Service bulletin 21-AT-012G
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 | 10253038 |
| Published by NHTSA | 2024-04-11 |
| Manufacturer's number | 21-AT-012G |
| Manufacturer's date | 2020-07-27 |
| NHTSA component | POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN |
NHTSA's summary
This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the TCU learning time and improve the shift quality. • Before replacing an automatic transmission (Pages 2~3): Input the data from the new transmission into the TCU using the GDS. • Before replacing a TCU (Pages 4~6): Back up the oil pressure data from the old TCU into the GDS and then transfer the data to the new TCM.
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
Transmission and driveline, Automatic transmission
| GENESIS G70 | 2019, 2020, 2021, 2022 |
|---|---|
| GENESIS G80 | 2019, 2020, 2021, 2022 |
| GENESIS G90 | 2019, 2020, 2021, 2022, 2023, 2024 |
| GENESIS GV70 | 2022, 2023, 2024, 2025 |
| GENESIS GV80 | 2021, 2022, 2023, 2024 |
| GENESIS GV80 Coupe | 2025 (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.
| 19-AT-014G | 2024-04-11. Service bulletin. This bulletin provides a procedure to diagnose an 8-speed automatic transaxle with a harsh and/or delayed shift. |
|---|---|
| 19-AT-007G | 2024-04-11. Service bulletin. This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the TCU learning time and improve the shift quality. • Before replacing an automatic transmission: Input the data into the TCU using the GDS. • Before replacing a TCU: Back up the oil pressure data from the old TCU into the GDS and then transfer the data to the new TCM. |
| 19-AT-023G | 2024-04-11. Service bulletin. If you are servicing a vehicle with a transmission slipping concern, follow the Service Procedure shown below and perform a stall test. This TSB provides a procedure to test each clutch in the transmission. If the vehicle fails the stall test, replace the transmission. PASS: Stall speed is between 1700~2900 rpm (See shop manual for stall speed). FAIL: Engine revs to redline limit (6,000~6,500 rpm). If so, replace the transmission. |
| 19-AT-012G | 2024-04-11. Service bulletin. This TSB provides a procedure to diagnose and repair a transaxle for the following Incorrect Ratio DTC (transaxle clutch slipping more than 200 rpm in gear). |
| 19-AT-008G | 2024-04-11. Service bulletin. When servicing a vehicle with a “Check Engine light” and any of the DTCs listed below, follow the Service Procedure to replace the related solenoid and E-module or park position switch. |