Service Update
N192217820 Torque Converter Shudder/Shake
Release Date:
Attention:

August 2019

Revision:

00

This service update involves vehicles in dealer inventory only and will expire August 31, 2020.

Make
Cadillac
Cadillac
Cadillac
Cadillac
Cadillac
Chevrolet
GMC

Model
ATS
CT6
CTS
Escalade
Escalade ESV
Colorado
Canyon

Model Year
From
To
2016
2019
2016
2018
2016
2019
2015
2017
2015
2017
2017
2019
2018
2019

RPO
M5N
M5U
M5T
M5X
or
MQE

Description
8-Speed Transmission

This service update should be performed on vehicles in dealer inventory only. Involved vehicles are marked “open” on
the Investigate Vehicle History screen in GM Global Warranty Management system. This site should always be checked
to confirm vehicle involvement prior to beginning any required inspections and/or repairs.
Condition
Correction

The current transmission fluid may cause the customer to experience a shake or shudder feeling, which
may be described as driving over rumble strips or rough pavement.
Dealers are to drain the old transmission fluid and refill with the new fluid.

Parts
Note: Only select the parts that coincide with the repair performed. Caution: Choose one of the applicable part numbers
below that are required when performing the oil/fluid change. Do NOT use any other oil/fluid for this repair.
Quantity
20 - (All Models Except CT6)
24 - (CT6 Only)
1
2
1

Part Name
Mobil 1 Synthetic LV ATF HP
(Available only through Local GM Oil
Distributors)
Retainer, Trans Fluid Fluid Clr Pipe Ftg
Seal, Trans Fluid Clr Pipe

Part No.
19417577 (US - 1 quart)
19418066 (CAN - 0.946L/1 quart)
19417904 Drum 55 Gallon (US Only)
24205103
23135703

For Export: Middle East market will use oil part number 19418411 and the oil can be ordered through MEDC.
Reminder: Parts may be removed from Retail Inventory Management (RIM). Dealers should review the affected parts
to confirm RIM managed status. Parts may have quantity limiters in effect.
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
9104582

Description
Transmission Fluid Exchange
ADD: CT6 AWD Triple Drain and Fill
ADD: CT6 RWD Triple Drain and Fill
ADD: DT-45096 Prep (Not required unless the fluid is not Mobil 1
Synthetic LV ATF HP)

Labor
Time
1.1
1.0
1.6
0.1

Trans.
Type
ZFAT

Net
Item
N/A

Special Kit
DT-52263 Transmission Fluid Exchange Kit:
•
•
•
•

DT-52263-1 Block Assembly (includes fluid drain hose, spring clamp)
DT-52263-2 Cooler Line Plug (qty 3) (use with rear differential cooler)
DT-52263-4 3/8” Hose Adapter (6” long with 2 hose clamps)
DT-52263-5 Radiator Cooler Drain Adapter

Copyright 2019 General Motors. All Rights Reserved.

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Service Update
N192217820 Torque Converter Shudder/Shake

3763203
•

DT-51190 Transmission Oil Fill Adapter

•

GE-47716-2 Graduated Bucket

•

1215917
DT-45096 TransFlow Cooler Flush Machine

5181938

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Service Update
N192217820 Torque Converter Shudder/Shake

•

4733125
DT-45096-31 TransFlow Adapter (one of two pieces from DT-45096-30)

Service Procedure
Initial TransFlow Flush Machine Setup
Important: The prepping procedure only needs to be completed if the DT-45096 supply reservoir has DEXRON VI fluid
in it and has not been converted to use the new blue label Mobil 1 Synthetic LV ATF HP fluid.
Note: The prepping procedure only needs to be completed if HP fluid is not in the supply reservoir.
1.

Connect the TransFlow adapter DT-45096-31 to the supply line of the DT-45096 TransFlow machine.

5180884
2.

Switch the DT-45096 TransFlow to Idle.

3.

Connect power leads to the vehicle 12-volt DC supply.

4.

Turn the TransFlow main switch ON.

5.

Connect air supply to the DT-45096.

6.

Place the TransFlow supply hose with adapter DT-45096-31 into a waste reservoir using care not to spill the expelled
fluid.

7.

Switch the DT-45096 TransFlow to Flow and allow all the fluid in the supply reservoir to be removed and placed in
the waste reservoir.
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Service Update
N192217820 Torque Converter Shudder/Shake
8.

Switch the control switch back to idle.

Fluid Exchange Procedure - Colorado, Canyon, Escalade Models with an Accessible Transmission Oil Cooler
Line Block Assembly
Important: This procedure must be followed as published. The exchange process is required to obtain proper level of
new blue label Mobil 1 Synthetic LV ATF HP fluid. Intermixing of other types of transmission fluid or aftermarket additive
packages will result in a low concentration level of new fluid and will not provide satisfactory results.
1.

Fill the DT-45096 with 20 quarts of HP fluid.

2.

Raise the vehicle.

5182541
3.

