GMC Sierra 2014–2015 — technical service bulletin
Bulletin PIT5418A · NHTSA communication 10113319 · issued Jan 11, 2017
Technical service bulletin
communication type
Equipment
component
2014–2015
model years
4
vehicle entries
Official summary
This Preliminary Information communication provides information to the technician for vehicles with a black bar while on the Bluetooth audio streaming screen or USB Media Source. This concern is a normal operating characteristic of the vehicle and no repairs should be made.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.