2019 Cadillac XT4 9T50 Transmission And Stack Plate Heat Exchanger (Automatic Transmission Fluid Cooler Exchanger) Restriction

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Bulletin No.: PIP5645B Published date: 07/23/2019
Preliminary Information
PIP5645B 2019 Cadillac XT4 9T50 Transmission And Stack Plate Heat Exchanger (Automatic Transmission
Fluid Cooler Exchanger) Restriction Has Ended
Models

Brand: Model: Model Years:

VIN:
from to

Engine: Transmissions:

Cadillac XT4 2019 All All
All M3H

Involved Region or Country North America and NA Exports.
Condition Transmission shudder and/or shifting concerns.
Cause
The Automatic Transmission Fluid Cooler Exchanger, also referred as a Stack Plate

Heat Exchanger, restriction has ended.
Your co-operation during this restriction was appreciated.
Correction:
General Motors Technical Assistance Center part restriction on 2019 Cadillac XT4 9T50 Transmission
And Stack Plate Heat Exchanger has ended.
We would like to thank all dealers who participated in this restriction for their cooperation.
This Transmission And Stack Plate Heat Exchanger can now be ordered through the regular GM CCA
parts process or PQC process for required dealers.
Use the vehicle identification number (VIN), SI, and the GM Electronic Parts Catalog to determine
the correct part to order.
Please refer to bulletin 18-NA-378, and/or 08-07-30-035, if additional information is needed.
Note : PQC contact is not required to close SUB N182205680-01, but if trans fluid contamination is
suspect, may want to obtain an ethylene glycol test kit to see if TSB 18-NA-378 applies.
Version History
Version 3
05/13/2019 – Created on
05/17/2019 – Updated to correct P/Ns for the torque converter.

Modified

07/23/19 – Updated to advise the Stack Plate Heat Exchanger restriction has ended.

Bulletin No.: PIP5645A Published date: 05/17/2019
Preliminary Information
PIP5645A 2019 Cadillac XT4 9T50 Transmission And Stack Plate Heat Exchanger (Automatic Transmission
Fluid Cooler Exchanger) Restriction
Models

Brand: Model: Model Years:

VIN:
from to

Engine: Transmissions:

Cadillac XT4 2019 All All All
M3H

Involved Region or
Country North America and NA Exports
Condition Transmission shudder and/or shifting concerns.
The Automatic Transmission Fluid Cooler Exchanger, also referred as a Stack Plate Heat Exchanger,
may have an internal concern that could

Cause

possibly induce engine coolant, ethylene glycol, into the transmission fluid. Due to this
possibility, the transmission assembly, the torque converter, and the exchanger will be on a
restriction for engineering to review.
Restricted Part numbers:
24290617 Stack Plate Heat Exchanger / Automatic Transmission Fluid Cooler Exchanger 24291764
Torque Converter (FWD)
24291760 Torque Converter (AWD) 24274847 FWD Transmission
24293570 AWD Transmission
Correction:
Please create a PQC case using the Dealer Case Management (DCM) system.
Provide the information for the following questions using the PQC DCM-Parts Restrictions Template
found in the Global Connect Support Tab.
Click on the TAC-PQC Tab.
Click on PQC Parts Restrictions Templates and complete the PQC PIP5645 2019 Cadillac XT4 9T50.
Transmission Restriction Template

Attach the completed template to the DCM case.
If needed, refer to the following links when creating a PQC case:

Getting Started with DCM Homepage in Global Connect

Technical Assistance Center (TAC) Home page in Global Connect

Note : You will need a Glycol Test kit as referenced in 08-07-30-035C: Information on Water or
Ethylene Glycol in Transmission Fluid, prior to contacting PQC for XT4 vehicles. Glycol test (P/N
WPC #835) can also be obtained through WPC if you do not already have one at the dealership.
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Caller’s Name/Position:
Technician’s Name and Direct Phone: Parts Manager name:

Parts Dept. Fax #:
Dealership’s Current Address:
Vehicle Times In/Days Down

Q1: Is this request for P/Ns 24291764 or 24291760 for a XT4 vehicle?
Q2: Are you calling to complete Service Update Bulletin N182205680 for P/N 24290617? Q3: Is the
part being requested for Customer Pay?
Q4: What is the customer’s concern?
* Was the concern duplicated? Q5: Describe the failure of the part. Q6: Why is replacement
needed?
Q7: Was TAC contacted?
Q8: Has DMA requested replacement?
Q9: Are there any transmission-related DTCs?
Note: (Do Not clear any DTCs prior to reviewing with engineering).
• Are there any shifting issues (late, early, missed, harsh, flare, slip, no shift)?
• When does the issue occur (hot, cold, under accel/decel)?
• Is there any unwanted vibration?
• Any other transmission performance issues? Q10: Transmission Fluid:
Fluid level?
Was fluid contaminated? Was Glycol Test Completed?
If no, refer to bulletin 18-NA-378.
If yes, provide the results and attach a picture of the results to the DCM case as shown in the
sample picture.

Results – PPM Q11: Are there any leaks?
If no, continue to next question

If yes,
What type of leak?
Location of the leak?
Q12: Any noise coming from the trans assembly?
If no, continue to next question. If Yes,
What kind of noise?
Location of the noise?
Q13: Has the vehicle been modified with non-production accessories?
Q14: Is the vehicle for personal or commercial use?
Q15: Transmission Broadcast Code:
Q16: Transmission Serial Number:
Version History
Version 2
Modified Updated 05/17/2019 to correct P/Ns for the torque
converter.

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