GROUP

NUMBER

CAMPAIGN
DATE

23-01-021G
MODEL(S)

APRIL 2023

GV80 (JX1)

Technical Service Bulletin
SUBJECT:

3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING
(SERVICE CAMPAIGN T25G)

 IMPORTANT
Dealers must perform this service campaign on all affected vehicles prior to customer retail delivery
and whenever an affected vehicle is in the shop for any maintenance or repair.
Access the “Vehicle Information” screen via WEBDCS to identify open campaigns.
Description: On certain 2022MY GV80 (JX1) vehicles, the turbo oil feed pipe mating surface on the
engine may have been scratched during the manufacturing process. This scratch could cause an oil
leak. This bulletin provides the procedure to polish the oil feed pipe mating surfaces and replace the
gaskets.

STUI
This TSB includes STUI pictures as a requirement. Where indicated, please include the last
6 digits of the VIN and date of repair on a piece of paper. Ensure the VIN and date of repair
are clearly visible. Finally, please ensure the captured pictures are completed according to
the steps in this TSB and uploaded to STUI. All claims submitted that have illegible,
incomplete, missing, or incorrect picture(s) are subject to debit.

Applicable Vehicles: Certain 2022MY Genesis GV80 (JX1) vehicles produced from 11/25/2021 to 1/25/2022

Parts Information:
PART NAME PART NUMBER

SERVICE
KIT

28241-3N110

DESCRIPTION

QTY.

NBR 300㎛ coated gasket

2 EA

Rough stone
(GT700200305130521)

1 EA

Soft stone
(GT700200212080846)

1 EA

Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

EAR PLUGS

N/A

Foam type disposable
safety ear plugs
(Locally sourced)

1 PAIR

Warranty Information:
MODEL OP CODE

GV80
(JX1)

20D015R0

OPERATION

OP TIME

TURBOCHARGER OIL FEED
REWORK (LH or RH ONLY)

9.9M/H

CAUSAL PART

NATURE CAUSE
CODE
CODE

28231-2T000
E74
ZZ2
TURBOCHARGER OIL FEED
20D015R1
10.4M/H
REWORK (BOTH SIDES)
NOTE 1: Submit claim on Campaign Claim Entry Screen.
NOTE 2: If a part that is not covered by this campaign is found in need of replacement while
performing campaign and the affected part is still under warranty, submit a claim using the same
repair order. If the affected part is out of warranty, submit a Prior Approval request for goodwill
consideration prior to performing the work.
NOTE 3: The incident parts are subject to callback through the normal Warranty Technical Center
(WTC) parts return process. Claim is subject to debit if part is requested and not returned.
NOTE 4: The op times include taking a STUI picture and uploading. The picture must include
installation of the new coated gasket along with the last six digits of the VIN and date of the repair on
a piece of paper. If not included, claim will be subject to debit.
Service Procedure:
TURBOCHARGER OIL FEED REWORK (LH SIDE)
1.

Remove the engine and transmission assembly
according to the vehicle shop manual.
 Engine Mechanical System > Engine and
Transmission Assembly > Engine and
Transmission Assembly

TSB #: 23-01-021G

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SUBJECT:

SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

2.

Loosen the LH turbo charger oil feed pipe
mounting fasteners (A).
Tightening Torque:
• 9.8 ~ 11.8 Nm (7.2 ~ 8.7 lb-ft)

!

CAUTION

Be careful not to damage the oil
feed pipe.

3.

Inspect the turbo oil feed mating surface on the
LH side cylinder head for scratches.
 If a scratch is found, continue to the next step.
 If no scratch is found, reinstall the removed
parts from Step 2 above in reverse order of
removal and continue to TURBOCHARGER
OIL FEED REWORK (RH SIDE) in the
following pages.

4.

Remove the hoist lifting bracket from the rear of
the LH cylinder head using a 14mm socket.
Tightening Torque:
• 44.1 ~ 53.6 NM (32.5 ~ 39.8 lb-ft)

5.

Modify an earplug to use as a plug for the oil feed
hole by cutting the cord about an inch from the
end of the earplug.

TSB #: 23-01-021G

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SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

6.

Fold the remaining cord attached to the earplug
over so that it can be used as a loop to later
remove it from the hole.

 Compress the earplug and insert it just past
flush of the oil feed hole surface, so that no
debris can enter.

!

CAUTION

Ensure that the plug is only
inserted just past flush with the
surface so that it can be easily
removed.

7.

Wrap the oil feed pipe (C) using fabric as shown
or cover with masking tape to prevent debris from
entering.

8.

Using a permanent marker, mark the oil feed
surface so that the entire face is covered.
 This will help to identify when the entire
scratch has been removed.

