GMC TSB #N182195380 01

2019 GMC Sierra 1500

TSB Document:

Affected Component: ELECTRICAL SYSTEM

Summary
Service Update. Certain vehicles equipped with a 10-speed transmission may have a condition where the downshift becomes firm after extended highway driving. Recalibrate the transmission control module (TCM).

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Date Published
DEC 11, 2018
NHTSA TSB #
10207700
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