NHTSA ID Number: 11007649
Manufacturer Communication Number: 21-039-24 REV. C
TSB/Document Date: 2024-09-10
Summary
"D Clutch Repair Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0733-00 - Gear 3 Shift Incorrect Ratio. ● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective. ● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective. This bulletin involves replacing the D clutch."
Technical Service Bulletin (TSB)
D Clutch Repair
REFERENCE:
TSB: 21-039-24 REV. C
GROUP: 21 - Transmission and Transfer
Case
Date:
September 6, 2024
VEHICLES
AFFECTED:
2022 (WS) Wagoneer / Grand Wagoneer
2020 - 2023 (WD) Dodge
Durango
2020 - 2023 (LD) Dodge Charger
2020 - 2023 (LA) Dodge Challenger
2020 - 2023 (DT) RAM 1500 Pickup
2021 - 2023 (DS) RAM 1500 Classic
2021 - 2023 (DX) RAM Truck (Mexico)
2020 - 2023 (WK) Jeep Grand Cherokee
2021 - 2023 (WL) Jeep Grand Cherokee / Grand Cherokee L
2020 - 2023 (JT) Jeep Gladiator
2020 - 2023 (JL) Jeep Wrangler
2020 - 2023 (LX) Chrysler 300
This bulletin applies to vehicles equipped with an Eight-Speed Auto
850RE Transmission (Sales Code DFT).
REVISION: 21-039-24 REV. B
MARKET APPLICABILITY:
NA
MEA
SA
IAP
EE
CH
CUSTOMER
SYMPTOM:
Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must
exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
● P0733-00 - Gear 3 Shift Incorrect Ratio.
● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective.
● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective.
CAUSE:
D Clutch Repair
This bulletin supersedes Technical Service Bulletin (TSB) 21-039-24 REV. B, date of issue August 07,
2024, which should be removed from your files. All revisions are highlighted with **asterisks** and
include an updated LOP time.
REPAIR SUMMARY:
This bulletin involves replacing the D clutch.
CLAIMS DATA:
Labor Operation No:
21-00-64-90
21-00-64-91
Labor Description
D Clutch - Inspect and
Replace 2020-2023 DT
2021-2023 DX / DS
(3 - Highly Skilled)
D Clutch - Inspect and
Replace 2020-2023 WD /
WK
(3 - Highly Skilled)
Skill Category
2 - Transmission and
Transfer Case
Labor Time
9.7 Hrs.
2 - Transmission and
Transfer Case
7.9 Hrs.
M21 FSAR-TSB-4430
Labor Operation No:
21-00-64-92
21-00-64-93
21-00-64-94
21-00-64-95
Failure Code
-2Labor Description
D Clutch - Inspect and
Replace 2020-2023 LA /
LD / LX
(3 - Highly Skilled)
D Clutch - Inspect and
Replace 2020-2023 JL /
JT
(3 - Highly Skilled)
D Clutch - Inspect and
Replace 2021-2023 WL
(3 - Highly Skilled)
D Clutch - Inspect and
Replace 2022 WS
(3 - Highly Skilled)
ZZ
Skill Category
2 - Transmission and
Transfer Case
Labor Time
6.7 Hrs.
2 - Transmission and
Transfer Case
6.4 Hrs.
2 - Transmission and
Transfer Case
7.3 Hrs.
2 - Transmission and
Transfer Case
5.4 Hrs.
Service Action
RELATED LOPS:
Labor Operation No:
21-00-64-60
21-00-64-64
21-00-64-66
21-00-44-66
21-00-62-66
21-00-00-51
Labor Description
Skid Plate - 2020-2023
DT 2021-2023 DX / DS
2020-2023 WD / WK
2020-2023 JL / JT
(3 - Highly Skilled)
MGU Equipped 2020-2023 DT 2020-2023
JL / JT
(3 - Highly Skilled)
4x4/AWD Equipped 2020-2023 DT 2021-2023
DX / DS 2020-2023 WD /
WK
(3 - Highly Skilled)
4x4/AWD Equipped 2020-2023 LA / LD / LX
(3 - Highly Skilled)
4x4/AWD Equipped 2021-2023 WL
(3 - Highly Skilled)
Adaptation Procedure 2020-2023 DT 2021-2023
DX / DS 2020-2023 WD /
WK 2020-2023 LA / LD /
LX 2020-2023 JL / JT
2021-2023 WL 2022 WS
(2 - Skilled)
Skill Category
2 - Transmission and
Transfer Case
Labor Time
0.4 Hrs.
2 - Transmission and
Transfer Case
0.3 Hrs. **(DT Only)
1.2 Hrs. (JL/JT Only)**
2 - Transmission and
Transfer Case
0.6 Hrs.
2 - Transmission and
Transfer Case
1.2 Hrs.
2 - Transmission and
Transfer Case
1.0 Hrs.
2 - Transmission and
Transfer Case
1.0 Hrs.
-3-
M21 FSAR-TSB-4430
SPARE PARTS:
Qty
1 (AR)
Part No.
68676890AB
1 (AR)
68676891AB
1 (AR)
68676887AB
1 (AR)
68239499AD
1 (AR)
68676892AB
1 (AR)
68676894AB
1 (AR)
68676893AB
10 (AR)
68218925AB
Description
Notes
D Clutch Repair Kit (4x4
JL, JT, WD, WK)
D Clutch Repair Kit (4x4
WL)
D Clutch Repair Kit (4x4
DS, DT, DX, WS)
D Clutch Repair Kit (AWD
LA, LD, LX)
D Clutch Repair Kit (RWD
LA, LD, LX)
D Clutch Repair Kit (RWD
WD, WK))
D Clutch Repair Kit (RWD
DS, DT, DX, WS)
Automatic Transmission
Fluid
DIAGNOSIS:
If the customer describes the symptom/condition above, perform the repair procedure.
