Chevrolet Impala 2003 — technical service bulletin
Bulletin 040602004 · NHTSA communication 10008500 · issued Aug 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003
model years
1
vehicle entries
Official summary
Engine oil leak from right side of engine. *mj this bulletin replaced previous bulletin dated 05/01/2004. *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.