Service bulletin TSB_TRA096

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)
Type	Service bulletin
NHTSA id	10200512
Published by NHTSA	2021-08-25
Manufacturer's number	TSB_TRA096
Manufacturer's date	2021-08-20
NHTSA component	POWER TRAIN

NHTSA's summary

TECHNICAL SERVICE BULLETIN: 8AT (A8LR1-SBW) SOLENOID VALVE REPLACEMENT AND TCU LOGIC IMPROVEMENT - This bulletin provides the procedure to replace two (2) solenoid valves (35R and 4&OD) and improve the gear shift logic of the Transmission Control Unit (TCU) on some 2015-2016MY K900 (KH) vehicles, equipped with Tau 5.0L engine and 8-speed automatic transmission w/Shift-By-Wire (A8LR1-SBW), which may exhibit symptoms of abnormal shift shock during an upshift (2nd-->3rd, 3rd-->4th, 4th-->5th). This condition occurs on vehicles with mileage over 12,000 miles and may be due to possible premature wear of the solenoid valve. To correct this concern, replace the 35R and 4&O/D solenoid valves with added “H” ventilation port, perform TCU relearn, and, if applicable, apply the improved logic to the Transmission system using the KDS ECU Upgrade function as described in this bulletin.

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
KIA K900	2015, 2016

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
TSB_TRA046_R5	2025-04-23. Service bulletin. TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, and the transmission oil cooler is transferred to the new transmission.
TSB_TRA046_R4	2024-06-04. Service bulletin. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced.
TSB_TRA046_R3	2022-12-06. Service bulletin. TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, refer to applicable vehicles in the chart starting on page 2.
TSB_TRA046_R1	2020-05-05. Service bulletin. TECHNICAL SERVICE BULLETIN: - TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, refer to applicable vehicles on page 2. Refer to the shop manual on KGIS for the specific Kia model for the correct transmission fluid check/fill procedures.
TSB_TRA085	2020-01-04. Service bulletin. TECHNICAL SERVICE BULLETIN: DCT ACTUATOR ROD LENGTH ADJUSTMENT - This bulletin provides the procedure to adjust the Dual Clutch Transmission (DCT) actuator rod lengths using the applicable SST on some 2016MY~ vehicles equipped with 6 speed DCT (D6KF1) or 7 speed DCT (D7UF1) in order to prevent unnecessary replacement of both the DCT clutch actuator and clutch set together.
TSBTRA067	2018-01-16. Service bulletin. TSB - AUTOMATIC TRANSMISSION OIL PRESSURE CHARACTERISTIC VALUES DATA TRANSFER - This bulletin provides information regarding data transfer of automatic transmission (A/T) characteristic values on 2015MY-2018MY K900 (KH) vehicles equipped with A8TR1 8-speed A/T and 2017MY~ Sportage (QL), Forte (YDm), and Cadenza (YG) vehicles equipped with the GEN2 Type (A6MF2-2 6-speed / A8LF1 8-speed) A/T. The type of solenoid valve used to control gear shifts changed from indirect to direct control type to reduce oil capacity and improve fuel efficiency.
PS430_CLOSED	2018-01-16. Service bulletin. PS430 CLOSED. REFER TO TSB TRA067.
PS496	2017-08-25. Service bulletin. PITSTOP: CUSTOMER TIP: ACCELERATOR PEDAL FUNCTION/DESCRIPTION - On all K900 (KH), Cadenza (VG, YG), and Optima (JF, JFa, JF-HEV, JF-PHEV) vehicles, the accelerator pedal features a small detent with a spring to provide increased resistance to help avoid unnecessary fuel consumption when applying full throttle. When the driver depresses the pedal beyond the resistance where the detent is felt (above 85% WOT), the pedal will easily reach WOT and kickdown shift will occur accordingly. For additional information, refer to the individual vehicle?s Owner?s Manual under section ?Driving Your Vehicle? ? Automatic Transmission (Drive).
TSB-TRA054R1	2017-08-02. Service bulletin. TSB: COMBINED TSB/SERVICE ACTION: K900 (KH) SHIFT LOGIC IMPROVEMENT - TCM UPGRADE (SA174) - This bulletin provides information related to an upgrade of the TCM software for 2015MY K900 vehicles, produced prior to April 30, 2014, which may exhibit a ?rough shift feeling? concern, particularly when downshifting from third to second gear.
PS430	2017-01-13. Service bulletin. 8-SPEED TRANSMISSION REPLACEMENT REQUIREMENTS - ON K900 (KH) VEHICLES, THE 8-SPEED TRANSMISSION (A8TR1) HAS PRECISE DIRECT SOLENOID CONTROL FOR THE CLUTCH AND BRAKE SYSTEM INSIDE THE TRANSMISSION. DUE TO HYDRAULIC PRESSURE VARIANCE AT THE TIME OF TRANSMISSION AND SOLENOID PRODUCTION, SHOCK OR SHIFT DELAY MAY OCCUR DURING GEAR SHIFT AFTER REPLACEMENT. IN RESPONSE TO THIS PRESSURE VARIANCE, THE HYDRAULIC PRESSURE IS RECORDED IN A BAR CODE FORMAT AND AFFIXED IN THE FORM OF TWO LABELS (A) ON THE LEFT SIDE OF THE TRANSMISSION. WHENEVER THE TCM AND/OR 8-SPEED TRANSMISSION IS REPLACED, THE BAR CODE VALUE MUST BE ENTERED (B) INTO GDS/KDS BY FOLLOWING THE PROCEDURE OUTLINED ON KGIS.