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GMC TSB #PIE0676A
2020 GMC Sierra 1500
TSB Document:
Affected Component: POWER TRAIN
- Summary
- This engineering information (EI) closure ends the need for further information from the field in regards to Engine Coolant Reservoir Being Overfilled with Discolored Coolant, Shudder, Shake, Vibration, Harsh Shift, Delayed Shift and/or Slipping Transmission Performance.
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