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GMC TSB #PIP5784
2021 GMC Sierra 1500
TSB Document:
Affected Component: STRUCTURE
- Summary
- This Preliminary information communicates to the dealer technician to inspect for a missing 1-2-7-8-R clutch fluid passage seal  or incorrect 1-2-7-8-R clutch fluid passage seal being install for a no movement concern after valve body replacement on the 8L45 or 8L90 transmissions.Â
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