Isuzu Ascender 2003–2006 — technical service bulletin
Bulletin 0505S012 · NHTSA communication 10018682 · issued Nov 1, 2005
Technical service bulletin
communication type
Power Train
component
2003–2006
model years
6
vehicle entries
Official summary
4l60 automatic transmission diagnostic information on harsh 1-2 upshift. *jb
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.