TSB #: 23-01-021G

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SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

9.

Cut both polishing stones in half before using
them.
NOTE: A set of stones cut into 2 pieces each
can be used to repair at least 2 vehicles.

10. Lubricate the supplied rough stone
(GT700200305130521) and oil feed surface
using soapy water, WD40 or equivalent lubricant.

11. Polish the pipe adhesive surface (E) using rough
120 grit stone (GT700200305130521) until the
groove (F) and any marker that was applied
within the scratch is no longer visible.
 While polishing using a side-to-side motion,
be sure to work the stone up and down so
that the entire surface is evenly polished.
 Periodically spray the stone with lubricant
during this process to clear any debris from its
surface.

TSB #: 23-01-021G

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SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

12. Lubricate the supplied soft 400 grit stone
(GT700200212080846) and oil feed surface
using soapy water, WD40 or equivalent.

13. Polish the pipe adhesive surface (E) using soft
400 grit stone until the surface of the oil feed
boss is smooth and free of any scratches left
behind by the rough polishing stone.
 While polishing using a side-to-side motion,
be sure to work the stone up and down so
that the entire surface is evenly polished.
 Periodically spray the stone with lubricant
during this process to clear any debris from its
surface.
 Ensure the edges of the surface are free from
any burrs.

14. Clean the oil feed surface and then carefully
remove the plug (H) from the oil feed hole.

!

CAUTION

Inspect oil feed hole to ensure
there is no debris in the hole.

TSB #: 23-01-021G

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SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

15. Remove the cloth or masking tape from the oil
feed pipe and then remove the existing pipe
gasket (I).

 Install the supplied NBR 300㎛ coated gasket.

NOTICE
Before installing the supplied
gasket, clean any debris (J)
from the pipe bolt hole.

STUI
Using STUI in the GDS, take a picture of
the NEW coated gasket with last 6-digits of
VIN and date of repair on a piece of paper.
Ensure the picture is in focus and VIN with
date of repair are legible.
Upload the photo in STUI.

TSB #: 23-01-021G

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SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

16. Reinstall the removed parts in reverse order of
removal.

!

CAUTION

Make sure to check the oil feed
pipe tightening torque.
Tightening Torque:
• Feed pipe bolt (K): 9.8 ~ 11.8 Nm (7.2 ~ 8.7
lb-ft)
• Feed pipe bracket bolt (L): 9.8 ~ 11.8 Nm (7.2
~ 8.7 lb-ft)
• Eye bolt (M): 17.7 ~ 21.6 Nm (13.0 ~ 15.9 lbft)
• Engine hoist lifting bracket: 44.1~ 53.6 Nm
(32.5 ~ 39.8 lb-ft)

TURBOCHARGER OIL FEED REWORK (RH SIDE)
1.

Remove the engine and transmission assembly
according to the vehicle shop manual, if this has
not already been done for the LH side operation.
 Engine Mechanical System > Engine and
Transmission Assembly > Engine and
Transmission Assembly

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SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

2.

Disconnect the connector (A).

3.

Loosen the mounting bolt (B) and remove the
high-pressure fuel pump form.

4.

Loosen the bracket mounting bolt (C).

5.

Release the locking pin (D) and remove the
bracket.

TSB #: 23-01-021G

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SUBJECT: 3.5L T-GDI ENGINE TURBOCHARGER OIL PORT RESURFACING (SERVICE CAMPAIGN T25G)

6.

Inspect the turbo oil feed mating surface on the
RH side cylinder head for scratches. If a scratch
is found, continue to the next step. If no scratch is
found, skip Step 7 below and proceed directly to
Step 8.

7.

Perform the polishing procedure on the RH side
according to steps 5 - 15 of the
TURBOCHARGER OIL FEED REWORK (LH SIDE)
procedure.

STUI
Using STUI in the GDS, take a picture of the NEW coated gasket with last 6-digits of VIN
and date of repair on a piece of paper. See Step 15 of TURBOCHARGER OIL FEED
REWORK (LH SIDE) procedure for details.
Ensure the picture is in focus and VIN with date of repair are legible.
Upload the photo in STUI.

8.

Reinstall the removed parts in reverse order of
removal.

!

CAUTION

Make sure to check the oil feed
pipe eyebolt tightening torque.
Tightening Torque:
• Feed pipe bolt: 9.8 ~ 11.8 Nm (7.2 ~ 8.7 lb-ft)
• Feed pipe bracket bolt: 9.8 ~ 11.8 Nm (7.2 ~
8.7 lb-ft)
• Eye bolt: 17.7 ~ 21.6 Nm (13.0 ~ 15.9 lb-ft)

TSB #: 23-01-021G

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