Chevrolet Malibu 2004 — technical service bulletin
Bulletin 040730021 · NHTSA communication 10012116 · issued Jul 1, 2004
Technical service bulletin
communication type
Power Train
component
2004
model years
4
vehicle entries
Official summary
Growl or howl type noise from transmission/engine compartment during light to moderate acceleration from a stop. *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.