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Service bulletins for the 2018 GMC Sierra

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.

1723 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Seats are shown. Show all

Bulletins, newest first
PIT61802024-08-13. Service bulletin. SEATS. 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. SEATS; UNKNOWN OR OTHER. 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. ENGINE AND ENGINE COOLING; STEERING; SEATS; POWER TRAIN; WHEELS. This preliminary bulletin provides additional guidance for diagnosing vibrations or disturbances that may occur on full size pickups and how to correct and repair.
PI3541J2024-01-04. Service bulletin. STEERING; POWER TRAIN; WHEELS; SEATS. This preliminary bulletin provides additional guidance for diagnosing vibrations or disturbances that may occur on full size pickups and how to correct and repair.
PIT57452020-08-10. Service bulletin. ELECTRICAL SYSTEM; SEATS. This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.
N1922850502020-03-23. Service bulletin. SEATS; EQUIPMENT ADAPTIVE/MOBILITY. Customer Satisfaction Program - Certain vehicles that had the front passenger seat cushion frame previously replaced, may not have had the adjuster stops transferred and are missing on the replacement part. The front passenger seat may be in a position beyond the occupant design travel range.Dealers are to inspect the front passenger seat tracks for the presence of both adjuster stops and install missing adjuster stops if necessary.
18NA3772019-05-20. Service bulletin. SEATS. This technical bulletin provides repair information to correct a customer concern of front seat lateral movement and/or click type noise while driving.
060850009J2019-03-25. Service bulletin. SEATS; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides information for information on passenger presence sensing system (PPS or PSS) concerns with custom upholstery, accessory seat heaters or other comfort enhancing devices.
18NA3772019-03-25. Service bulletin. SEATS. This technical bulletin provides repair information to correct a customer concern of front seat lateral movement and/or click type noise while driving.
PIT56242018-08-20. Service bulletin. SEATS. This Preliminary information communicates a diagnostic tip for an issues with the heated and/or vented seats turning off and setting DTCU1524 because of a loss of voltage to the Seat Heating Control Module.
PIT5380C2018-06-18. Service bulletin. EQUIPMENT; SEATS. This Preliminary Information communication provides information to the technician about vehicle that may have a front driver's or passenger's seat back may lean or be turned outward. Technician will need to remove the seat bottom trim cover and reinstall it completely and squarely to the cushion to correct the concern.
PIC6179A2017-12-14. Service bulletin. SEATS. 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 summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.