DRIVESHAFT AND
AXLE

23-DS-004G-1

OCTOBER 2023

GV70 (JK1)
GV80 (JX1)
G80 (RG3)

REAR DIFFERENTIAL NOISE INSPECTION AND REPAIR
This TSB supersedes 23-DS-004G to update the rear propeller shaft bolt (to differential) part
number from 49319-T6100 to 49319-T6000.
Description: Certain GV70 (JK1 and JK1A), GV80 (JX1) and G80 (RG3) vehicles may have a noise
condition from the rear differential at certain speeds while accelerating or decelerating. This bulletin
describes the procedure to inspect the vehicle for noise and if necessary to tighten the lock nut or if
necessary replace the differential.

Applicable Vehicles:
• GV70 (JK1, VIN starts with "KMU") 2022MY ~
• GV70 (JK1A, VIN starts with "5NM") 2024MY ~
• GV80 (JX1) 2021MY ~
• G80 (RG3) 2021MY ~

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

Table of Contents
Parts Information: .............................................................................................. 2
Warranty Information: ........................................................................................ 4
Service Procedure: ............................................................................................. 5
Repair Flow Chart ........................................................................................... 5
Rear Differential Noise Inspection ................................................................ 6
Rear Differential Lock Nut Tightening........................................................... 6
Rear Differential Replacement ..................................................................... 14
Parts Information:
“JK1” refers to both JK1 (Korean) and JK1A (USA).

JK1
JX1
RG3

28751-3J000

JK1
JX1

28751-2S000

RG3

28751-3S100

JK1
JX1

49319-T6100

RG3

49319-3M000

JK1
JX1
RG3

49329-3M000

Front & Center
Muffler Gasket

2.5T: 1 each
3.5T: 2 each

Rear & Center
Muffler Gasket

2 each
2.5T and 3.5T
2 each

Rear Propeller Shaft Bolts
(to transfer case)

3 each

Rear Propeller Shaft Nuts
(to transfer case)

3 each
2.5T and 3.5T

JK1
JX1

49319-T6000

RG3

49319-T1000

Rear Propeller Shaft Bolts
(to differential)

3 each

Order the following parts only if differential replacement is necessary.

JK1

53000-47520

2.5T, AWD

53000-4J510

3.5T, AWD

53000-4J520

3.5T, AWD,
w/ & w/out E-LSD

53000-4J600
JX1

Rear Differential Carrier

2.5T, RWD & AWD

53000-4J620

2.5T, AWD, E-LSD

53000-4J610

3.5T, AWD

53000-4J630

3.5T, AWD, E-LSD

TSB #: 23-DS-004G-1

1 each

Page 2 of 17
SUBJECT:

53000-47501
RG3

53000-47502

2.5T, RWD
Rear Differential Carrier

53000-4J500
JK1
JX1
RG3

28751-3J000

JK1
JX1

28751-2S000

RG3

28751-3S100

JK1
JX1

49319-T6100

RG3

49319-3M000

JK1
JX1
RG3

49329-3M000

JK1
JX1

49319-T6000

RG3

49319-T1000

JK1

3.5T, RWD & AWD
Front & Center
Muffler Gasket
Rear & Center
Muffler Gasket

2.5T: 1 each
3.5T: 2 each
2 each
2.5T and 3.5T
2 each

Rear Propeller Shaft Bolts
(to transfer case)

3 each

Rear Propeller Shaft Nuts
(to transfer case)

3 each

Rear Propeller Shaft Bolts
(to differential)

3 each

49557-3M000

2.5T, w/out E-LSD

49557-2G000

3.5T, w/out E-LSD

49557-T6000

3.5T w/ E-LSD

JX1

Axle Clip

2.5T and 3.5T
w/out E-LSD

49557-T6000

2.5T and 3.5T
w/ E-LSD

49557-3M000

2.5T

49557-2G000

3.5T

JK1
JX1
RG3

49551-4T000

Axle Castle Lock Nut

JK1
JX1

00232-19075

Gear Oil, 75W-85, GL-5,
LSD*, 1.0qt

00232-19097

Gear Oil, 75W-85, GL-5,
Non LSD, 1.0qt

RG3

1 each

2.5T and 3.5T

49557-2G000

RG3

2.5T, RWD

2 each

2.5T and 3.5T

2 each

2.5T and 3.5T

2 each

*NOTE: LSD gear oil designates the specification, not if the vehicle is equipped with an E-LSD.

