NHTSA ID Number: 11033836
Manufacturer Communication Number: 26-SS-001H TSB
TSB/Document Date: 2026-06-16
Summary
Certain Palisade (LX2) vehicles may exhibit a clunking or thumping noise from the rear of the vehicle while driving over rough roads. This may be caused by worn self-leveling rear shock absorbers. Hyundai
is extending the warranty coverage for the self-leveling rear shock absorbers to 10 years/120,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners. Follow the procedure in the bulletin to identify the source of the noise, and if necessary, replace one or both self-leveling rear shock absorbers. Please note that for the first repair, replacement of both rear shock absorbers will be covered by this warranty extension. For subsequent repairs, one or both rear shock absorbers will be covered depending upon the impacted side(s).
GROUP
NUMBER
SUSPENSION
Technical Service Bulletin
SUBJECT:
DATE
26-SS-001H
MODEL(S)
MAY 2026
PALISADE (LX2)
SELF-LEVELING REAR SHOCK ABSORBER CLUNKING/THUMPING
NOISE ON ROUGH ROADS (WARRANTY EXTENSION Z12)
This TSB supersedes 25-SS-004H to add 2023-2024MY vehicles, and to update the TSB to
include first time repair and subsequent repairs under this warranty extension.
Description: Certain Palisade (LX2) vehicles may exhibit a clunking or thumping noise from the rear
of the vehicle while driving over rough roads. This may be caused by worn self-leveling rear shock
absorbers.
Hyundai is extending the warranty coverage for the self-leveling rear shock absorbers to
10 years/120,000 miles from the date of original retail delivery or date of first use (whichever occurs
first) and is valid for original and subsequent owners.
Follow the procedure in the bulletin to identify the source of the noise, and if necessary, replace one or
both self-leveling rear shock absorbers.
Please note that for the first repair, replacement of both rear shock absorbers will be covered by this
warranty extension. For subsequent repairs, one or both rear shock absorbers will be covered
depending upon the impacted side(s).
i
Information
Any vehicles under 10 years/120,000 miles are covered by this TSB, even if vehicle is within
original warranty of 5 years/60,000 miles.
Applicable Vehicles (Certain):
Model Year
Model
Production Dates
2020 – 2024
Palisade (LX2)
04/10/2019 – 08/29/2023
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
SUBJECT:
SELF-LEVELING REAR SHOCK ABSORBER CLUNKING/THUMPING NOISE
ON ROUGH ROADS (WARRANTY EXTENSION Z12)
Parts Information:
Model
Model Year
Kit Name
Kit Number
Kit Figure
Part Name
Qty
Self Levelizer Rear
Shock-Absorber
55365S9300QQH
2020-2022
Insulator
Self-Locking Nut
Self Levelizer Rear
Shock-Absorber
First
Repair:
2023-2024
(FWD)
Shock
Absorber
w/Insulator Kit
55365S8BB1QQH
Insulator
Self-Locking Nut
1 Kit
consists
of 2 each:
Shock
Absorber,
Insulator,
& Nut
Self Levelizer Rear
Shock-Absorber
Palisade
(LX2)
2023-2024
(AWD)
55365S8BD1QQH
Insulator
Self-Locking Nut
55364S9300QQH
2020-2022
Subsequent
Repair:
2023-2024
(FWD)
2023-2024
(AWD)
Shock
Absorber
Kit
55364S8BB1QQH
55364S8BD1QQH
Self Levelizer Rear
Shock-Absorber
Self-Locking Nut
Self Levelizer Rear
Shock-Absorber
Self-Locking Nut
Self Levelizer Rear
Shock-Absorber
1 Kit
consists
of 1 each:
Shock
Absorber
& Nut
Self-Locking Nut
NOTE 1: Order the correct kit based on if this is the vehicle’s first or subsequent repair under this
warranty extension.
NOTE 2: Lock nut MUST be replaced with shock absorber replacement.
NOTE 3: Reuse the insulator on subsequent repairs.
i
Information
First Repair: Replace the shock absorbers on both sides.
Subsequent Repair: Replace ONLY the shock absorber on the side(s) exhibiting noise.
TSB #: 26-SS-001H
Page 2 of 10
SUBJECT:
SELF-LEVELING REAR SHOCK ABSORBER CLUNKING/THUMPING NOISE
ON ROUGH ROADS (WARRANTY EXTENSION Z12)
SST Information:
Tool Name
Shock
Absorber
Lock Nut
Removal Tool
Kit
Tool Number
09546-S1100
TSB #: 26-SS-001H
Figure
Remarks
Ordering Information
Use for
installing
new
lock nut
Website:
https://hyundaiessentialtools.com/
Email:
[email protected]
Phone: 1-855-763-9199
Hours: 7 AM – 7 PM CST
Page 3 of 10
SUBJECT:
SELF-LEVELING REAR SHOCK ABSORBER CLUNKING/THUMPING NOISE
ON ROUGH ROADS (WARRANTY EXTENSION Z12)
Warranty Information:
Model
Model Year
Op. Code
2020–2022 50D315R1
2023–2024
50D315R2
(FWD)
2023-2024
(AWD)
50D315R3
2020–2022 50D315R4
Palisade 2023–2024
50D315R5
(LX2)
(FWD)
2023-2024
(AWD)
50D315R6
Operation
Check for Noise from
Rear Suspension,
Visual Inspection of
Rear Suspension
Components, and
Replacement of Both
Shock Absorbers and
Insulators
(1st Repair)
Check for Noise from
Rear Suspension,
Visual Inspection of
Rear Suspension
Components, and
Replacement of LH or
RH shock absorber
(2nd or later Repair)
Check for Noise from
Rear Suspension,
Visual Inspection of
2023–2024
Rear Suspension
50D315R8
(FWD)
Components, and
Replacement of BOTH
Shock Absorbers
2023-2024
50D315R9 (2nd or later Repair)
(AWD)
Op.
Time
Causal Part
Nature Cause
Code Code
55367-S9300
1.2
M/H
55367-S8BB0
55367-S8BD0
55367-S9300
1.0
M/H
55367-S8BB0
B1D
ZZ7
55367-S8BD0
2020–2022 50D315R7
55367-S9300
1.2
M/H
55367-S8BB0
55367-S8BD0
NOTE 1: If the affected parts are within the warranty period of 10 years or 120,000 miles, then submit
as a campaign claim type. Please note that any vehicles under 10 years/120,000 miles are covered by
this TSB even if vehicle is within original warranty of 5 years/60,000 miles.
NOTE 2: This TSB includes repair justification photos. Op times include VIN, mileage, and repair
justification photos as outlined in the Digital Documentation Policy.
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 the part is not returned.
NOTE 4: If any part(s) not subject to this TSB are found in need of replacement while performing the
repair procedure, and the affected part(s) are still under warranty, the dealer may submit a separate
claim using the same repair order. If the part(s) not subject to this TSB are out of warranty coverage,
the dealer has the option to submit a PA Request for goodwill consideration on a case-by-case basis.
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TSB/Document ID: 26-SS-001H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-06-11
MFR Internal Campaign ID/Software Version: Z12
Communication Type: Warranty Program/Extension
NHTSA Components: SUSPENSION
MFR Component System:
MFR Component Subsystem:
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