# Service bulletin SSM 51057

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10219068
- Published by NHTSA: 2022\-09\-01
- Manufacturer's number: SSM 51057
- Manufacturer's date: 2022\-08\-31
- NHTSA component: POWER TRAIN

## NHTSA's summary

Some 2021\-2022 Mustang Mach\-E, 2022 Escape/Bronco Sport/Maverick/Transit vehicles may exhibit a powertrain malfunction \(wrench\) indicator with diagnostic trouble code \(DTC\) P0929:77 stored in the gear shift module \(GSM\). This may be due to the software in the GSM. To correct this condition, reprogram the GSM module using the latest software level of the Ford Diagnosis and Repair System \(FDRS\). For claiming, use causal part 7P155 and applicable labor operations in Section 10 of the Service Labor Time Standards \(SLTS\) Manual.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10219068-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10219068-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Trouble codes named

P0929

## Vehicles listed

- 2022 FORD BRONCO SPORT
- 2022 FORD ESCAPE
- 2022 FORD MAVERICK
- 2021 to 2022 FORD MUSTANG MACH E
- 2022 FORD TRANSIT

## Recalls for the same vehicles and component

- [2026317](/recalls/tc/2026317.md), 2026-06-30: Powertrain
- [26V417000](/recalls/nhtsa/26V417000.md), 2026-06-30: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
- [25V881000](/recalls/nhtsa/25V881000.md), 2025-12-18: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [25V158000](/recalls/nhtsa/25V158000.md), 2025-03-14: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
- [2025108](/recalls/tc/2025108.md), 2025-03-02: Powertrain
- [25V133000](/recalls/nhtsa/25V133000.md), 2025-02-28: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [25V127000](/recalls/nhtsa/25V127000.md), 2025-02-28: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [24V590000](/recalls/nhtsa/24V590000.md), 2024-08-09: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [2024270](/recalls/tc/2024270.md), 2024-05-10: Powertrain
- [24V330000](/recalls/nhtsa/24V330000.md), 2024-05-10: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## Other bulletins for the same vehicles and component

