NHTSA ID Number: 10177519
Manufacturer Communication Number: 21-037-20
TSB/Document Date: 2020-07-27
Summary
Transmission Case Oil Leak This bulletin involves tightening the lower transmission bolts to updated torque specifications to possibly eliminate a leak at the case split line of the transmission. Customers may notice (possibly transmission) fluid leaking on the ground from the left front of the vehicle.
NUMBER:
GROUP:
DATE:
21-037-20
21 - Transmission and
Transfer Case
June 2, 2020
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA
US LLC.
SUBJECT:
Transmission Case Oil Leak
OVERVIEW:
This bulletin involves tightening the lower transmission bolts to updated torque specifications to
possibly eliminate a leak at the case split line of the transmission.
MODELS:
2019
(VM)
RAM
ProMaster City
NOTE: This bulletin applies to vehicles within the following markets/countries: North
America, APAC, EMEA and LATAM.
NOTE: This bulletin applies to vehicles equipped with a 9-SPD 948TE FWD/AWD Auto
Transmission (Sales Code DFH).
SYMPTOM/CONDITION:
Customers may notice (possibly transmission) fluid leaking on the ground from the left front of the
vehicle.
DIAGNOSIS:
If the customer describes the symptom/condition listed above, perform the Diagnosis Procedure.
1. Inspect the transmission tag located under the shifter cable, for the plant code and build
date(Fig. 1) .
NOTE: It may be necessary to remove the Powertrain Control Module (PCM) and the two
bolts holding the shifter cable, to view the transmission tag.
21-037-20
-2-
Fig. 1
(Reference Picture) for Transmission Tag Location
1
2
3
4
-
Cable
Release Collar
Bracket
Transmission Tag
2. Remove the PCM. Refer to the detailed service procedures available in DealerCONNECT>
Service Library under: 08 - Electrical / 8E - Electronic Control Modules / Module, Powertrain
Control (PCM) / Removal.
3. Remove the two bolts securing the shifter cable to the transmission to view the transmission
tag.
4. Inspect and note the transmission tag numbers from the transmission.
5. Install the two bolts securing the shifter cable to the transmission. Tighten M6 X 1.0 X 20.0 bolt
to 8 N·m (71 in. lbs). or M6 X 1.00 X 35.00 bolt to 10 N·m (88 in. lbs).
6. Install the PCM. Refer to the detailed service procedures available in DealerCONNECT>
Service Library under: 08 - Electrical / 8E - Electronic Control Modules / Module, Powertrain
Control (PCM) / Installation.
7. Is the transmission tag showing the plant code J or Z and is within these date ranges within the
table?
• YES>>> Unit falls within the suspect build date range, proceed to Step 8.
• NO>>> Tag is not showing these plant codes or date range this bulletin does not apply. Normal
diagnosis should be performed.
Affected Date Range – Plant Code J
Date Ranges
Examples
Calendar day 249 to
365
Calendar day 001 to
182
Date code with J1168
=> not affected
Date code with J2189
=> not affected
Calendar year 8
Calendar year 9
Date code with J3018
=> affected
Date code with J0279
=> affected
-3-
21-037-20
Affected Date Range – Plant Code Z
Date Ranges
Calendar day 249 to
Calendar year 8
365
Examples
Date code with Z1168
=> not affected
Date code with Z3018
=> affected
Calendar day 001 to
095
Date code with Z1189
=> not affected
Date code with Z0279
=> affected
Calendar year 9
8. Remove the belly pan (if equipped). Refer to the detailed service procedures available in
DealerCONNECT> Service Library under: 13 - Frame and Bumpers/Under Body Protection/
Belly Pan/Removal.
9. Verify the leak is at the split in the transmission case (Fig. 2) .
10. Is the leak at the split in the transmission case location and not leaking from higher up or any
other location (Fig. 2) ?
• YES>>> Proceed to Step 1 of the Repair Procedure.
• NO>>> This Bulletin does not apply. Normal diagnosis should be performed.
Fig. 2
(Reference Picture) Potential Leak Area at Case Split
21-037-20
-4-
PARTS REQUIRED:
Qty.
1 (AR)
(AR)
Part No.
68081823AD
68218925AB
Description
Gasket, Exhaust
Fluid, Automatic Transmission
REPAIR PROCEDURE:
1. Remove the cross under exhaust pipe for access (if necessary). Refer to the detailed service
procedures available in DealerCONNECT> Service Library under: 11 - Exhaust System / Pipe,
Exhaust Crossunder / Removal .
2. Remove the transmission mount bracket to gain access to bolts 1 & 2 (Fig. 3) .
Fig. 3
(Reference Picture) Support Bracket to be Removed
-5-
21-037-20
3. Starting at bolt #8 and then working to bolt #1, torque bolts to 35 N·m (26 ft. lbs.) (Fig. 4) .
CAUTION! Do not rotate the bolts counter clockwise.
Fig. 4
(Reference Picture) Eight Bolts to be Torqued to Specifications at Potential Leak Area at the Case Split
4. Install the transmission mount bracket (Fig. 3) .
5. Install the cross under exhaust pipe (if removed). Refer to the detailed service procedures
available in DealerCONNECT> Service Library under: 11 - Exhaust System / Pipe, Exhaust
Crossunder / Install.
