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NHTSA ID Number: 10154282
Manufacturer Communication Number: PIP5081L
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
11 Affected Products
Vehicles
Condition / Concern
Whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking.
This noise emanating from the left side of the drive unit (transmission).
Vehicle has a current or history code P0A46.
Parts
| Model Year | Description | Part Number |
| 2011-2013 | Drive Motor Rotor Bearing | 24259842  |
| 2011-2013 | Drive Motor Generator Rotor Lube Seal | 24234780 |
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081L
Published date: 02/8/2019
MC-10154282-9999.pdf 910.943KB
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NHTSA ID Number: 10129859
Manufacturer Communication Number: PIP5081K
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081K
Published date: 02/5/2018
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NHTSA ID Number: 10118243
Manufacturer Communication Number: PIP5081J
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081J
Published date: 06/6/2017
MC-10118243-9999.pdf 213.132KB
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NHTSA ID Number: 10114497
Manufacturer Communication Number: PIP5081G
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081G
Date: Apr-2015
MC-10114497-9999.pdf 347.434KB
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NHTSA ID Number: 10114472
Manufacturer Communication Number: PIP5081F
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081F
Date: Apr-2015
MC-10114472-9999.pdf 347.401KB
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NHTSA ID Number: 10139354
Manufacturer Communication Number: PIP5081E
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081E
Date: Mar-2015
MC-10139354-9999.pdf 346.771KB
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NHTSA ID Number: 10112308
Manufacturer Communication Number: PIP5081D
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081D
Date: Dec-2013
MC-10112308-9999.pdf 345.597KB
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NHTSA ID Number: 10063158
Manufacturer Communication Number: PIP5081D
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
1 Associated Document
Service Bulletin Document
Bulletin No.: PIP5081D
Date: December, 2013
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NHTSA ID Number: 10112365
Manufacturer Communication Number: PIP5081C
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081C
Date: Nov-2013
MC-10112365-9999.pdf 346.247KB
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NHTSA ID Number: 10113107
Manufacturer Communication Number: PIP5081B
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor rotor bearing cage separated. Technician should replace the bearing with the new updated part number.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081B
Date: May-2013
MC-10113107-9999.pdf 344.465KB
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NHTSA ID Number: 10063159
Manufacturer Communication Number: PIP5081B
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
1 Associated Document
Service Bulletin Document
Bulletin No.: PIP5081B
Date: May, 2013
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NHTSA ID Number: 10112983
Manufacturer Communication Number: PIP5081A
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The tech may also state that the vehicle has a current or history diagnostic trouble code P0A46. The noise may be caused by the drive motor B rotor bearing cage separated. Technician should replace the bearing with the new updated part number. Technician should also inspect the end cover for any abnormal bushing wear, if found the side cover will also require replacement.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081A
Date: Apr-2013
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NHTSA ID Number: 10063160
Manufacturer Communication Number: PIP5081A
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
1 Associated Document
Service Bulletin Document
Bulletin No.: PIP5081A
Date: April, 2013
SB-10063160-2273.pdf 222.971KB
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NHTSA ID Number: 10112696
Manufacturer Communication Number: PIP5081
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking. Technician may find this noise emanating from the left side of the drive unit. The noise may be caused by the drive motor B rotor bearing cage separated. Technician should replace the bearing with the new updated part number. Technician should also inspect the end cover for any abnormal bushing wear, if found the side cover will also require replacement.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5081
Date: Dec-2012
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- Backward compatible with previous Dexron automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous Dexron fluids
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- Backward compatible with previous DEXRON automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous DEXRON fluids
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- Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
- ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- Backward compatible with previous DEXRON automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous DEXRON fluids
- Improved performance over previous DEXRON fluids in: friction durability, viscosity stability, aeration and foam control, and oxidation resistance
- Potential to enable improved fuel economy and longer transmission life
- Provides for extended drain intervals
- Backward compatible with previous Dexron automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous Dexron fluids
- Improved performance over previous Dexron fluids in: friction durability, viscosity stability, aeration and foam control, and oxidation resistance
- Potential to enable improved fuel economy and longer transmission life
- Provides for extended drain intervals
- Enhanced friction durability for smooth transmission performance
- Superior high temperature protection to effectively resist oxidation
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- Broad scope of vehicle applications improves workshop efficiency and inventory management
- Premium synthetic blend formula exceeds DEXRON-III H requirements
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- Certified and approved by General Motors for all cars and trucks that require DEXRON -VI
- Also satisfied requirements of DEXRON, DEXRON-III H, III, IIE and II
Last update on 2025-04-17 / Affiliate links / Images from Amazon Product Advertising API
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SEOCONTENT-START
Bulletin No.: PIP5081L
Published date: 02/8/2019
Preliminary Information
PIP5081L (EREV) Whine, Scrape, Whistle Type Noise While Driving,
P0A46
Models
Brand: Model: Model Years:
VIN:
Engine: Transmissions:
from to
Chevrolet Volt 2011 – 2015 All All All All
Cadillac ELR 2014 – 2016 All All All All
Opel Ampera 2012 – 2014 All All All All
Supersession Statement
This PI was superseded update model year for the ELR and add P0A46 to the title, Please discard PIP5081K.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
Some customers may comment on a whistle, scrape or whine type noise while driving that may be more noticeable during regenerative braking.
Technicians may find this noise emanating from the left side of the drive unit (transmission).
The tech may also state that the vehicle has a current or history code P0A46.
Recommendations / Instructions
This noise may be caused by a separated electric drive motor B rotor bearing cage. A revised bearing has been released for installation into the drive unit.
It is not necessary to remove the drive unit or motor for this repair. Follow SI (Document ID 2838728) on vehicle service, drive motor rotor bearing replacement procedure.
During repairs inspect the end cover for any abnormal bushing wear, if found the side cover will also require replacement, however if no abnormal wear is found the cover can be reinstalled.
Important: Please ensure that the Special Tools DT-47865 – Bearing Remover and J-45124 – Removal Bridge are used to remove bearing. If proper tools are not used the rotor may be damaged leading to a repeat repair. DO NOT TRY TO PRY OUT.
Important: To install bearing use Special Tools DT-22928-B Seal Installer per SI, as damage may occur if the proper tools are not utilized. Proper bearing orientation is the writing up or visible to technician.
Please also order and replace the rotor shaft seal this could be damage during bearing removal or installation
The side cover must be inspected in the bearing seating area as well as the bushing and resolver area.
THE SIDE COVER AND THE TRANSMISSION COOLER MUST BE FLUSHED TO PREVENT RECONTAMINATION OF THE NEW BEARING.
If the side cover or bushing are found to be damaged replace side cover.
If any debris is on the rotor or side of transmission this should be cleaned/flushed with transmission still in vehicle.
The transmission cooler also must be flushed.
Note: Please make sure you summit the Flush warranty code with the Labor operation
To do this the cooler thermostatic bypass must be removed.
Place failed bearing in a plastic bag as it may be requested back for analysis.
If this vehicle was previously repaired with the new bearing and the noise returned, contact TAC for diagnosis and repair instructions.
Parts Information
Model Year Part Number Description
2011-2016 24259842 Drive Motor Rotor Bearing
2011-2016 24234780 Drive Motor/Generator Rotor Lube Seal
Warranty Information
For vehicles repaired under the EV coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
Labor
Operation Description Labor Time
8466800 Drive Motor Rotor Bearing Replacement Use Published Labor Operation Time
Please make sure you have the warranty flush code (depend ency code) when using this Labor Operation Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.
SEOCONTENT-END
Tomgallagher92@ymail.com
Local Chevy shop said 1600$ to fix