PIP5792D

Service Bulletin Details

Public Details for: PIP5792D

This preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6l80, 6l90, 8l90, 10l80, or 10l1000 transmission has a harsh shift, shudder, stall or high transmission fluid


- 2022 - 2021 -

Bulletin No.: PIP5792D
Published date: 06/16/2022
Preliminary Information
PIP5792D 6L80 6L90 8L90 10L80 10L000 Equipped Vehicles With A
Harsh Shift Shudder Surge Stall Or High Transmission Fluid
Temperature Concern With Low Mileage
Models
Brand:
Cadillac
Model:
Escalade
Chevrolet Silverado 1500
Model
Years:
VIN:
from to
Engine:
Transmissions:
2021 2022
All
All All
2021
All
All
All Except
L3B
MQB MQE MYC
MHS MQC
Chevrolet
Silverado 1500 LTD (RPO J21, VIN Digit 5
= W / Y)
2022
All
All
All Except
L3B
MQB MQE MYC
Chevrolet
Silverado 1500 New (RPO J22, VIN Digit 5
= A / D)
2022
All
All
All Except
L3B
MHS MHT MQB MQC
MQE
Chevrolet Silverado 2500HD 3500HD
2021 2022
All
All All
MGM MGU MYD
Chevrolet Suburban
2021 2022
All
All All
MHS MQC
Chevrolet Tahoe
2021 2022
All
All All
MHS MQC
GMC
Sierra 1500
2021
All
All
All Except
L3B
MQB MQE MYC
GMC
Sierra 1500 LTD (RPO J21, VIN Digit 5 = 8 /
2022
9)
All
All
All Except
L3B
MQB MQE MYC
GMC
Sierra 1500 New (RPO J22, VIN Digit 5 = H
2022
/ U)
All
All
All Except
L3B
MHS MHT MQB MQC
MQE
GMC
Sierra 2500HD 3500HD
2021 2022
All
All All
MGM MGU MYD
GMC
Yukon
2021 2022
All
All All
MHS MQC
Involved Region or Country North America
Customers may comment on harsh shifts, shudder, surge or stall.
Condition
Cause
Correction:
Customers may also comment on above normal transmission uid temperature.
Root cause may be a twisted cooler line on low mileage vehicles.
Note: A twisted cooler line may cause DTC P27EC to set in the TCM on ETRS transmissions. (RPO MHS MQC)
Inspect for a twisted cooler line, example shown in the picture below.
In some cases in may be necessary to remove the under body panels in order to clearly see the cooler lines.
If the cooler line is twisted disconnect the cooler line from the transmission auxiliary cooler and untwist it then
reconnect the cooler line.
If no concerns are found with the rubber being misshaped check the transmission uid level following SI and add
uid if needed.
If the cooler line is misshaped the cooler line should be replaced then check the transmission uid level following
SI and add uid if needed.
Version History
Version
Modi ed
5
03/23/2021 - Created.
05/24/2021 - Added note that P27EC may set in the TCM on ETRS
transmissions.
06/04/2021 - Added that customers may also comment on above normal
transmission uid temperature.
12/03/2021 - Added the 2022 model year and excluded the LB3 engine.
06/16/2022 - Added transmission RPO codes MHS and MHT. Added 2022
new models Chevrolet Silverado and GMC Sierra. This PI will transition to a
bulletin in the 3rd quarter of 2022.
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