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Service bulletins for the 2018 Genesis G90

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.

67 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Automatic transmission are shown. Show all

Bulletins, newest first
19-AT-023HG2024-04-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. 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-011HG2019-07-01. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. The procedure describes the procedure to check the ATF level for 8-speed Rear-Wheel-Drive vehicles.
19-FL-003HG2019-05-20. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. This bulletin provides the procedure to write the Vehicle Identification Number (VIN) during the replacement of the Engine Control Module (ECM) or Powertrain Control Module (PCM). Once the VIN has been programmed to the ECM/PCM, it cannot be removed or overwritten.
19-AT-007HG2019-05-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the TCM learning time and improve the shift quality.
19-AT-001HG2019-03-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. When servicing a vehicle with a ?Check Engine light? and any of the DTCs listed below, follow the Service Procedure and replace the E-module.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.