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Yukon XL 4WD V8-5.3L
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Ignition/Engine - MIL ON, Engine Running Rough/DTC P0300
Ignition/Engine - MIL ON, Engine Running Rough/DTC P0300
This TSB number 12-06-01-001A, dated 05/09/12 has been superceded by TSB number 12-06-01-001B , dated 06/01/12