TSB #: 23-DS-004G-1

Page 3 of 17
SUBJECT:

Warranty Information:

GV70 (JK1
and JK1A)
GV80 (JX1)
G80 (RG3)

GV70 (JK1
and JK1A)
GV80 (JX1)
G80 (RG3)

GV70 (JK1
and JK1A)
GV80 (JX1)

GV70 (JK1
and JK1A)
GV80 (JX1)
G80 (RG3)

GV70 (JK1
and JK1A)
GV80 (JX1)

53000F08

REAR DIFFERENTIAL CARRIER
NOISE INSPECTION

0.4 M/H

53000F09

REAR DIFFERENTIAL CARRIER
NOISE INSPECTION, LOCK NUT
TIGHTENING, AND NOISE
REINSPECTION

1.9 M/H

53000F10

REAR DIFFERENTIAL CARRIER
NOISE INSPECTION, LOCK NUT
TIGHTENING (WHEN
OVERTIGHTENED),
REPLACEMENT (WITHOUT ELSD), AND ALIGNMENT

4.7 M/H

53000F11

REAR DIFFERENTIAL CARRIER
NOISE INSPECTION, LOCK NUT
TIGHTENING (WHEN
OVERTIGHTENED),
REPLACEMENT (WITH E-LSD)
AND ALIGNMENT

4.8 M/H

53000F12

REAR DIFFERENTIAL CARRIER
NOISE INSPECTION, LOCK NUT
TIGHTENING, NOISE
REINSPECTION, REPLACEMENT
(WITHOUT E-LSD), AND
ALIGNMENT

6.1 M/H

53000F13

REAR DIFFERENTIAL CARRIER
NOISE INSPECTION, LOCK NUT
TIGHTENING, NOISE
REINSPECTION, REPLACEMENT
(WITH E-LSD), AND ALIGNMENT

6.2 M/H

53000*

Q26

ZZ1

NOTE 1: Normal warranty applies.
NOTE 2: Submit claim on Claim Entry Screen as “Warranty” type.
NOTE 3: This TSB includes Repair validation photos. Op times include VIN, Mileage, and Repair
validation photos as outlined in the Digital Documentation Policy
NOTE 4: The incident parts are subject to callback through the normal Warranty Technical Center
(WTC) parts return process. Claim is subject to debit if the part is not returned.
NOTE 5: * Refer to applicable parts catalog for full causal part numbers.

TSB #: 23-DS-004G-1

Page 4 of 17
SUBJECT:

Service Procedure:

STUI
This TSB includes Repair validation photos. Refer to the latest Digital Documentation Policy for
requirements.

Repair Flow Chart

i

Information

In the following procedures, “JK1” refers to both JK1 (Korean) and JK1A (USA).

TSB #: 23-DS-004G-1

Page 5 of 17
SUBJECT:

Rear Differential Noise Inspection
1.

Drive the vehicle to inspect the vehicle for the
rear differential noise.
•

JK1: Whine noise while gradually
accelerating, in the speed range of 37 to
70mph (approx. 60 to 110 kph)
JX1 and RG3: Whine noise while coasting,
off throttle, in the speed range of 50 to 25mph
(approx. 80 to 40 kph)

•

i

Information

The noise does not have to occur during the
entire speed range.
If the noise is not heard, the service procedure is
now complete.
If the noise as described above is heard,
continue to the Rear Differential Lock Nut
Tightening procedure below.
If other noises are heard, continue to diagnose,
and repair the vehicle as necessary.
Rear Differential Lock Nut Tightening
1.

Using a lift, slightly raise the vehicle until the tires
are no longer touching the ground.
Within 3 minutes of turning off the vehicle’s
engine, place the transmission into neutral by
pressing the button (B) under the cap cover (A)
on the center console.
a) Remove the cap-cover.
b) Press the button while depressing the
brake pedal until the transmission shifts
into neutral. The button must be pressed
within 3 minutes after the engine is turned
off.

i

A

B

Information