No, you do not, start by disconnecting the battery and draining the coolant. Here is a video of the job being done in a similar truck and instructions for your vehicle in the images below.
https://youtu.be/zy1CozLgWUQ
Check out the images (below). Please let us know if you need anything else to get the problem fixed.
Images (Click to make bigger)
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Saturday, April 15th, 2023 AT 4:47 PM