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GMC TSB #PIP5705
2020 GMC Sierra 1500
TSB Document:
Affected Component: STRUCTURE
- Summary
- This Preliminary information communicates A vehicle may have a concern of a vibration or drone around 40 MPH and 1200 RPM under a light load.  Debris in the tranmission mount. Inspect the transmission mount for debris. If debris is found, clean the mount, reinstall and evaluate for the concern.
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