Chevrolet Impala 2004 — technical service bulletin
Bulletin 04192004 · NHTSA communication 10009224 · issued Apr 19, 2004
Technical service bulletin
communication type
Exterior Lighting
component
2004
model years
1
vehicle entries
Official summary
As a result of a recent change in the headlamp reflector, it is now possible to eliminate the headlamp bulb shield on the low beam bulb of the headlamp assembly without any noticeable change in lighting performance. Gm voicemail express. *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.