Chevrolet Impala 2003 — technical service bulletin
Bulletin 020601039 · NHTSA communication 10000724 · issued Dec 1, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003
model years
1
vehicle entries
Official summary
Whine or growl noise from engine after cold start. *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.