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GMC TSB #PIC6179A
2015 GMC Sierra 2500
TSB Document:
Affected Component: SEATS
- 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.
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