Bulletin No.: PIP5785
Published date: 03/6/2021

Preliminary Information
PIP5785 Whining/Whirring, Whistle, Squeaking, Groaning/Growling Noise Coming From
The Front Wheel/Engine Area
Models
Brand:

Model:

VIN:

Model Years:

from

Engine:

to

Transmissions:

Cadillac

ATS

2017 - 2019

All

All

All

All

Cadillac

CTS

2017 - 2019

All

All

All

All

Cadillac

CT6

2016 - 2020

All

All

All

All

Involved Region or
Country

North America

Additional Options
(RPO)

F46
Some customers may comment on one or more of the following conditions at low speeds during driving maneuvers up to
40 mph:

Condition

Whining/Whirring
Whistle
Squeaking
Groaning/Growling
The customer might state this noise coming from the engine/wheel area

Cause

This condition may be caused by fretting between the Front Intermediate Shaft(IDS Shaft) and the Front Intermediate Shaft
Bearing/Housing(IDS bearing). The fretting is the result of having a slip t interface between the bearing and the IDS shaft,
and combined with a bearing that has around 0.5Nm of torque to rotate(TTR)

Correction:
Perform road test to diagnose fretting noise:
1. Try and replicate the customers complaint maneuver (generally the noise is heard while coasting and without brakes being applied)
2. Install Chassis Ears
3. Identify if the noise is at the Front Intermediate Shaft Housing
4. Once the noise is con rmed and isolated at the front intermediate shaft housing
5. Replace IDS Shaft and IDS Shaft Housing, refer to Front Wheel Drive Intermediate Shaft Replacement & Front Wheel Drive Intermediate Shaft
Housing Replacement in Si.

Parts Information
Caution: This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this
component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or components.
Note: If the bolts or nuts are found to be damaged or are excessively worn, DO NOT reuse. Replace with new.
Note: If reusing the propeller shaft bolts, to ensure proper adhesion and fastener retention, the threads must be free of debris prior to the application of
thread locker. Use an appropriate cleaner to thoroughly clean the threads and allow to dry. Apply thread locker to the propeller shaft to ange bolts.
Ensure that there are no gaps in the thread locker along the length of the lled area of the bolts. Allow the thread locker to cure approximately 10
minutes before installation.
Description

Vehicle Application

Part Number

Quantity

Front Intermediate Shaft IDS Shaft
Front Intermediate Shaft IDS Shaft
IDS Bearing Housing
IDS Bearing Housing
IDS Bearing Housing
IDS Bearing Housing

ATS/CTS
CT6
ATS/CTS 2.0 (LTG)
ATS/CTS 3.6 (LGX)
CT6 3.0 (LGW) or 3.6 (LGX)
CT6 4.2 (LTA)

22772313
23269757
84098259
84098258
84056149
84266221

1
1
1
1
1
1

Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate
Vehicle History (IVH) for coverage information.
Labor Operation

Description

Labor Time
Diagnostic Test and drive

3087188

If replacing Shaft and Bearing Housing

Version History
Version
Modi ed

1
2/16/2021 - Created

.5 hr
ATS Add 6.9 hr
CTS Add 7.0 hr
CT6 Add 5.7 hr

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