Technical Service Bulletin (TSB)
Rear Axle Vibration Shudder Or Chatter
REFERENCE:

TSB: 03-006-24
GROUP: 03 - Differential and Driveline

VEHICLES
AFFECTED:

**2020 - 2025** (DT) RAM 1500 Pickup
**2020 - 2024** (DS) RAM 1500 Classic
**2020 - 2024** (DX) RAM Regular Cab Chassis
This bulletin applies to vehicles equipped with Anti-Spin Differential
Rear Axle (Sales Code DSA).

CUSTOMER
SYMPTOM:

Date:

June 29, 2024

REVISION: 03-005-21

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

Customers may experience the following:
● A chatter, shudder, or vibration from the rear axle during turns.
NOTE: This may happen more as the vehicle ages, especially if the vehicle is used extensively for
towing or hauling heavy loads. The cause of the concern may be due to degradation of the rear
axle fluid. It is very important to follow the routine maintenance schedules on these vehicles
when it comes to changing the rear axle fluid if the vehicle is used primarily for towing or
hauling heavy loads. If you experience a vehicle with the above condition, please perform the
proper maintenance procedures for the rear axle and replace the fluid first before replacing any
hardware components.
NOTE: This service bulletin is only applicable to vehicles that have no history of an axle fluid
replacement. If the vehicle usage includes police, taxi, fleet, off-road or frequent trailer towing,
regular axle fluid changes are required every 3 years or 30,000 miles (whichever comes first) per
the Maintenance Schedule in the vehicle Owner's Manual.

CAUSE:

Rear axle lube

This bulletin supersedes Technical Service Bulletin (TSB) 03-005-21, date of issue November 11, 2021,
which should be removed from your files. All revisions are highlighted with **asterisks** and include
new model years.
REPAIR SUMMARY:
This bulletin involves changing the rear axle lube to possibly address a chatter, shudder or vibration.

Z03 FSAR-TSB-4070

-2-

CLAIMS DATA:

Labor Operation No:
03-01-00-91

03-01-00-92

Failure Code

Labor Description
Fluid, Rear Axle - Drain
and Fill
(Includes Friction
Modifier)
(DS & DX)
(1 - Semi-Skilled)
Fluid, Rear Axle - Drain
and Fill
(Includes Friction
Modifier)
(DT)
(1 - Semi-Skilled)
ZZ

Skill Category
2 - Automatic
Transmission

Labor Time
0.6 Hrs.

2 - Automatic
Transmission

0.7 Hrs.

Service Action

SPARE PARTS:
NOTE: For all proper fill quantities, Refer to the detailed service procedures available in
DealerConnect> Service Library under: Service Info> 04 - Vehicle Quick Reference/Capacities
and Recommended Fluids/Specifications.
Qty
Refer to the detailed
service information for
correct capacities and
recommended fluids.
Refer to the detailed
service information for
correct capacities and
recommended fluids.
3.38oz (100 ml)

Part No.
68218657AB

Description
Notes
SAE 75W-140 (MS-8985) (3.92 Rear Axle)
- Synthetic Axle Lubricant

68340460AA

SAE 75W-90 (MS-A0160) (3.21 3.55 Rear Axle)
- Synthetic Gear Lubricant

04318060AD

Limited Slip (Friction
Modifier) Additive

Sturaco 7199 Friction
Modifier

DIAGNOSIS:
If the customer describes the symptom/condition listed above and indicated by proper maintenance records,
perform the Repair Procedure.

-3-

Z03 FSAR-TSB-4070

REPAIR PROCEDURE:
NOTE: When performing routine maintenance to the rear axle, closely inspect the rear axle hardware
components for abnormal wear or damage, and repair as necessary per normal warranty repair
guidelines.
1. Test drive vehicle by doing parking lot maneuvers, confirm a chatter or vibration noise is coming from the
rear axle while making low speed turns.
2. Raise and support the vehicle. Refer to the detailed service procedures available in DealerConnect>
Service Library under: Service Info> 04 - Vehicle Quick Reference/Hoisting/Standard Procedure.
3. Remove the differential drain plug and drain the lubricant from the axle housing.
4. Install differential drain plug with thread sealant after all the lubricant is done draining from the axle
housing. Tighten to 70 N·m (52 ft.lbs).
5. Remove the differential fill plug.
6. Fill differential with lubricant through the fill hole. Refer to the detailed service procedures available
in DealerConnect> Service Library under: Service Info> 04 - Vehicle Quick Reference/Capacities and
Recommended Fluids/Specifications.
7. Install the proper amount of friction modifier additive to the rear axle through the fill hole.
8. Install the differential fill hole bolt to the rear differential cover. Tighten to 70 N·m (52 ft.lbs).
9. Lower the vehicle.
10. Test drive the vehicle by following the same procedure as in Step 1 to confirm the noise concern has been
resolved If the noise is not resolved normal diagnosis should be performed.
POLICY:
Reimbursable within the provisions of the warranty.
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.