Transfer case or front diff noise when in 4A

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Oct 15, 2025 | 10:43 AM

MDK993

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Tuned

Joined: Jun 2020

Posts: 336

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Transfer case or front diff noise when in 4A

Hey All, I recently picked up a 2022 Tremor 3.5l and was playing around with the different drive modes. I noticed when Im in sport mode with 4A engaged there is a deep rumbling sound under harder acceleration. Its not a whining or humming sound or a clunk. This is a new sound to me and may be normal. In my 2018 F150 in 4H it didn't make this sound. Does anyone else experience the same? Is this normal or do I need to have it looked at by the dealer?

Thanks in advance for your help!!