Chevrolet Silverado 2007–2009 — technical service bulletin
Bulletin SB-070842006C · NHTSA communication 10030591 · issued Nov 1, 2010
Technical service bulletin
communication type
Exterior Lighting
component
2007–2009
model years
6
vehicle entries
Official summary
General motors: bcm calibrations available to restore bulb outage detection on vehicles produced by a second state manufacturer, turn signals flash fast after factory box removed (upfitter). May need to have body control module (bcm) rear turn signal bulb outage detection capability changed. *pe updated 5/20/11. *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.