NHTSA ID Number: 11006326
Manufacturer Communication Number: PIP5974B
TSB/Document Date: 2024-08-13
Summary
This Preliminary information communicates possible transmission 1-2-3-4-5-6 snap rings out of round causing code p0746 or p0747.
Bulletin No.: PIP5974B
Published date: 05/24/2024
Preliminary Information
PIP5974B GF8 8T65 Or GF9 9T45/50/60/65 Transmission 1-2-3-4-56 Clutch Snap Ring Popout Causing SES / DTC Code P0746 P0747
Models
Brand:
Model:
Model Years:
VIN:
from
to
Transmissions:
Encore GX
2024
All
All
All
M3F
Enclave
2024
All
All
All
M3W
XT4
2024
All
All
All
M3H
XT5
2024
All
All
All
M3G M3W
XT6
2024
All
All
All
M3G M3W
Blazer
2024
All
All
All
M3T M3V
Trailblazer
2024
All
All
All
M3F
Traverse Limited
2024
All
All
All
M3V
Traverse
2024
All
All
All
MF8
Acadia
2024
All
All
All
MF8
Terrain
2024
All
All
All
M3U
Involved Region or
Country
Condition
North America, Japan, South Korea, Europe, Palestine, Middle East
Some Buick
, Cadillac, Chevrolet and GMC vehicles equipped with the GF8 8T65 or GF9
9T45/50/60/65 automatic transmission may experience: a SES light on with code P0746
or P0747.
This may be accompanied by no drive or slipping drive condition.
These transmissions will be built between 10/1/2023 and 4/22/2024
Julian date between 23 274 and 24 113
The transmission concern could be caused by an out of round snap rings: (594) 1-2-3-4-56 Clutch Spring Retaining Ring or (599) 1-2-3-4-5-6 Clutch Backing Plate Retaining Ring
Cause
Correction:
Check transmission Julian build date.
If the transmission is built between 10/1/2023 and 4/22/2024; Julian date between 23 274 and 24 113 and the
vehicle comes in with a code P0746 or P0747 and the code resets on a short test drive or the vehicle slips in drive,
the transmission will need to be disassembled and inspected for damage.
*NOTE: Do not replace the Control valve body assembly (Valve body) or Control valve solenoid body assembly
(Solenoid body) as these are not related to the concern.
The following parts will need to be replaced:
(590)1-Reverse and 1-2-3-4-5-6 Clutch Piston Housing
(591)1-2-3-4-5-6 Clutch Piston Inner Seal
(592)1-2-3-4-5-6 Clutch Piston
(593)1-2-3-4-5-6 Clutch Piston Return Spring
(594)1-2-3-4-5-6 Clutch Spring Retaining Ring
(595)1-2-3-4-5-6 Clutch Plate - Wave
(596)1-2-3-4-5-6 Clutch Plate
(597)1-2-3-4-5-6 Clutch Plate - Friction
(598)1-2-3-4-5-6 Clutch Backing Plate
(599)1-2-3-4-5-6 Clutch Backing Plate Retaining Ring
(600)1-2-3-4-5-6 Clutch Piston Seal
Please follow SI procedures for repairs and all other recommendations for 1 time use components (gaskets, seals
or bolts).
Note for reference if needed for extra info there is a video of the GF9 repair on Center of Learning course number
/ name:
Course 57560.01V Transmission Unit Repair: 9-Speed Clutch Replacement
Note: Engineering is still researching the concern and the info will be updated if needed.
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
8465262
Description
1-Reverse and 1-2-3-4-5-6 Clutch Piston Housing
Overhaul
Labor Time
Use published labor for
your vehicle
Version History
Version
Modi ed
3
04/29/2024 - Created on.
05/06/2024 - Updated parts in correction section.
05/24/2024 - Updated to add Acadia and Traverse with GF8 and added info
of repair video.
© 2024 General Motors. All Rights Reserved.
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TSB/Document ID: PIP5974B
Replacement Service Bulletin Number:
MFR Communication Date: 2024-08-13
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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