# Service bulletin 17426

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.

- Type: Service bulletin
- NHTSA id: 10191103
- Published by NHTSA: 2021\-04\-30
- Manufacturer's number: 17426
- Manufacturer's date: 2017\-11\-01
- NHTSA component: EQUIPMENT; POWER TRAIN:MANUAL TRANSMISSION

## NHTSA's summary

Condition Certain 2018 model year Chevrolet Silverado and GMC Sierra vehicles, equipped with the manual shift transfer case \(RPO NQG\), may have a condition in which the transfer case shift linkage rod bolt torque is less than specified. Over time this bolt could loosen enough to allow the transfer case shift indicator to be inaccurate; or the bolt could fall off causing the transfer case to remain in its previous position and the shifter to be non\-functional. Correction Tighten the transfer case shift linkage rod bolt to the specified torque

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10191103-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10191103-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories, Transmission and driveline, Manual transmission

## Vehicles listed

- 2018 CHEVROLET SILVERADO 1500
- 2018 GMC SIERRA 1500

## Other bulletins for the same vehicles and component

- [990420002L](/bulletins/10200154.md), 2021-08-09, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
- [030729004L](/bulletins/10160133.md), 2019-05-20, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION; EQUIPMENT. This informational bulletin provides normal operating characteristics and diagnostic information on Manual transmissions.
- [PIP5576](/bulletins/10145501.md), 2018-10-15, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN. This Preliminary information communicatesSES lamp, setting DTC P0333 when shifting the Transmissionfrom park.DTC P0333 cansetdue to voltage from the Transmission park/neutral signal 1circuit bleeding into the knock sensor system circuits.If SI does not isolate the concern inspect the K20 ECM connector X2 looking for debris, connectorand or terminal concerns.
- [17NA228](/bulletins/10137269.md), 2018-05-21, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION. This informational bulletin provides information on Click or Tick Noise on 3\-4 Shift that it should be considered a normal characteristic.

JSON: [/v1/bulletins/10191103](/v1/bulletins/10191103)

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