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GMC TSB #PIP5807
2021 GMC Sierra 2500
TSB Document:
Affected Component: POWER TRAIN
- Summary
- This Preliminary information communicates to the dealer technician that it is a normal characteristic for vehicles equipped with the 10L1000 transmission to start off in second gear in normal driving mode. It also communicates that the vehicle will start off in first gear if tow haul is selected.
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