Truck hesitates

With a concern like that has the check engine light come on? The first step you should do is scan the computer for trouble codes. Here is a useful link that may help you:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If you do not have a scan tool to complete the read out you may want to try your local parts store. They will usually do the code read and provide the codes. Check for current and pending codes. Once you have the codes post them on here so we can try and help you figure out what is going on.