Buick Century 2000–2005 — technical service bulletin
Bulletin 04142004 · NHTSA communication 10009217 · issued Apr 14, 2004
Technical service bulletin
communication type
Electrical System
component
2000–2005
model years
12
vehicle entries
Official summary
With the ac on, led appears to toggle on and back off in one unique condition. This condition is the headlamps are on, instrument panel lamps are dimmed to the lowest extreme, daytime conditions and the rear defog button is turned on and off or allowed time to timeout. Engineering investigated has determined the condition is normal. *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.