NHTSA ID Number: 10174266
Manufacturer Communication Number: 18NA355
TSB/Document Date: 2020-04-27
Summary
This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition.
lower air filter housing to gain access to the upper
transmission oil cooler line.
5181322
5181307
Note: Upper air filter box removed for clarity.
3. Remove the cooler line from the transmission oil
cooler.
4. Install end of the DT-52263-5 Radiator Cooler
Drain Adapter (1) to the DT-52263-1 Block
Assembly.
5. Install the DT-52263-5 Radiator Cooler Drain
Adapter into the upper transmission oil cooler line
port of the transmission oil cooler.
6. Install the DT-45096-31 adapter (3) over the
removed transmission oil cooler line (2) to prevent
any fluid spillage.
Page 8
April, 2020
Bulletin No.: 18-NA-355
7. Place the hose in the GE-47716-2 Graduated
Measuring Bucket, utilizing a Spring Clamp to
retain the hose.
8. Raise the vehicle.
5182541
9. Install the DT-45096-31 adapter (1) to the
DT-51190 fluid fill adapter (2).
3723839
Important: DO NOT overtighten the DT-51190 as it
can be damaged by excessive torque. Do not
exceed 9 Y (80 lb in).
11. Install the DT-51190/DT-45096-31 assembly and
hand tighten.
12. Connect the TransFlow fluid feed (supply) line (3)
to the DT-45096-31 adapter (2).
13. 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.
14. Utilizing the graduated bucket, start the engine
and run 30-45 seconds until 3 quarts of fluid is
expelled.
15. Shut the engine off immediately.
16. Connect the DT-45096 to the vehicle battery 12
volts and connect shop air to the air connection.
3723844
10. Remove the level set plug (1) from the
transmission oil pan.
5181027
Bulletin No.: 18-NA-355
April, 2020
Page 9
Important: ADDING TOO MUCH FLUID TO THE
TRANSMISSION MAY CAUSE FLUID TO BE
EXPELLED FROM THE VENT SYSTEM. DO NOT
OVERFILL THE TRANSMISSION.
17. Switch the DT-45096 TransFlow to Flow and add 4
quarts of HP to the transmission.
5181020
18. Set the TransFlow switch to idle (Reducing fluid
level in the TransFlow from 20–16).
19. Switch the TransFlow DT-45096 to Flow and start
the engine:
19.1. 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 cylinder (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).
19.2. Repeat step 19.1.
19.3. Add a maximum of 5 quarts of HP Fluid to
the transmission while allowing 5 additional
quarts of oil to fill the DT-graduated bucket
(Reducing fluid level in the TransFlow from
8–3).
5181401
20.
21.
22.
23.
24.
25.
26.
27.
19.4. Shut the engine off once 16 quarts of oil
have been collected.
19.5. Properly dispose of the collected
transmission fluid.
Remove the DT-52263-5 Radiator Cooler Drain
Adapter and DT-52263-1 Block Adapter from the
transmission oil cooler.
Remove the DT-45096-31 from the transmission oil
cooler line and install the transmission oil cooler
line using a new retaining clip.
Install the engine upper air filter box back into
position.
Partially raise the vehicle.
Start the engine.
Using care, shift the transmission through all
forward ranges and Reverse.
Shift the transmission into Park.
Perform the Transmission Fluid Level and
Condition Check outlined below in this procedure:
27.1. Get the transmission fluid temperature to the
proper temperature.
27.2. Raise the vehicle and remove the DT-51190/
DT-45096-31 assembly.
27.3. Install the level set plug.
Tighten
Tighten the plug to 9 Y (80 lb in).
Page 10
April, 2020
Bulletin No.: 18-NA-355
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 – Camaro V8 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 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.
4194576
Note: The MAF sensor must stay connected so that no
DTCs will set.
2. Separate the engine upper air filter box (1) from the
lower air filter housing to gain access to the upper
transmission oil cooler line.
Bulletin No.: 18-NA-355
April, 2020
Page 11
5181307
3723844
Note: Upper air filter box removed for clarity.
3. Remove the upper cooler line from the
transmission oil cooler.
4. Install the DT-52263-2 Cooler Line Plug into the
radiator cooler.
5. Install the DT-52263-4 Hose onto DT-52263-1
Block Assembly install the DT-52263-4 onto the
removed transmission oil cooler line.
6. Place the hose of the DT-52263-1 in the
GE-47716-2 Graduated Measuring Bucket,
utilizing a Spring Clamp to retain the hose.
7. Raise the vehicle.
9. Remove the level set plug (1) from the
transmission oil pan.
3723839
5182541
8. Install the DT-45096-31 adapter (1) to the
DT-51190 fluid fill adapter (2).
Important: DO NOT overtighten the DT-51190 as it
can be damaged by excessive torque. Do not
exceed 9 Y (80 lb in).
10. Install the DT-51190/DT-45096-31 assembly and
hand tighten.
11. Connect the TransFlow fluid feed (supply) line (3)
to the DT-45096-31 adapter (2).
12. 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.
13. Utilizing the graduated bucket, start the engine and
run 30-45 seconds until 3 quarts of fluid is
expelled.
Page 12
April, 2020
14. Shut the engine off immediately.
15. Connect the DT-45096 to the vehicle battery 12
volts and connect shop air to the air connection.
Bulletin No.: 18-NA-355
18. Switch the TransFlow DT-45096 to Flow and start
the engine:
18.1. 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 cylinder (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).
18.2. Repeat step 18.1.
18.3. Add a maximum of 5 quarts of HP Fluid to
the transmission while allowing 5 additional
quarts of oil to fill the DT-graduated bucket
(Reducing fluid level in the TransFlow from
8–3).
