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 | 10186069 |
| Published by NHTSA | 2021-02-01 |
| Manufacturer's number | 19NA136 |
| Manufacturer's date | 2020-12-01 |
| NHTSA component | PARKING BRAKE; EQUIPMENT; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
NHTSA's summary
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.
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
Brakes, Equipment and accessories, Transmission and driveline, Parking brake, Transfer case
| CADILLAC ESCALADE | 2015, 2016, 2017, 2018, 2019 |
|---|---|
| CADILLAC ESCALADE ESV | 2015, 2016 (the catalog's model; the bulletin names a series or trim of it) |
| CADILLAC ESCALADE ESV | 2017, 2018, 2019 |
| CHEVROLET COLORADO | 2015, 2016, 2017, 2018 |
| CHEVROLET COLORADO | 2020, 2021 |
| CHEVROLET SILVERADO 1500 | 2014 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 4500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2015, 2016, 2017, 2018, 2019 |
| CHEVROLET TAHOE | 2015, 2016, 2017, 2018, 2019 |
| GMC CANYON | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| GMC SIERRA 1500 | 2014 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2015, 2016, 2017, 2018, 2019 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V289000 | 2026-05-07. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
|---|---|
| 14V374000 | 2014-06-27. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 14192A | 2024-01-16. Service bulletin. Unwanted Transfer Case Shift to Neutral |
|---|---|
| 14192 | 2024-01-16. Service bulletin. Unwanted Transfer Case Shift to Neutral |
| PIP5825 | 2023-04-17. Service bulletin. 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 | 2023-01-30. Service bulletin. This Preliminary information communicates proper alignment of the transfer case actuator during repair or actuator replacement |
| PIP5810A | 2022-10-17. Service bulletin. This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development. |
| 18367 | 2022-05-31. Service bulletin. Customer Satisfaction. Certain vehicles, equipped with the 10-speed automatic transmission (RPO MF6), may have a condition in which the transmission manual shaft pin was not seated properly. If the shaft pin were to migrate out of position, the driver may find they cannot shift the vehicle into any gear other than the last one selected. The customer may be unable to return the vehicle back to park, in which case they would be required to engage the parking brake to ensure the vehicle does not roll from its intended position. Dealers will replace the transmission manual shaft pin. Private Message sent to select dealers. |
| PIT5662G | 2022-04-18. Service bulletin. This Preliminary information communicates information to diagnose DTC C056D or C056E. |
| 20-NA-207 | 2022-03-16. Service bulletin. This service bulletin informs the technician to inspect for a possible electrical concern at the ECM X2 electrical connector to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated - DTC P0333 Set. |
| PIT5662F | 2021-09-13. Service bulletin. This Preliminary information communicates information to diagnose DTC C056D or C056E. |
| PIE0349A | 2021-09-07. Service bulletin. Engineering Information - Service 4WD Messange Displayed and DTC C0398 - Equipped with Switch activated transfer case (RPO NQH) |