SPRING CHAIRTIS TO UTILIZE THE SPRING CHARTS THE FOLLOWING STEPS SHOULD BE USED 1 OBTAIN THE SPRING CODES FROM TAGS ON ORIGINAL SPRING OR FROM THE SERVICE IDENTIFICATION LABEL LOCATED ON THE VEHICLE SEE INFORMATION IN FRONT OF CATALOG FOR EXACT LOCATION OF SERVICE IDENTIFICATION LABEL THE S P I LABEL EXAMPLE SHOWN BELOW HAS THE SPRING CODES IN BRACKETS S P I LABEL U S AND CANADA 1 G 1 B N 6 9 H X E 5 1 0 O O O I C9O C95 DF3 D30 D33 DOS E5Z E7D FFL F40 GG1 GW9 GGO GU2 G89 JA1 JA4 K05 K22 K99 LV2 WW9 WXO NA5 NB1 NK1 NK3 N33 N67 GLW T87 UJ3 U23 U35 VO8 V1O WC3 WG2 YT9 Y56 O1L SSC 42B 42I 420 42T 409 7SB 8WT 9WT 11A 90A NOTE THE FIRST DIGIT DENOTES SPRING LOCATION I E 6 LH FRONT 8 LH REAR 7 RH FRONT 9 RH REAR O FOR SINGLE SUSP RR SPRING THE SECOND AND THIRD POSITION DENOTES SPRING LOAD RATE SC WT SB WT THE SAME INFORMATION CAN BE OBTAINED UTILIZING THE R P O FICHE IN CANADA R P O FICHE IDENTIFICATION CANADA ONLY RPOZAMS A01 C49 C60 D35 D4N D9C E5Z E9Z F40 GX3 JA2 J41 K05 KGO LB6 ME9 MXO NA5 NK5 OST PB9 QMW T76 UA1 UM7 UO1 U19 U64 U73 VK3 V73 XO5 YT9 ZG4 Z31 Z49 6RZ 7RZ 71U 79D 79I 799 8BJ 9BJ 2 ONCE THE CODE HAS BEEN DETERMINED SELECT THE APPROPRIATE SERVICE REPLACEMENT FROM THE CHART 3 IN CASES WHERE THE SPRING TAGS ARE NOT AVAILABLE AND THE CODES ARE NOT ON THE S P I LABEL OR THE R P O FICHE THE DEALER CAN SELECT THE CHART TO BE USED DETERMINED BY THE MODEL ENGINE AND SUSPENSION OPTION OF THE PARTICULAR VEHICLE ANY SPRING IN THE RANGE MAY BE SELECTED BUT A GENERAL RULE OF THUMB IS TO CHOOSE A SPRING IN THE MIDDLE RANGE A HIGHER OR LOWER LOAD SPRING MAY ALSO BE SELECTED BY MOVING UP OR DOWN THE CHART FROM THAT POINT 4 WHEN THERE IS A DIFFERENCE BETWEEN PARTS USED IN THE U S AND THOSE USED IN CANADA THE U S NUMBER WILL BE FOLLOWED BY THE LETTER U AND THE CANADIAN NUMBER BY A C 1993 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 18L 1 5 93 7 5 7 412