Buick Rainier 2003–2005 — technical service bulletin
Bulletin 050730031 · NHTSA communication 10018721 · issued Nov 1, 2005
Technical service bulletin
communication type
Power Train
component
2003–2005
model years
11
vehicle entries
Official summary
4l60-e automatic transmission torque converter clutch (tcc) shudder, water in transmission (repair transmission and replace transmission filler tube, level indicator and seal). *ak
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.