Isuzu Ascender 2003–2006 — technical service bulletin
Bulletin 0505S006 · NHTSA communication 10018686 · issued Nov 1, 2005
Technical service bulletin
communication type
Power Train
component
2003–2006
model years
6
vehicle entries
Official summary
Malfunction indicator lamp (mil) on, transmission stuck in second or third gear, instrument cluster inoperative (verify and repair source of voltage loss in transmission solenoid power supply circuit. *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.