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Service bulletin 19-AT-004HG

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 id10158795
Published by NHTSA2019-04-22
Manufacturer's number19-AT-004HG
Manufacturer's date2019-03-05
NHTSA componentPOWER TRAIN; ENGINE AND ENGINE COOLING

NHTSA's summary

This bulletin provides the procedure to replace the O-ring to the automatic transmission fluid (ATF) warmer connector on some vehicles which may exhibit a coolant leak between the ATF connector and engine side heater pipe.

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

Engine, 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.

Recalls for the same vehicles and component
20241582024-03-08. Engine
24V1910002024-03-08. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
19V5380002019-07-19. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
20193502019-07-17. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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.
23-01-037HG2023-07-01. Service bulletin. Certain 2017-2020MY G80 vehicles may exceed evaporative emissions standards due to Onboard Refueling Vapor Recovery (ORVR) system. To correct this symptom, install an auxiliary canister assembly between the canister and Canister Close Valve (CCV).
23-01-037HG2023-07-01. Service bulletin. Certain 17-18MY Genesis G80 (DH) vehicles may exceed evaporative emissions standards due to Onboard Refueling Vapor Recovery (ORVR) system. To correct this symptom, an auxiliary canister assembly between the canister and Canister Close Valve (CCV) will be installed.
23-01-037G2023-05-04. Service bulletin. Certain 2017-2020MY G80 vehicles may exceed evaporative emissions standards due to Onboarding Refueling Vapor Recovery (ORVR) system. To correct this symptom, install an auxiliary canister assembly between the canister and Canister Close Valve (CCV).
23-01-037G2023-05-04. Service bulletin. Certain 2017-2020MY G80 vehicles may exceed evaporative emissions standards due to Onboard Refueling Vapor Recovery (ORVR) system. To correct this symptom, install an auxiliary canister assembly between the canister and Canister Close Valve (CCV).
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.