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Service bulletin PIC6179A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10125139
Published by NHTSA2017-12-14
Manufacturer's numberPIC6179A
Manufacturer's date2017-11-30
NHTSA componentSEATS

NHTSA's 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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Seats

Vehicles listed
CHEVROLET SILVERADO 15002014, 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002014, 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20212122021-04-09. Seats And Restraints
20182332018-05-04. Seats And Restraints
20174452017-09-15. Seats And Restraints
20161532016-04-11. Seats And Restraints
20143152014-07-29. Seats And Restraints
14V4460002014-07-23. SEATS
13V4880002013-10-17. SEATS:FRONT ASSEMBLY:HEAD RESTRAINT
20133502013-10-04. Seats And Restraints

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
PIT61802024-08-13. Service bulletin. This Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.
06-00-89-029V2024-05-16. Service bulletin. This service bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability.
PI1354J2024-02-14. Service bulletin. This preliminary bulletin provides additional guidance for diagnosing vibrations or disturbances that may occur on full size pickups and how to correct and repair.
14340B2024-01-16. Service bulletin. Incomplete Weld on the Seat Hook Bracket Assembly
143402024-01-16. Service bulletin. Incomplete Weld on the Seat Hook Bracket Assembly
PI3541J2024-01-04. Service bulletin. This preliminary bulletin provides additional guidance for diagnosing vibrations or disturbances that may occur on full size pickups and how to correct and repair.
13323A2023-12-11. Service bulletin. F/CMVSS NONCOMPLIANCE RECALL - Manual Seatback Recliner Lever
PIT52232023-12-04. Service bulletin. Front Driver Or Passenger Seat Cover / Cushion Loose.
PIT52222023-12-04. Service bulletin. Center Seat Accessory Power Outlet Inoperative.
PIT57452020-08-10. Service bulletin. This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.