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Sierra 1500 4WD V8-5.3L
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A/T - Won't Shift Into Overdrive/DTC P0777 or P0735
A/T - Won't Shift Into Overdrive/DTC P0777 or P0735
This TSB number 10-07-30-008, dated 05/04/10 has been superceded by TSB number 10-07-30-008B , dated 11/10/10