Chevrolet Cobalt 2005–2006 — technical service bulletin
Bulletin 4066 · NHTSA communication 10020218 · issued Aug 19, 2006
Technical service bulletin
communication type
Exterior Lighting
component
2005–2006
model years
4
vehicle entries
Official summary
Turn signals will not cancel intermittently. *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.