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2009
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Envoy 2WD L6-4.2L
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Engine Controls - Runs Rough MIL/ON DTC P0300/0306
Engine Controls - Runs Rough MIL/ON DTC P0300/0306
This TSB number 09-06-04-025, dated 05/12/09 has been superceded by TSB number 09-06-04-025A , dated 12/20/10