Chevrolet Impala 2002 — technical service bulletin
Bulletin 121101 · NHTSA communication 628109 · issued Nov 12, 2001
Technical service bulletin
communication type
Power Train
component
2002
model years
2
vehicle entries
Official summary
Some vehicles with the 4t65e transmissions may exhibit diagnostic trouble code p0730 after the installation of a serta. *tt
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.