SPECIAL TOOLS/EQUIPMENT:
Description
Guide Sleeve
Press Fixture
Bearing/Gear
Rings, Support
Ref. No.
10377
8925-3
1130
10378
Notes
REPAIR PROCEDURE:
CAUTION!
The Transmission Control Module (TCM), or Transmission Control Module Assembly (TCMA) is
extremely sensitive to Electrostatic Discharge (ESD). Always use a ground strap and follow the ESD
guidelines in Electrostatic Discharge Sensitive Devices. Failure to follow these instructions may result
in damage to the TCM/TCMA.
CAUTION!
If the transmission is being reconditioned (clutch/seal replacement) or replaced, it is necessary
to perform the TCM Adaptation Procedure. Refer to the detailed service procedures available in
DealerCONNECT/Service Library under: Service Info>08 - Electrical/8E - Electronic Control Modules/
Module, Transmission Control/ Module Programming.
NOTE: Tag all clutch pack assemblies, as they are removed, for reassembly identification.
M21 FSAR-TSB-4430
-4-
1. Are DTCs P0733, P1DA8 or P1D92 present?
● YES>>> Proceed to Step 2.
● NO>>> The bulletin does not apply.
2. If code is present, pressure check the D clutch circuit using dealer connect procedure. Refer to the detailed
service procedures available in DealerCONNECT/Service Library under: Service Info>21 - Transmission
and Transfer Case / Automatic - 8HP50/850RE / Diagnosis and Testing / Clutch Air Pressure Tests.
3. If D clutch fails pressure check. Remove the transmission. Refer to the detailed service procedures
available in DealerCONNECT/Service Library under: Service Info>21 - Transmission and Transfer Case /
Automatic - 8HP50/850RE / Removal.
4. Remove the torque converter Fig. 1.
Fig. 1
Torque Converter
1 - Torque Converter
5. If equipped with 4WD, remove the transmission housing extension bolts and remove the extension housing
Fig. 2.
Fig. 2
Extension Housing
1 - Extension Housing Bolts
2 - Extension Housing
-56. Remove the transmission output shaft seal Fig. 3.
Fig. 3
Transmission Output Shaft Seal
1 - Transmission Output Shaft Seal
7. Remove the output shaft snap ring Fig. 4.
NOTE: For 4X4 only.
Fig. 4
Output Shaft Snap Ring
1 - Output Shaft Snap Ring
M21 FSAR-TSB-4430
M21 FSAR-TSB-4430
-6-
8. Remove the output shaft flange locknut staking Fig. 5.
NOTE: 2WD only.
Fig. 5
Output Shaft
1 - Output Shaft Flange Locknut Staking
2 - Output Shaft Flange
3 - Output Shaft Flange
9. Using a flange holder, remove the output shaft flange nut.
10. Remove the output shaft flange and inspect the output shaft flange sealing surface for damage, replace as
needed.
11. Remove the transmission oil pan bolts Fig. 6.
NOTE: Inspect the gasket for reuse. If the seal is cut or torn, replace the gasket.
Fig. 6
Transmission Oil Pan
1 - Transmission Oil Pan Bolts
2 - Transmission Oil Pan
12. Carefully remove the transmission oil pan and gasket.
-7-
M21 FSAR-TSB-4430
13. If equipped, disconnect the Hydraulic Impulse Oil Storage (H.I.S) connector Fig. 7.
Fig. 7
Hydraulic Impulse Oil Storage
1 - Hydraulic Impulse Oil Storage (H.I.S) Connector
2 - Hydraulic Impulse Oil Storage (H.I.S) Bolts
14. If equipped, remove bolts and the H.I.S. accumulator.
15. Remove the valve body assembly end retainer bolts Fig. 8.
Fig. 8
Valve Body Assembly
1 - Valve Body Assembly End Retainer Bolt
2 - Valve Body Assembly End Retainer Bolt
3 - Electrical Connector Lock
16. Lift the electrical connector lock to release the internal harness end from inside the transmission for valve
body assembly removal.
M21 FSAR-TSB-4430
-8-
17. Remove the Output Speed Sensor bolt and gently lift the Output Speed Sensor out from the case Fig. 9.
Fig. 9
Output Speed Sensor
1 - Output Speed Sensor Bolt
18. Using Guide Sleeve 10377, carefully pull the electrical harness insulator straight out from the transmission
case Fig. 10.
Fig. 10
Electrical Harness Insulator
1 - Remover/Installer, Guide Sleeve 10377
2 - Electrical Harness Insulator
-9-
M21 FSAR-TSB-4430
19. Remove the valve body assembly bolts in the order shown and remove the valve body Fig. 11.
Fig. 11
Valve Body Assembly
20. Remove the fluid port from the transmission or valve body assembly (the fluid port may stick in the valve
body upon removal) Fig. 12.
Fig. 12
Fluid Port
1 - Fluid Port
21. Remove the fluid transfer tube and O-rings.
M21 FSAR-TSB-4430
-10-
22. Remove the input shaft O-ring using a small pick or equivalent Fig. 13.
Fig. 13
Input Shaft O-ring
1 - Input Shaft O-ring
23. Remove and discard the oil pump housing bolts Fig. 14.
NOTE: Remove the input shaft O-ring before the oil pump is removed.
Fig. 14
Oil Pump Housing
1 - Oil Pump Housing Bolts
-11-
M21 FSAR-TSB-4430
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TSB/Document ID: 21-039-24 REV. C
Replacement Service Bulletin Number:
MFR Communication Date: 2024-09-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System: D Clutch Repair
MFR Component Subsystem:
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