Chevrolet Cobalt 2009–2010 — technical service bulletin
Bulletin SB-10-06-04-001 · NHTSA communication 10034369 · issued Sep 1, 2010
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2010
model years
12
vehicle entries
Official summary
Chevrolet/gmc/pontiac: intermittent mil/check engine light on, dtc p0442, p0446, p0451, p0452, p0453, p0454 or p0455 (install fuel tank pressure sensor cover). This condition may be caused by normal water accumulation or condensation blocking the air reference port of the fuel tank pressure sensor. *pe updated 2/07/11. *pe updated 2/25/11. *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.