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2005
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Cobalt L4-2.2L VIN F
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Engine Controls - SES Lamp ON/DTC P0420 Set
Engine Controls - SES Lamp ON/DTC P0420 Set
This TSB number 05-06-04-030, dated 04/26/05 has been superceded by TSB number 05-06-04-030B , dated 01/18/06