TSB Document:

Affected Component: ELECTRICAL SYSTEM

Summary
This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history.  That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results. 

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Date Published
OCT 14, 2020
NHTSA TSB #
10182554
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