NHTSA ID Number: 11007997
Manufacturer Communication Number: 24-NA-118
TSB/Document Date: 2024-09-25
Summary
This service bulletin provides information on Available Repairs for HP1 Front Electric Drive Unit.
Bulletin No.: 24-NA-118
Service Bulletin
Date: August, 2024
INFORMATION
Subject:
Information on Available Repairs for HP1 Front Electric Drive Unit
Brand:
Model:
Model Year:
Corvette ERay
VIN:
from
to
from
to
2024
2024
—
—
6.2L (LT2)
MLH
Involved Region or Country
North America, Europe, Middle East, Israel, Palestine, Japan, Thailand, Australia/New
Zealand
Additional Options (RPOs)
Hybrid
Propulsion Electric (RPO HP1)
Information
Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws
applicable to the activities it performs under this bulletin, including but not limited to handling, deploying,
preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. In the event of a
conflict between the procedures set forth in this bulletin and the laws that apply to your dealership, you
must follow those applicable laws.
Internal service of the drive unit is not recommended at the present time. However, the following externally accessible parts are available to be replaced on the front electric drive unit assembly, which may also at times be referred
to as a Transmission in various publications. If the part in question does not appear on this list, consider replacing
the full drive unit assembly.
Part Number
Description
24053527
SWITCH ASM-DRV MOT DISCONNECT
CLUTCH
24286722
COVER-A/TRNS CASE (3 bolt cover at
bottom of unit)
24286723
GASKET-A/TRNS CASE COVER (3 bolt
gasket at bottom of unit)
24286724
COVER-A/TRNS CASE (4 bolt cover at
bottom of unit)
24286725
GASKET-A/TRNS CASE COVER (4 bolt
gasket at bottom of unit)
11548404
BOLT/SCREW - A/TRNS CASE COVER
24053463
BUSHING-OUTPUT SHAFT
24295613
SCREEN ASM-A/TRNS SCAV PUMP
24287195
SEAL-TRANS FLUID FILL OVERFLOW
TUBE
24044155
SEAL ASM-FRT WHL DRIVE SHAFT OIL
24288193
WASHER-TRANS FLUID CLR
24287194
TUBE-TRANS FLUID FILL OVERFILL
24298199
SENSOR ASM-A/TRNS OUTPUT SPEED
Copyright 2024 General Motors. All Rights Reserved.
Page 2
August, 2024
24046874
CONNECTOR ASM-DRIVE MOTOR
POWER INVERTER MODULE
24052771
ACTUATOR ASM-DRV MOT
DISCONNECT CLUTCH
24283144
SENSOR ASM-A/TRNS FLUID
TEMPERATURE
Bulletin No.: 24-NA-118
Note: The high voltage battery pack assembly that powers the drive unit is currently only serviced as an assembly,
except for the dry cavity plug. No internal repairs are allowed. Do not open the enclosure.
If the drive unit must be removed from the vehicle, these are the ancillary parts needed as part of that procedure,
listed here for reference only:
Qty
Part Number
Description
2
11612295
Front Wheel Drive Shaft Nut
2
11611965
Front Wheel Drive Shaft
Washer
1
24205145
Front Wheel Drive Shaft
Retaining Ring (Left)
1
24050628
Front Wheel Drive Shaft
Retaining Ring (Right)
2
84369120
Transmission Fluid Cooler
Pipe Seal
5
11548404
Drive Motor Power Inverter
3 Phase Cable Bolt
(External connection to
RESS)
11549242
Drive Motor Power Inverter
3 Phase Cable Connector
Bolt (Internal connection to
drive unit)
3
Version
1
Modified
Released August 21, 2024
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job
properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
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TSB/Document ID: 24-NA-118
Replacement Service Bulletin Number:
MFR Communication Date: 2024-08-22
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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