Technical Service Bulletin IB19E001A — 2018 ISUZU FTR

"SOME CUSTOMERS MAY COMPLAIN ABOUT A CLUNKING NOISE COMING FROM THE FRONT END TYPICALLY HEARD WHEN TURNING INTO AN UNEVEN ROAD SURFACE OR WHILE TURNING AND HITTING A BUMP. THIS CLUNKING NOISE MAY BE CAUSED BY THE FRONT LEAF SPRING CONTACTING THE SPRING HANGER AS SHOWN IN FIGURE 1. INSPECT THE FOUR LOCATIONS AT THE FRONT SPRING FORWARD HANGER, AS SHOWN WITH RED ARROWS IN FIGURE 2, FOR EVIDENCE OF CONTACT. IF EVIDENCE OF CONTACT IS PRESENT, REPLACE BOTH FRONT LEAF SPRINGS WITH UPDATED LEAF SPRINGS BY FOLLOWING THE PROCEDURE SET FORTH IN THE APPLICABLE WSM. THIS WILL INCREASE THE CLEARANCE AND PREVENT CONTACT IN THE FUTURE. (SEE TABLE 1.)"