6. Check transmission fluid level and adjust as needed. Refer to the detailed service procedures
available in DealerCONNECT> Service Library under: 21 - Transmission and Transfer Case /
Automatic - 948TE/9HP48 / Fluid and Filter / Standard Procedure> Fluid Level Check.
7. Start the vehicle and verify the transmission fluid temperature is above 50 °C (122 °F).
8. Verify the transmission fluid is not leaking at the repair area (Fig. 2) , if a leak is still detected
further diagnosis should be performed.
9. Install the belly pan (if removed). Refer to the detailed service procedures available in
DealerCONNECT> Service Library under: 13 - Frame and Bumpers/Under Body Protection/
Belly Pan/Install.
POLICY:
Reimbursable within the provisions of the warranty.
21-037-20
-6-
TIME ALLOWANCE:
Labor Operation
No:
21-00-04-9D
Description
Skill Category
Amount
Fasteners, Transmission Case Torque to
Specification
(3 - Highly Skilled)
2 - Automatic
Transmission
1.4 Hrs
RELATED TIME ALLOWANCE:
Labor Operation
No:
Description
Skill Category
Amount
21-00-04-54
Exhaust Cross Under Pipe
2 - Automatic
Transmission
0.3 Hrs
FAILURE CODE:
ZZ
Service Action
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
- Formulated for engines with 75,000 miles or more, Valvoline...
- Delivers 20% better wear protection and 15% better sludge...
- Extra detergents safeguard against friction, corrosion and...
- Advanced friction-fighting additives help maximize...
- Provides performance benefits for high mileage, new and...
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: 21-037-20
Replacement Service Bulletin Number:
MFR Communication Date: 2020-06-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:SEALS/GASKETS
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS
, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
Last update on 2026-07-02 / Affiliate links / Images from Amazon Product Advertising API
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU c0ding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA
AutoAuth: Now supports FCA
SGW module for Chrysler
, for Jeep
, for Dodge
(2018+), for Fiat
(2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Pr0gramming): Allows for Ford
, for Lincoln
, and for Mazda
ECU pr0gramming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order - 39+ Services/Resets/Adaptations/Relearns/Calibrations: XTOOL D7S full system car scanner diagnostic tool tackles 99% of common car issues through its 36+ special functions, including Oil Reset, EPB, SAS, BMS, Throttle Reset, Injector C0ding, ABS
Bleed, TPMS Reset, Power Balance, etc and also covers specific-vehicle functions like Crank Sensor Relearn, ABS
Initialization, Cylinder Power Balance, Fuel Trim Reset, Idle Relearn etc. This car diagnostic scanner enhances efficiency, making repairs and maintenance hassle-free. Tip: DO NOT for All vehicles, please check compatibility first - Cost-effective ECU C0ding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW
, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford
, for Mazda
, and for Lincoln
. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase - OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
Last update on 2026-06-30 / Affiliate links / Images from Amazon Product Advertising API
- 【✅Compared to BOSSCOMM IF742, IF745 Offers Full-System Diagnostics】The BOSSCOMM IF745 car diagnostic scanner is an upgraded model of IF742. In addition to supporting all OBD2 Code Reader functions and 6 reset options (ABS
/EPB/SAS/BMS/Oil/Throttle), it expands diagnostics from 4 systems (Check Engine/ABS
/SRS/Transmission) to vehicle All systems, including Steering, Suspension, and Body Electronics. This provides deeper, more comprehensive diagnostic capabilities. - 【✨10 OBD2 Functions】The BOSSCOMM IF745 scan tool’s DTC Lookup instantly translates fault codes into user-friendly explanations, its I/M Readiness feature streamlines emissions testing with a single tap, and Freeze Frame lets you pinpoint the exact moment of a fault for in-depth root-cause diagnosis. Combined with a live data dashboard and advanced diagnostics (O2S, OBMon, EVAP), it delivers comprehensive insights for confident troubleshooting.
- 【✨Deep Diagnostics for All Vehicle System Modules】Beyond code reading/clearing and ECU information retrieval, our all-in-one data stream feature lets you inspect all current fault codes and their locations across the vehicle’s systems. This vehicle code reader helps you turn off dashboard warning lights and perform a comprehensive self-check of your car at home—no more back-and-forth trips to the repair shop or hefty inspection fees.
- 【✨6 Essential Resets: ABS
Bleeding, Oil, EPB, SAS, Throttle, BMS】The BOSSCOMM IF745 obd2 scanner diagnostic tool swiftly purges air from brake lines to restore braking sensitivity, fine-tunes maintenance cycles to eliminate false alerts, resolves parking brake issues with one-click control, recalibrates steering sensors for stability, optimizes engine idling/acceleration for smoother performance, and deeply resets battery systems to extend lifespan and range via precise parameter adjustments.❗NOTE: Does NOT support bidirectional control, coding, or programming. - 【✨10,000+ Car Models, AutoVIN, 13 Languages】The BOSSCOMM IF745 vehicle scanner diagnostic tool covers 73+ global car brands and offers support in 13 languages, making it perfect for DIYers, auto mechanics, or as a thoughtful gift. With a single-click AutoVIN feature, it instantly retrieves vehicle serial numbers, streamlining diagnostics for users globally. This adaptable tool balances user-friendliness with precision, catering to both personal and professional requirements.✅Unsure about compatibility? Compatibility will vary on vehicles' model and year, pls reach us via 📧 [email protected] 📧 before purchase.
Last update on 2026-07-02 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.




