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2020 Ford F-350 SD: transmission slipping

6 of the 189 complaints about the 2020 Ford F-350 SD describe transmission slipping.

owner complaints
6
of this car's complaints
3%
recalls
3
Is there a fix? There are 3 recalls and 55 service bulletins for this area of the car. See below

Transmission slipping by model year

  • 2022
    2
  • 2020
    6
  • 2019
    1
  • 2016
    1
  • 2015
    2
  • 2009
    1
  • 2008
    1
  • 2001
    1

What owners say

Filed Apr 12, 2026 · Transmission · WA

Vehicle experienced sudden, unexpected downshifting and loss of gear engagement while driving. On multiple occasions the transmission slipped out of gear without warning, including while attempting to pull into traffic, creating an immediate life-threatening safety hazard. Vehicle was unable to maintain gear selection and would unexpectedly lose drive power. These failures match the exact defect described in the federal safety agency recall 22V256000

Filed Dec 22, 2024 · Transmission · SC

The transmission slips and hard shifts. I honestly believe the dealership knew and sold it to us knowing since we found out afterwards it's a known issue and in the bulletin about the truck.

Filed Mar 14, 2024 · Transmission · 113,000 miles · MN

The contact owns a 2020 Ford F-350. The contact stated that while driving at various speed, the transmission was slipping while downshifting and upshifting. The contact also stated that there was a hard shift, and the vehicle would lose motive power and lunge forward. The wrench warning light was illuminated. The contact stated that a dealer representative went to the residence to perform a software update however, the failure persisted, and the vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 113,000.

Filed Jun 30, 2023 · Transmission · 25,500 miles · NV

The contact owns a 2020 Ford F-350. The contact stated while driving 60-65 MPH, the transmission was slipping and unintendedly downshifting. The contact stated that upon driving from a complete stop, the vehicle stalled with the transmission stuck in 10th gear, nearly causing a crash. The contact stated that the vehicle responded as needed upon depressing the accelerator pedal a second time. The contact stated that the failure recurred while driving. The power train malfunction warning light was illuminated. The vehicle was taken to the dealer, who informed the contact that the earliest appointment for a diagnostic test would be approximately 6 weeks. The vehicle was not diagnosed nor repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 25,500.

Filed Apr 26, 2023 · Transmission · 109,000 miles · TX

The contact owns a 2020 Ford F-350. The contact stated that while driving at approximately 65 MH, the transmission was slipping while downshifting and upshifting. The contact also stated that after starting the vehicle, the transmission seized after shifting into 4th gear, with the powertrain malfunction warning light illuminated. The contact stated that the vehicle was inoperable. The vehicle had not yet been taken to an independent mechanic or a local dealer. The contact became aware of Customer Satisfaction Program: 21B03 (Transmission - Number One Planetary and Ring Gear Assembly); however, the VIN was not included. The manufacturer was made aware of the failure and advised the contact to file a complaint with the federal safety agency Hotline. The approximate failure mileage was 109,000.

Filed Dec 16, 2022 · Transmission · NY

2020 ford f-350. Consumer writes in regard to transmission issues. The gears were slipping and the engine was revving without stepping on the gas pedal.

Service bulletins that may apply

Related recalls

Power train: automatic transmissionReported April 14, 2022 · 23,165 vehicles affected
What is wrong
Ford Motor Company (Ford) is recalling certain 2020 Super Duty F-250, F-350, F-450, and F-550 vehicles equipped with 6.7L diesel engines. A washer within the vehicle's transmission can disintegrate, causing metallic debris to become lodged in the 'Park' mechanism.
Risk
Debris lodged within the 'Park' mechanism may prevent the vehicle from achieving or holding 'Park,' increasing the risk of a vehicle rollaway and a crash.
Remedy
Dealers will replace a gearset within the transmission, free of charge. Owner notification letters were mailed on April 19, 2023. Owners may contact Ford customer service at 1‑866‑436‑7332. Ford's number for this recall is 22S22.

Recall number 22V256000 · Recall details

Power train: axle assemblyReported July 15, 2021 · 27,604 vehicles affected
What is wrong
Ford Motor Company (Ford) is recalling certain 2020-2021 F-350 Super Duty pickup trucks equipped with 6.7L diesel engines and Dana model 275 rear axles. The rear axle housing may not support the load of the pickup truck and deform, which could result in driveshaft separation.
Risk
Driveshaft separation may result in a loss of drive power, or unintended vehicle movement if the vehicle is in park without the parking brake applied, increasing the risk of a crash.
Remedy
Dealers will inspect the axle housing for deformities, and repair or replace the housing, as necessary, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact Ford customer service at 1‑866‑436‑7332. Ford's number for this recall 21S31.

Recall number 21V536000 · Recall details

Power train: automatic transmission: torque converterReported June 23, 2020 · 13 vehicles affected
What is wrong
Ford Motor Company (Ford) is recalling certain 2020 Super-Duty F-250, F-350, and F-550 diesel pickups. The transmission torque converter damper plate was not tempered, resulting in a brittle damper plate that may fracture and cause the engine to stall or require increased brake pedal effort in order to stop the vehicle.
Risk
An engine stall or requiring additional braking effort to stop the vehicle can increase the risk of a crash.
Remedy
Ford will notify owners, and dealers will replace the transmission assembly, free of charge. This recall began July 6, 2020. Owners may contact Ford customer service at 1‑866‑436‑7332. Ford's number for this recall is 20S33.

Recall number 20V365000 · Recall details

Questions about the 2020 Ford F-350 SD slipping

Is transmission slipping a common problem on the 2020 Ford F-350 SD?

6 of 189 owner complaints about the 2020 Ford F-350 SD (3%) mention transmission slipping. The model year with the most reports is 2020.

Is there a recall or service bulletin for this on the 2020 Ford F-350 SD?

There are 3 recalls and 55 service bulletins for the same area of the car. Check them below with your VIN.

Other symptoms on the 2020 Ford F-350 SD

Fuel pump 19Check engine light 15Loss of power 14Won't shift 10Harsh shifting 9Jerking 9Stalling 9Door locks 8Power steering loss 8Backup camera 6Engine failure 6Hesitation 6Transmission failure 5

All model years of the Ford F-350 SD

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