- [SSM 55221](/bulletins/11038438.md), 2026-10-12, Service bulletin: UNKNOWN OR OTHER; POWER TRAIN; ELECTRICAL SYSTEM. For 20222026 vehicles equipped with a 8F35 transmission, a revision to the Road Testing Vehicle procedure has been made in the WSM, Section 307\-01 \> Diagnosis and Testing. This updated procedure improves the diagnosis of customer reported transmission concerns and aids in locating the proper root cause. During diagnosis and testing, details regarding whether the condition is more prevalent when the vehicle is hot or cold, throttle percentage at the time of occurrence, vehicle speed, the specific shift involved, and whether the issue occurs during transmission engagements \(N\>R, N\>D, R\>D, and/or D\>R\) should be noted in the warranty claim. Engineering requests including these detailed operating conditions that will significantly assist with root cause analysis. Diagnosis, testing, and repair should use established labor times outside this article.
- [TSB 26\-2408](/bulletins/11037559.md), 2026-09-30, Service bulletin: POWER TRAIN. This bulletin supersedes 26\-2309. Reason For Update: update the Model section to remove Aviator 10R80, update the Parts list to add 3.3L to W520514\-S440, and add L1MZ\-7Z490\-G valve body separator plate for Aviator. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* Harsh 3\-4, 4\-5 upshifts \* Harsh 5\-3, 4\-3 downshifts \* Harsh reverse engagements These symptoms may be worse when cold. This may be due to the F clutch friction plates brinelling into the clutch and planetary container cylinder \(7B177\).
- [TSB 26\-2328](/bulletins/11035099.md), 2026-07-20, Service bulletin: POWER TRAIN; UNKNOWN OR OTHER. This bulletin supersedes 26\-2194. Reason for update: update the Parts list to correct a part description " Loctite 638", update the claim quantity for the drain/fill plug, update the claim quantity of the wheel hub bolts \(Corsair\) and limited the parts list for Edge/Nautilus to only the rear drive unit fluid. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No relevant diagnostic trouble codes \(DTCs\) present This may be due to internal rear drive unit \(RDU\) fluid contamination.
- [SSM 54980](/bulletins/11034857.md), 2026-07-08, Service bulletin: POWER TRAIN; FUEL/PROPULSION SYSTEM; ENGINE. Some 2022\-2024 Maverick Hybrid vehicles may exhibit an intermittent vibration and/or crunching noise after a cold start while the engine is running with the vehicle stationary in drive with no throttle input and brakes applied. An intermittent engine rocking or rolling motion in one direction may also be observed while the concern is present with the hood open. The noise may be present with no drivability concerns, relevant diagnostic trouble codes \(DTC\) stored, warning indicators illuminated and/or warning messages displayed. The noise may reduce or be eliminated after several minutes of driving when the powertrain warms up. This condition does not affect vehicle durability and no additional diagnosis or service is required for this condition at this time. Inform customers that they can continue to drive the vehicle and engineering is currently working on a solution for this condition that is expected in Q3 of 2026. Replacement of the engine or transmission will not resolve this condition. Monitor Professional Technician System \(PTS\) for additional information and schedule
- [TSB 26\-2309](/bulletins/11034224.md), 2026-07-01, Service bulletin: POWER TRAIN. This bulletin supersedes 26\-2241. Reason For Update: update the parts list to correct the claim quantity of the part number JB3Z\-4B496\-B from 3 to 6. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* Harsh 3\-4, 4\-5 upshifts \* Harsh 5\-3, 4\-3 downshifts \* Harsh reverse engagements These symptoms may be worse when cold. This may be due to the F clutch friction plates brinelling into the clutch and planetary container cylinder \(7B177\).
- [SSM 54939](/bulletins/11034017.md), 2026-06-22, Service bulletin: POWER TRAIN. Some 2020\-2026 Corsair/Escape, 2021\-2026 Bronco Sport, and 2022\-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph \(100 km/h\), with no relevant diagnostic trouble codes \(DTC\) stored in the powertrain control module \(PCM\). Sometimes, this may be perceived/felt as an engine misfire. This may be due to the torque converter. If Pinpoint Test K: Torque Converter Clutch Operation in Workshop Manual \(WSM\), Section 307\-01 \> Diagnosis and Testing \> Diagnosis by Symptom directs to replace the torque converter, remove and replace the torque converter and torque converter seal. Refer to WSM, Section 307\-01 \> Removal and Installation \> Torque Converter Seal. Remove the main control valve body. Refer to WSM, Section 307\-01 \> Removal and Installation \> Main Control Valve Body. Overhaul and thoroughly clean the main control valve body. Refer to WSM, Section 307\-01 \> Overhaul \> Main Control Valve Body. Reverse the removal procedure to reassemble the transmission. Install the transmission. Refer to WSM, Section 307\-01 \> Installation. For claim
- [TSB 26\-2241](/bulletins/11032750.md), 2026-05-18, Service bulletin: POWER TRAIN. This bulletin supersedes 25\-2587. Reason For Update: update the Parts list to add the F\-clutch friction plates HL3Z\-7B164\-D and the F\-clutch steel plates PR3Z\-7B164\-A for the proper vehicle lines, replace the transfer case mounting bolt part number from W714288\-S438 to W714288\-S437, update the part number W720688\-S439 quantity from 2 to 1, update the part number ML3Z\-7869\-C claim quantity from 2 to 1 \(only if necessary\), update the description of CXT\-10\-LV6 and XT\-10\-QLVC by adding "transfer case fluid, 4WD only", move HL3Z\-7A191\-B and L1MZ\-7F396\-A fluid pan gaskets to the parts to inspect and replace list, and remove TL1Z\-6775\-A self adhesive heat shield from the F\-150/Expedition/Navigator parts list as it is not a discard item. Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: \* Harsh 3\-4, 4\-5 upshifts \* Harsh 5\-3, 4\-3 downshifts \* Harsh reverse engagements These symptoms may be worse when cold. This may be due to the F clutch friction plates brinelling into the clutch and planetary container cylinder \(7B177\).
- [TSB 26\-2226](/bulletins/11032697.md), 2026-05-14, Service bulletin: POWER TRAIN. This bulletin supersedes 26\-2046. Reason For Update: update the parts list to change the claim quantity of the C clutch friction plates \(HL3Z\-7B164\-A\), C clutch steel plates \(HL3Z\-7B442\-F\), D clutch steel plates \(HL3Z\-7B442\-D\), add the rear driveshaft flange CV joint\-to\-pinion flange cup bolts and retaining straps \(LK4Z\-4B496\-B\) for Transit, and update the parts description for the transfer case fluids applicable for each vehicle line. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: \* Harsh engagement \* Delayed engagement \* Harsh shift \* Delayed shift \* Illuminated malfunction indicator lamp \(MIL\) with diagnostic trouble codes \(DTC\) P0751, P0752, P0756, P0757, P0761, P0762, P0766, P0767, P0771, P0772, P2700, P2701, P2702, P2703, P2704, P2705, P2707, P2708, P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F6 and/or P07F7 stored in the powertrain control module \(PCM\) or transmission control module \(TCM\). This may be due to PCM software and/or axial movement of the CDF clutch cylinder \(7H351\) sleeve causing hydraulic circuit
- [SSM 54797](/bulletins/11032566.md), 2026-05-08, Service bulletin: POWER TRAIN. Some 2020\-2026 Corsair/Escape, 2021\-2026 Bronco Sport, and 2022\-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph \(100 km/h\), with no relevant diagnostic trouble codes \(DTC\) stored in the powertrain control module \(PCM\). Sometimes, this may be perceived/felt as an engine misfire. This may be due to the torque converter. If Pinpoint Test K: Torque Converter Clutch Operation in Workshop Manual \(WSM\), Section 307\-01 \> Diagnosis and Testing \> Diagnosis by Symptom directs to replace the torque converter, remove and replace the torque converter and torque converter seal. Refer to WSM, Section 307\-01 \> Removal and Installation \> Torque Converter Seal. Remove the main control valve body. Refer to WSM, Section 307\-01 \> Removal and Installation \> Main Control Valve Body. Overhaul and thoroughly clean the main control valve body. Refer to WSM, Section 307\-01 \> Overhaul \> Main Control Valve Body. Reverse the removal procedure to reassemble the transmission. Install the transmission. Refer to WSM, Section 307\-01 \> Installation.
- [25N12](/bulletins/11031778.md), 2026-04-30, Other: POWER TRAIN. Customer Satisfaction Program 25N12 Certain 2020\-2025 Model Year Transit All\-Wheel\-Drive \(AWD\) Vehicles Transfer Case Replacement If Required After Dealer Evaluation

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