# Service bulletin 19NA136

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: 10163252
- Published by NHTSA: 2019\-07\-29
- Manufacturer's number: 19NA136
- Manufacturer's date: 2019\-06\-19
- NHTSA component: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

This technical bulletin provides a procedure to change the diff fluid if found the cause of the customers concern.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10163252-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10163252-9999.pdf)

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

## Components

Equipment and accessories, Transmission and driveline, Transfer case

## Vehicles listed

- 2015 to 2019 CADILLAC ESCALADE
- 2015 to 2016 CADILLAC ESCALADE ESV
- 2017 to 2019 CADILLAC ESCALADE ESV
- 2014 to 2019 CHEVROLET SILVERADO 1500
- 2014 CHEVROLET SILVERADO 2500
- 2019 CHEVROLET SILVERADO 2500
- 2014 CHEVROLET SILVERADO 3500
- 2019 CHEVROLET SILVERADO 3500
- 2015 to 2019 CHEVROLET SUBURBAN
- 2015 to 2019 CHEVROLET TAHOE
- 2014 to 2019 GMC SIERRA 1500
- 2014 GMC SIERRA 2500
- 2019 GMC SIERRA 2500
- 2014 GMC SIERRA 3500
- 2019 GMC SIERRA 3500

## Recalls for the same vehicles and component

- [26V289000](/recalls/nhtsa/26V289000.md), 2026-05-07: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\)
- [14V374000](/recalls/nhtsa/14V374000.md), 2014-06-27: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\)

## Other bulletins for the same vehicles and component

- [14192A](/bulletins/10248736.md), 2024-01-16, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). Unwanted Transfer Case Shift to Neutral
- [14192](/bulletins/10248735.md), 2024-01-16, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). Unwanted Transfer Case Shift to Neutral
- [PIP5825](/bulletins/10234238.md), 2023-04-17, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). This Preliminary information communicates A vehicle may come in with a internal transfer case concern. Internal fault , Dealers need to disassemble to the point of failure and then do a cost comparison to determan repair VS. replacement.
- [PIP5894](/bulletins/10230699.md), 2023-01-30, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). This Preliminary information communicates proper alignment of the transfer case actuator during repair or actuator replacement
- [PIE0349A](/bulletins/10201135.md), 2021-09-07, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); ELECTRICAL SYSTEM. Engineering Information \- Service 4WD Messange Displayed and DTC C0398 \- Equipped with Switch activated transfer case \(RPO NQH\)
- [PIE0349](/bulletins/10201134.md), 2021-09-07, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); ELECTRICAL SYSTEM. Engineering Information \- Service 4WD Messange Displayed and DTC C0398 \- Equipped with Switch activated transfer case \(RPO NQH\)
- [PIE0349A](/bulletins/10190929.md), 2021-04-26, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); EQUIPMENT. Engineering Information – Service 4WD Message Displayed and DTC C0398
- [19NA136](/bulletins/10186069.md), 2021-02-01, Service bulletin: PARKING BRAKE; EQUIPMENT; POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode.
- [PIE0560A](/bulletins/10175858.md), 2020-06-01, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). This engineering information \(EI\) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a Service 4WD message being visible on the driver information center \(DIC\).
- [PIP5580C](/bulletins/10164745.md), 2019-09-16, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary information communicates the exchange program to assist engineering in identification of any early production issues.

JSON: [/v1/bulletins/10163252](/v1/bulletins/10163252)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2019NA136&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10163252&vehicle=Service%20bulletin%2019NA136)