Isuzu Trooper 1998 — technical service bulletin
Bulletin SB9805L003 · NHTSA communication 615673 · issued Aug 1, 1998
Technical service bulletin
communication type
Power Train
component
1998
model years
1
vehicle entries
Official summary
On some vehicles up to vin w7907635, the front and rear output flange lock nuts of the torque-on-demand (tod) 4-wd system transfer case might be without staking. In such cases, there is a possibility that the lock nut may loosen, resulting in separation of the propeller shaft rendering the vehicle inoperative. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.