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Service bulletin 20-AT-016HG

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)
TypeService bulletin
NHTSA id10176181
Published by NHTSA2020-06-06
Manufacturer's number20-AT-016HG
Manufacturer's date2020-05-04
NHTSA componentPOWER TRAIN

NHTSA's summary

The automatic transmission warranty repair policy authorizes in-dealership repairs of the following components for both OEM (new) and remanufactured automatic transmissions:

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

Vehicles listed
GENESIS G802017, 2018
GENESIS G902017, 2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
24-DS-001G-1 TSB2024-11-05. Service bulletin. Certain GV70 (JK1, JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a hum or whine noise condition from the rear differential at certain speeds. This bulletin describes the procedure to inspect the vehicle for the hum or whine noise and if necessary to tighten the rear differential lock nut first. If the hum or whine noise remains, then replace the rear differential or other driveline components as necessary.
24-AT-002H2024-04-16. Service bulletin. This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2.
21-AT-010HG2024-04-11. Service bulletin. This TSB provides a procedure to replace the solenoids listed below for slipping, shift flare and/or harsh shift during the 2~3, 3~4 or 4~5 upshift.
19-AT-023HG2024-04-11. 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.
21-AT-016HG2021-10-08. 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.
21-AT-010HG-12021-10-08. Service bulletin. This Service Bulletin provides a procedure to replace the solenoids listed below for harsh shift and/or shift flare during the 2~3, 3~4 or 4~5 upshift.
21-AT-010HG2021-07-09. Service bulletin. Drive the vehicle with the ATF at normal operating temperature (158~212°F) (70~100°C). If the vehicle has a shift flare and/or harsh 2~3, 3~4 or 4~5 upshift, follow the procedure below. Dealers must check the vehicle tag on the driver’s door pillar to determine the production date.
21-01-014HG2021-04-07. Service bulletin. This TSB describes the procedure to update the TCU to revise the diagnosis logic for OBD communication test.
20-DS-002HG2020-10-08. Service bulletin. The bulletin describes the procedure to measure and set propeller shaft angles to optimize driveline vibration performance on certain 2017-2018MY 3.8L AWD G80 (DH) vehicles.
20-AT-016H2020-05-07. Service bulletin. The automatic transmission warranty repair policy authorizes in-dealership repairs of the following components for both OEM (new) and remanufactured automatic transmissions: