Isuzu Trooper 1994 — technical service bulletin
Bulletin 9805L001 · NHTSA communication 601442 · issued Jun 1, 1998
Technical service bulletin
communication type
Service Brakes, Hydraulic
component
1994
model years
1
vehicle entries
Official summary
Service information on dtc 55 (brake switch short to ground or open) and dtc 56 (brake switch short to plus). *yc
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.