Cadillac Cadillac Truck 2003 — technical service bulletin
Bulletin 050703 · NHTSA communication 10003636 · issued May 7, 2003
Technical service bulletin
communication type
Interior Lighting
component
2003
model years
3
vehicle entries
Official summary
New tech line software available to reduce indicator bulb illumination by 65% due to reports that the instrument cluster highbeam indicator is too bright. 2003 chevrolet, gmc and cadillac full-size pick-up and utility trucks. *tt
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.