Chevrolet Impala 2005–2006 — technical service bulletin
Bulletin 3724 · NHTSA communication 10019856 · issued May 5, 2006
Technical service bulletin
communication type
Power Train
component
2005–2006
model years
6
vehicle entries
Official summary
No drive or reverse;tcc shudder; noise with tcc applied, if 4t65e and v8 application replace torque converter. *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.