GMC TSB #PIT5648C

2019 GMC Sierra 1500

TSB Document:

Affected Component: EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:120/240 VAC ELECTRICAL SYSTEM:WIRING

Summary
This Preliminary information communicates an issue with a "Trailer Disconnected Check Connection" message being displayed on the DIC without a trailer ever being connected.  Engineering has released updated software calibrations for the Trailer Lighting Control Module.

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Date Published
DEC 22, 2021
NHTSA TSB #
10206743
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