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GMC TSB #18NA379

2019 GMC Terrain

TSB Document:

MC-10183163-9999.pdf

Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Summary: This technical bulletin provides a procedure to program the TCM to correct the customers concern of a MIL Illuminated, Vehicle wont go above 25 mph and/or 1-2 Shifts feel like a momentary tie up.

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Date Published: OCT 12, 2020
NHTSA TSB #: 10183163

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