PIP5081J

Bulletin No.: PIP5081J
Published date: 06/6/2017
Preliminary Information
PIP5081J (EREV) Whine, Scrape, Whistle Type Noise While Driving
Models
Brand:
Model:
VIN:
Model Years:
from
Engine:
to
Transmissions:
Chevrolet
Volt
2011 - 2015
All
All
All
All
Cadillac
ELR
2014 - 2015
All
All
All
All
Opel
Ampera
2012 - 2014
All
All
All
All
Supersession Statement
This PI was superseded to update model years. Please discard PIP5081H.
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.
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
2011-2015
24259842
Drive Motor Rotor Bearing
2011-2015
24234780
Drive Motor/Generator Rotor Lube Seal
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
8466800
Drive Motor Rotor Bearing Replacement
Use Published Labor Operation Time
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.
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