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Envoy 2WD L6-4.2L
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A/T Controls Highway Speed Booming/Rumbling Noises
A/T Controls Highway Speed Booming/Rumbling Noises
This TSB number 09-07-30-003A, dated 01/29/09 has been superceded by TSB number 09-07-30-003B , dated 07/31/09