Hello,
I am assuming you have the 4.9L inline 6-cylinder engine on this truck.
In order to replace the water pump, the serpentine belt needs to be removed as well as the coolant system needs to be drained.
https://www.2carpros.com/articles/replace-serpentine-belt
Remember to only work on the cooling system when the engine is cool.
https://www.2carpros.com/articles/water-pump-replacement
I have attached diagrams for your reference.
Please let me know if you have any questions.
Thank you.
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Thursday, October 14th, 2021 AT 9:54 PM