Install the DT-45096-31 TransFlow adapter (1) to the DT-51190 fluid fill adapter (2).

4.

Remove the transmission oil cooler pipe assembly from the transmission.

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Service Update
N192217820 Torque Converter Shudder/Shake

5180563
5.

Install the DT-52263-1 Adapter Block Assembly (1), reusing the seal from the transmission oil cooler pipe assembly.

6.

Tighten the bolt (2) to 22 Nm (16 lb ft).

7.

Place the hose (3) in the GE-47716-2 Graduated Measuring Bucket, utilizing a Spring Clamp to retain the hose.

8.

Remove the level set plug (1) from the transmission.

Important: DO NOT over tighten the DT-51190 as it can be damaged by excessive torque. DO NOT exceed 9 Nm (80 lb
in).

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Service Update
N192217820 Torque Converter Shudder/Shake

3723844
9.

Install the DT-51190/DT-45096-31 assembly and hand tighten as shown in the graphic above.

3723839
10. Connect the TransFlow fluid feed (supply) line (3) to the DT-45096-31 adapter (2).
11. Lower the vehicle.
Caution: DO NOT REMOVE MORE THAN 3 QTS OF FLUID AS IT COULD CAUSE FLUID PUMP CAVITATION AND
POSSIBLY DAMAGE THE TRANSMISSION.
12. Utilizing the graduated bucket, start the engine and run 30 - 45 seconds until 3 quarts of fluid is expelled.
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Service Update
N192217820 Torque Converter Shudder/Shake
13. Shut the engine off immediately.
14. Connect the DT-45096 to the vehicle battery 12 volts and connect shop air to the air connection.
15. Switch the DT-45096 TransFlow to Flow and add 4 quarts of HP to the transmission.

5181027
16. Switch the DT-45096 TransFlow to Idle (Reducing fluid level in the TransFlow from 20–16).

5181020
17. Switch the TransFlow DT-45096 to Flow and start the engine:

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Service Update
N192217820 Torque Converter Shudder/Shake
17.1. Add a maximum of 4 quarts of HP Fluid to the transmission, turn the TransFlow switch to idle once 4 quarts have
been added, while allowing 4 additional quarts of oil to fill the DT-graduated bucket (Reducing fluid level in the
TransFlow from 16 – 12).
Note: DO NOT add additional transmission fluid until the 4 quarts of oil have been removed from the transmission
(Reducing fluid level in the TransFlow from 12–8).
17.2. Repeat step 17.1.
17.3. Add a maximum of 5 quarts of HP fluid to the transmission while allowing 5 additional quarts of oil to fill the DTgraduated bucket (Reducing fluid level in the TransFlow from 8 – 3).

5181401
17.4. Shut the engine off once 16 quarts of fluid have been collected.
17.5. Properly dispose of the expelled transmission fluid.
18. Raise the vehicle.
19. Disconnect the DT-45096 TransFlow feed (supply) line from DT-45096-31 TransFlow adapter.
20. Using care, remove DT-45096-31/DT-51190 as an assembly.
21. Remove the DT-51190 fluid fill adapter from DT-45096-31 hose.
22. Install the level set plug and tighten to 9 Nm (80 lb in).
23. Remove DT-52263-1 Adapter Block Assembly from the transmission.
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Service Update
N192217820 Torque Converter Shudder/Shake

1762577
24. Install DT-45096-31 adapters (1) to the transmission oil cooler lines.
25. Connect the DT-45096 TransFlow to the DT-45096-31 adapters.

5210461
26. Switch the DT-45096 TransFlow to Flush.
27. Flush the vehicle cooler and lines using 2 quarts of HP fluid.
27.1.

Flush 1 quart of fluid through the lines, then switch the hose connections and flush 1 quart of fluid in the opposite
direction.

28. Remove the DT-51190/DT-45096-31 assembly.
29. Install the transmission oil cooler pipe using a new cooler block seal.
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Service Update
N192217820 Torque Converter Shudder/Shake
30. Partially lower the vehicle.
31. Start the engine.
32. Using care, shift the transmission through all forward ranges and Reverse.
33. Shift the transmission into Park.
34. Perform the Transmission Fluid Level and Condition Check outlined below in this procedure:
34.1. Get the transmission fluid temperature to the proper temperature.
34.2. Install the level set plug and tighten to 9 Nm (80 lb in).
The TCC shudder condition should be directional improved immediately after the fluid exchange procedure. It may take
up to 320 km (200 mi) for the TCC shudder condition to be eliminated. It is not a requirement for the dealer to drive the
vehicle 320 km (200 mi). The customer should be advised that the full effect will take up to 320 km (200 mi) and a minimum
of two cold to operating temperature drive cycles.
Fluid Exchange Procedure - CTS and ATS Not Equipped with a Rear Differential Cooler
Important: This procedure must be followed as published. The exchange process is required to obtain proper level of
new blue label Mobil 1 Synthetic LV ATF HP fluid. Intermixing of other types of transmission fluid or aftermarket additive