Chevrolet Impala (GMX 211) 2006 — technical service bulletin
Bulletin 050604076 · NHTSA communication 10019580 · issued Mar 1, 2006
Technical service bulletin
communication type
Engine and Engine Cooling
component
2006
model years
3
vehicle entries
Official summary
Intermittent extended crank on hot engine (lze, lz4, lz9)only (reprogram pcm with new service calibration). *ak
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.