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TSB Document:

Affected Component: EXTERIOR LIGHTING:TAIL LIGHTS

Summary
This Preliminary information communicates an issue with the rear tail / parking lights staying on and do not time out after exiting the vehicle and passive locking the vehicle.  This condition can lead to a dead battery.  GM Engineering has released a fix and dealers are to reprogram the BCM per Customer Satisfaction Program N212344990.

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Date Published
NOV 30, 2021
NHTSA TSB #
10204464
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