NHTSA ID Number: 11014044
Manufacturer Communication Number: PIP5175F
TSB/Document Date: 2025-02-10
Summary
This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears. This may be due to loose stator support to pump cover bolts causing a leak at the stator support to pump cover gasket. Technician will check for the bolts to be loose. If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump cover must be replaced and the 1234 clutch plates should be inspected for being distressed and repaired as needed.
Bulletin No.: PIP5175F
Published date: 02/3/2025
Preliminary Information
PIP5175F Slip Or Shudder During A Launch In First Second Third Or
Fourth Gears Delayed Engagement Into Drive Clunk Or Bump During
The 1-2 Shift
Models
Brand:
Model:
Model VIN:
Engine:
Years: from to
2013 All
2020
All All
Chevrolet
Avalanche
2013
All
All All
Chevrolet Caprice PPV
2013 All
2017
All All
Chevrolet Cheyenne/Silverado
2013 All
2021
All All
2019 All
2022
All All
2019 All
2021
All All
2019 All
2021
All All
2019 All
2021
All All
Chevrolet Colorado
2014 All
2022
All All
Chevrolet SS
2014 All
2017
All All
Chevrolet Suburban
2013 All
2020
All All
Chevrolet Tahoe
2013 All
2020
All All
Canyon
2015 All
2022
All All
Sierra
2013 All
2021
All All
Sierra 2WD Limited RPO J21, 2019 All
VIN Digit 5 = 8)
2021
All All
Escalade
Cheyenne/Silverado 2wd
Chevrolet LTD (RPO J21, VIN Digit 5 =
W)
Cheyenne/Silverado 2WD
Chevrolet New (RPO J22, VIN Digit 5 =
A)
Cheyenne/Silverado 4WD
Chevrolet LTD (RPO J21, VIN Digit 5 =
Y
Cheyenne/Silverado 4WD
Chevrolet New (RPO J22, VIN Digit 5 =
D)
Transmissions:
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
MYB 6L50 Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
MYB 6L50 Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
Brand:
Model:
Model VIN:
Engine:
Years: from to
Sierra 2WD New (RPO J22,
VIN Digit 5 = H)
2019 All
2021
All All
Sierra 4WD Limited (RPO
J21, VIN Digit 5 = 9)
2019 All
2021
All All
Sierra 4WD New (RPO J22,
VIN Digit 5 = U)
2019 All
2021
All All
Yukon Models
2013 All
2020
All All
Transmissions:
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
6L80 MYC Automatic
Transmission Built in the
Silao Mexico Plant 2
Note: Please refer to SI document 2610129. The following information only applies to
transmissions with a source code (item number 7 in document 2610129) of (2).
Supersession Statement:
This PI was superseded to add the MYB 6L60 and model years & include Julain Date
picture. Please discard PIP5175E.
Condition / Concern
Customers may comment on a delayed engagement into drive, shudder at a launch, or
the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears.
The customer may also comment that they feel a bump or hear a clunk noise during a 1-2
shift.
These concerns may only be present when the transmission is at operating temperature.
Recommendations / Instructions
These concerns may be due to loose stator support to pump cover bolts causing a leak at
the stator support to pump cover gasket.
If the root cause cannot be found following normal SI diagnostics, remove the transmission
fluid pan and the transmission control assemblies.
Referring to the picture below and wearing proper eye protection apply compressed air to
the 1-2-3-4 clutch apply passage and inspect for air leaking out of the compensator feed
passage in the pump cover.
If no leakage is found out of the compensator feed passage listen for excessive air leakage
inside the transmission.
Callout 1
Component Name: Applying compressed air to the 1234 clutch passage.
Callout 2
Component Name: Compensator feed passage.
You may also notice fluid leaking or see a misaligned gasket by looking up through the
case opening between the pump stator support and the 1234/35R clutch housing during
this test as shown below.
Callout 2
Component Name: Gap between the pump cover and the 1234/35R clutch housing.
If excessive air leakage is found inspect the transmission fluid pump for loose stator
support to pump cover bolts or a misaligned stator support to pump cover gasket.
Note: The bolts should never be checked for being loose by using a hand tool. The bolts
are supposed to be torqued at the factory and never loosened. The recommended
procedure to check for loose bolts is to use your fingers or just a socket and your fingers
and attempt to rotate the bolts in a counter clockwise direction. If the bolts are loose for
any reason the pump cover must be replaced.
Refer to the picture below.
Callout 1
Component Name: Misaligned Gasket
Callout 2
Component Name: Stator Support Bolts
If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump
cover must be replaced and the 1234 clutch plates should be inspected for being
distressed and repaired as needed.
Note: The transmission adapts must be reset if the pump cover is replaced to address this
concern.
This PI will update to a bulletin in the future
Parts Information
Part Number
Description
QTY
24248573
COVER KIT,A/TRNS FLUID PUMP
1
24224147
PLATE ASM-1-2-3-4 CLU
6
24258080
PLATE,1-2-3-4 CLU(STEEL)
5
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
Description
Labor Time
8465050 (Use if no
concerns are found with
Oil Pump Replacement
Use Published Labor Operation
Time
the stator support bolts or
cover).
8466410 (Use if the stator
support bolts are loose or
the gasket is misaligned)
1-2-3-4 Clutch Plate
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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TSB/Document ID: PIP5175F
Replacement Service Bulletin Number:
MFR Communication Date: 2025-02-03
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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