Fuel pump cuts on and off when driving over pot holes

Sounds like a bad electrical connection.

Ohh thank you for iam think it may be that. My question is from where ?

Everything was fine until today I changed both of the batteries and the problem started

I would first check the connector to the fuel pump. There is probably a plug that may be loose or corroded.

I just saw your mention of the battery issue. I would make sure the accessory hot wire connection at the battery is good.

Make sure all the battery connections are clean and tight.

I check and went for a test drive and it still did the same thing, the truck has bad suspensions the pothole contact s are hard

But everything was fine but I just took it to get new batteries thats when everything started Idk if that was a factor