB V 4NC 4NJ 4NM PG4 11 34 84 ST1 M77 2ND DES 15585187 1 136 00 GEAR 2ND SPD TRANS CODES GAP V GAR GAT 31 TEETH PG4 15 38 85 87 ST1 MC9 15585186 1 136 00 GEAR 2ND SPD 31 TEETH PG4 3 34 4 398 RING WASHER Transmission Shaft and 2nd Speed Gear Thrust 82 84 ST1 M77 14058960 1 84 RING 2ND SPD GR THR WA RET PG4 3 32 85 87 ST1 MC9 14058960 1 84 RING 2ND SPD GR THR W A RET PG4 3 32 82 84 ST1 M77 14050741 1 4 10 WASHER 2ND SPD GR THR PG4 3 33 85 87 ST1 MC9 14050741 1 4 10 WASHER 2ND SPD GR THR PG4 3 33 1990 GENERAL MOTORS SERVICE PARTS 0PERAT 0NS LT TRUCK 52S t t REV 10 90 4 21 4 380 4 398