Bulletin No.: PIP5321H
Published date: 08/24/2018

Preliminary Information
PIP5321H Volt 5ET50 Transmission Component Restriction
Program
Models
Brand:
Chevrolet

Model:
Volt

Model Years:
2016 - 2019

VIN:
from
All

Engine:

to
All

All

Transmissions:
All

Supersession Statement
This PI was superseded to update part number and Model Year. Please discard PIP5321G.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition / Concern
This PI will explain the 5ET50 electric variable automatic transmission assembly for the
2016-2017 MY Chevrolet Volt. This program will start on August 1st, 2015 to gather
important feedback on this new transmission. This bulletin will be revised to announce the
end of the exchange program at a later date.
Product teams continually seek valuable information for engineering improvements. To
assist in this effort the restriction program will be used for this product.

Recommendations / Instructions
The 5ET50 transmission assembly and component restriction will be administered by the GM
Technical Assistance Center (TAC). The servicing technician must provide detailed customer
comments, conditions, diagnostic trouble codes (DTCs) and other useful information. To
request restricted components, dealerships are required to call Technical Assistance (TAC).
Prior to calling TAC, please read through this entire document. If diagnosis leads to
replacement of one or more of the restricted components listed below please have all SI
document numbers used during diagnosis available prior to contacting TAC.
TAC Telephone Number US 1-877-446-8227 (Action Center prompt or Hybrid prompt)
Canada 1-800-263-7740 for English or 1-800-263-7960 for French
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High
Voltage component or connection. Personal Protection Equipment (PPE) and proper
procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
• Identify how to disable high voltage.
• Identify how to test for the presence of high voltage.
• Identify condition under which high voltage is always present and personal protection
equipment (PPE) and proper procedures must be followed.
Before working on any high voltage system, be sure to wear the following Personal
Protection Equipment:
• Safety glasses with appropriate side shields when within 50 feet of the vehicle, either
indoors or outdoors.
• Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather
protectors.
• Visually and functionally inspect the gloves before use.

• Wear the Insulation gloves at all times when working with the Drive Motor Battery
assembly, whether the system is energized or not. Failure to follow the procedures exactly
as written may result in serious injury or death.
Important: If vehicle damage does not allow access to the high voltage manual disconnect,
then disconnect the 12V battery and remove the damaged portion of the vehicle until such
time as the HV manual disconnect can be removed and the High Voltage Disabling procedure
can be completed.
1. Perform the high voltage disable procedure at the drive motor generator control module
assembly or cable connections. Refer to High Voltage Disabling in SI.
2. Perform the high voltage enable procedure when the transmission is installed or
repaired and ready to be test driven.
If TAC release the Drive unit you will also need to order the parts below to install the drive
unit.
Please Check Service Information for the Lasted on parts needed for install.

PART Name listed in SI

Part #

QTY

Seal, PIM hose

23323369

1

Transmission Mount Bolt

11547918

3

Exhaust gask et

23238284

1

Stabilizer Shaft Link Nut

11609282

2

Front lower control arm ball
joint Nut

11609282

2

Transmission Mount Strut Bolt

11589275

1

Drive train and F ront
Suspension Cradle Rear

11547242

2

Drive train and F ront
Suspension Cradle F ront

11547242

4

Wave wash (If axles are
removed from Hubs)

11611964

2

Cooler line seal inlet

25874797

1

Cooler line seal outlet

23278166

1

For Return and Shipping
Please make sure that you are strapping the transmission down. Most of the transmissions
are being returned have sustained damage from shipping.
Position the strap as shown in the pictures below and tighten with the ratchet.

Parts Information
Model Year

Part Number

Description

QTY

2016-2019

24290924

Drive Unit

1

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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