Service bulletin 18127

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)
Type	Service bulletin
NHTSA id	10143747
Published by NHTSA	2018-08-20
Manufacturer's number	18127
Manufacturer's date	2018-06-25
NHTSA component	SEAT BELTS

NHTSA's summary

18127 - Special Coverage. In certain vehicles, if a driver repeatedly sits on the seat belt cable cover located at the base of the driver?s seat when entering the vehicle, it may cause the seat belt pretensioner to bend sharply over the seat side shield. If this continues to occur over an extended period of time, which is very rare, the seat belt pretensioner cable may fatigue and eventually separate, which could reduce the effectiveness of the vehicle?s seat belts. Before any damage occurs to the pretensioner cable itself, signs of wear will be visible on the pretensioner cable cover where it has been repeatedly bent over the seat side shield. Dealers are to replace the pretensioner and side shield for all customers that experience a broken pretensioner cable or come to a dealership with excessive wear on the cable sleeve. The repairs will be made at no charge to the customer.

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

Seat belts

Vehicles listed
CHEVROLET SILVERADO	2017
CHEVROLET SILVERADO 2500	2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA	2017
GMC SIERRA 1500	2015, 2016 (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
2021212	2021-04-09. Seats And Restraints
21V245000	2021-04-08. SEAT BELTS:FRONT
2018233	2018-05-04. Seats And Restraints
18V291000	2018-05-03. SEAT BELTS:FRONT
2017445	2017-09-15. Seats And Restraints
17V567000	2017-09-14. SEAT BELTS:FRONT:RETRACTOR
17V437000	2017-07-10. SEAT BELTS:PRETENSIONER; AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE-INACTIVE; AIR BAGS:FRONTAL
16V651000	2016-09-08. SEAT BELTS:PRETENSIONER; AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE-INACTIVE; AIR BAGS:FRONTAL
16V209000	2016-04-12. SEAT BELTS
2016153	2016-04-11. 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
24-NA-147	2024-09-04. Service bulletin. This service bulletin provides information on regular inspection of the Seat Belt Lap Anchor.
99-09-40-005I	2023-07-28. Service bulletin. This service bulletin provides information on availability for a seat belt extender.
17367	2021-04-30. Service bulletin. The driver’s and front passenger’s seat belt retractors in certain 2017 model year Chevrolet Silverado Heavy Duty (2500 and 3500 Series) and GMC Sierra Heavy Duty (2500 and 3500 Series) vehicles may have been built with different torsion bars than were used in testing the vehicles for the Government 5- Star Safety Ratings listed on the window sticker. While these vehicles comply with all applicable government safety standards, this condition may affect the Government 5-Star Safety Ratings listed on the window sticker. Correction Customers have the choice of whether to have this replacement performed. If the customer chooses to have it completed, dealers are to replace the driver and front passenger-side seat belt retractor assemblies with assemblies containing the correct torsion bar.
17367-01	2021-04-30. Service bulletin. The driver’s and front passenger’s seat belt retractors in certain 2017-2018 model year Chevrolet Silverado Heavy Duty (2500 and 3500 Series) and GMC Sierra Heavy Duty (2500 and 3500 Series) vehicles may have been built with different torsion bars than were used in testing the vehicles for the Government 5-Star Safety Ratings listed on the window sticker. While these vehicles comply with all applicable government safety standards, this condition may affect the Government 5-Star Safety Ratings listed on the window sticker. Correction Customers have the choice of whether to have this replacement performed. If the customer chooses to have it completed, dealers are to replace the driver and front passenger-side seat belt retractor assemblies with assemblies containing the correct torsion bar.
N192289390	2020-07-20. Service bulletin. Special Coverage - If a driver repeatedly sits on the seat belt cable cover located at the base of the driver?s seat when entering the vehicle, it may cause the seat belt pretensioner to bend sharply over the seat side shield. If this continues to occur over an extended period of time, which is very rare, the seat belt pretensioner cable may fatigue and eventually separate, which could reduce the effectiveness of the vehicle?s seat belts. Before any damage occurs to the pretensioner cable itself, signs of wear will be visible on the pretensioner cable cover where it has been repeatedly bent over the seat side shield. Dealers are to replace the pretensioner and side shield for all customers that experience a broken pretensioner cable or come to a dealership with excessive wear on the cable sleeve. The repairs will be made at no charge to the customer.
18128	2018-08-20. Service bulletin. 18128 - Special Coverage. In certain vehicles, if a driver repeatedly sits on the seat belt cable cover located at the base of the driver?s seat when entering the vehicle, it may cause the seat belt pretensioner to bend sharply over the seat side shield. If this continues to occur over an extended period of time, which is very rare, the seat belt pretensioner cable may fatigue and eventually separate, which could reduce the effectiveness of the vehicle?s seat belts. Before any damage occurs to the pretensioner cable itself, signs of wear will be visible on the pretensioner cable cover where it has been repeatedly bent over the seat side shield. Dealers are to replace the pretensioner and side shield for all customers that experience a broken pretensioner cable or come to a dealership with excessive wear on the cable sleeve. The repairs will be made at no charge to the customer.
PIT5233D	2018-02-21. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that may have hard or unable to rotate ignition key concern. When the concern is present the steering wheel will need to be rotated in either direction to alleviate the pressure between the steering column lock pin and lock plate. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.
16-NA-035	2017-08-31. Service bulletin. This technical bulletin provides a procedure to replace the driver or passenger seat retractor side belt for vehicles with the condition of oversized and or stripped seat belt retractor bolts
17-NA-008	2017-08-31. Service bulletin. This technical bulletin is providing a procedure to replace the front seat belt anchor plate tensioner cover due to appearance concerns after completing product safety recall 15822.
09-09-40-001C	2017-08-15. Service bulletin. This informational bulletin provides information to advise dealers about seat belt buckles not operating and/or seat belt warning light illumination, as well as difficulty latching and unlatching the buckle or the buckle release button sticking.