Chevrolet Silverado 2007–2008 — technical service bulletin
Bulletin SB-07-08-42-006H · NHTSA communication 10025682 · issued Sep 1, 2014
Technical service bulletin
communication type
Exterior Lighting
component
2007–2008
model years
4
vehicle entries
Official summary
Information on bcm calibrations available to restore bulb outage detection on vehicles produced by a second stage manufacturer, turn signals flash fast after factory box removed (upfitter). Chassis cab models and pickups with box delete option only (rpo zw9). *pe updated 4/3/2012. *pe models 2007-13 silverado; sierra. Updated 11/28/12. *pe updated 1/24/13. *pe updated 09/03/14*lj updated 12/5/14. Pe
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.