Chevrolet Silverado 2007–2008 — technical service bulletin
Bulletin PIT4604 · NHTSA communication 10024527 · issued May 1, 2008
Technical service bulletin
communication type
Exterior Lighting
component
2007–2008
model years
8
vehicle entries
Official summary
Turn signals flash fast after factory box removed. *nj updated 8/25/08. *pe
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.