Chevrolet Silverado 2014–2016 — technical service bulletin
Bulletin PIC6179 · NHTSA communication 10113896 · issued Mar 2, 2016
Technical service bulletin
communication type
Equipment
component
2014–2016
model years
11
vehicle entries
Official summary
This Preliminary Information communication advises the technician that vehicles with front seat Regular Production Option Codes A52, AZ3, or B3F may comment about low treble, or excessive bass from the front door speakers. This is a normal design characteristic for this seat configuration. These vehicles lack a subwoofer.
Vehicles covered
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.