5181027
Important: ADDING TOO MUCH FLUID TO THE
TRANSMISSION MAY CAUSE FLUID TO BE
EXPELLED FROM THE VENT SYSTEM. DO NOT
OVERFILL THE TRANSMISSION.
16. Switch the DT-45096 TransFlow to Flow and add 4
quarts of HP to the transmission.
5181401
5181020
17. Set the TransFlow switch to idle (Reducing fluid
level in the TransFlow from 20–16).
18.4. Shut the engine off once 16 quarts of oil
have been collected.
18.5. Properly dispose of the collected
transmission fluid.
19. Remove the DT-52263-4 and DT-52263-1 Block
Adapter from the transmission oil cooler line.
20. Remove the DT-52263-2 Cooler Line Plug from the
transmission oil cooler at the radiator and install
the transmission oil cooler line using a new
retaining clip.
Bulletin No.: 18-NA-355
April, 2020
Page 13
21. Install the engine upper air filter box back into
position.
22. Partially raise the vehicle.
23. Start the engine.
24. Using care, shift the transmission through all
forward ranges and Reverse.
25. Shift the transmission into Park.
26. Perform the Transmission Fluid Level and
Condition Check outlined below in this procedure:
26.1. Get the transmission fluid temperature to the
proper temperature.
26.2. Raise the vehicle and remove the DT-51190/
DT-45096-31 assembly.
26.3. Install the level set plug.
Tighten
Tighten the plug to 9 Y (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 - Camaro, CTS and
ATS 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 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 on a hoist.
5182245
3. Remove the lower/front transmission oil cooler line
(2) at the rear differential.
4. Install the DT-52263-2 Cooler Line Plug (1) into the
rear differential to prevent fluid loss.
5. Install one end of the DT-52263-4 hose (4) to the
open port of the DT-52263-1 Block Assembly (3).
6. Install the other end of the DT-52263-4 hose to the
transmission oil cooler line.
7. Place the hose in the GE-47716-2 Graduated
Measuring Bucket, utilizing a Spring Clamp to
retain the hose.
5182541
8. Install the DT-45096-31 adapter (1) to the
DT-51190 fluid fill adapter (2).
Page 14
April, 2020
Bulletin No.: 18-NA-355
12. 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.
13. Utilizing the graduated bucket, start the engine and
run 30-45 seconds until 3 quarts of fluid is
expelled.
14. Shut the engine off immediately.
15. Connect the DT-45096 to the vehicle battery 12
volts and connect shop air to the air connection.
3723844
9. Remove the level set plug (1) from the
transmission oil pan.
5181027
3723839
Important: DO NOT over tighten the DT-51190 as it
can be damaged by excessive torque. Do not
exceed 9 Y (80 lb in).
10. Install the DT-51190/DT-45096-31 assembly and
hand tighten.
11. Connect the TransFlow fluid feed (supply) line (3)
to the DT-45096-31 adapter (2).
16. Switch the TransFlow DT-45096 to Flow and add 4
quarts of HP to the transmission.
17. Set the TransFlow switch to idle (Reducing fluid
level in the TransFlow from 20–16).
18. Switch the TransFlow DT-45096 to Flow and start
the engine:
18.1. 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).
18.2. Repeat step 18.1.
18.3. Add a maximum of 5 quarts of HP Fluid to
the transmission while allowing 5 additional
quarts of oil to fill the DT-graduated bucket
(Reducing fluid level in the TransFlow from
8–3).
Bulletin No.: 18-NA-355
April, 2020
Page 15
(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 - Corvette and CT6
Important: The Drain and Fill Procedure Will Need
to be Performed Three Times.
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 24 quarts of HP fluid.
2. Raise the vehicle.
3. Using care, remove the transmission oil pan and
drain the transmission fluid.
4. Install the transmission oil pan.
5181401
19.
20.
21.
22.
23.
24.
18.4. Shut the engine off once 16 quarts of fluid
have been collected.
18.5. Properly dispose of the collected
transmission fluid.
Raise the vehicle.
Remove the DT-52263-2 Cooler Line Plug from
rear differential and install the transmission oil
cooler line using a new retainer clip.
Remove the DT-52263-4 from the transmission oil
cooler line.
Install the transmission oil cooler line using a new
retainer clip.
Partially lower the vehicle.
Using care, shift the transmission through all
forward ranges and Reverse.
24.1. Get the transmission fluid temperature to the
proper temperature.
24.2. Raise the vehicle and remove the DT-51190/
DT-45096-31 assembly.
24.3. Install the level set plug.
5182541
5. Install the DT-45096-31 adapter (1) to the
DT-51190 fluid fill adapter (2).
Tighten
Tighten the plug to 9 Y (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
3723844
Page 16
April, 2020
Bulletin No.: 18-NA-355
Transmission Fluid Level and Condition
Check
6. Remove the level set plug (1) from the
transmission oil pan.
This procedure checks both the transmission fluid level,
as well as the condition of the fluid itself. Because the
transmission on this vehicle is not equipped with a fill
tube and dipstick, a tube in the bottom pan is used to
set the fluid level.
Warning: The transmission fluid level must be
checked when the transmission fluid temperature
(TFT) is between 35–45°C (95–113°F). If the TFT is
not within this range, either idle or brake torque the
vehicle to raise the fluid temperature, or shut off the
vehicle to allow the fluid to cool as required. Setting
the fluid level with a TFT outside this range will
result in either an under or over-filled transmission.
TFT>45°C=under-filled, TFT
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TSB/Document ID: 18NA355
Replacement Service Bulletin Number:
MFR Communication Date: 2020-03-30
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
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