2021 - hard shift into Drive

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May 28, 2021 | 08:04 PM

Tim Murray

Thread Starter

4wd Low

Joined: Jun 2020

Posts: 13

Likes: 2

From: Conway, AR

2021 - hard shift into Drive

2021 F-350 6.7 - Occasionally when I shift into drive, it’s a hard thump. I can’t make it repeat. It is mostly (maybe always) when it’s completely warmed up.

Dealer kept the truck 3 days only to tell me there are no codes and they can’t make it do it. I told them it happens very sporadically.

I thought they probably had a transmission guy that understands what happens when it goes into gear and what would make it thump like that but….guess not.

Ideas?

May 30, 2021 | 10:56 AM

adllewis42

Junior User

Joined: Apr 2021

Posts: 50

Likes: 17

I had the same thing happen to me on my 2020 for a period of time. I was actually driving home from a day with the dirtbikes and I noticed a hard thump when I was shifting from R to D as I was parking. Didn't think much of it but then, as we drove about an hour down the road, I got a powertrain fault on the dash and in the app. This all happened as we all started to hear about the 4/1 bulletin regarding transmissions so I thought it might be related. I called the dealer, asked them about it, and they said my truck wasn't affected by that. The truck had a couple "clunks" into gear after that so I scheduled an appointment to have it looked at but then it disappeared. No clunks, no codes ... nothing. I cancelled the appointment because, like you found out, if there's no codes and no symptoms, they won't do anything. Fortunately, I haven't experienced anything since. No clue what happened but here's hoping it was just a weird fluke ...