How can i reset my whole computer in truck

How can I reset my whole computer...there is a misconception here. There is no "whole computer" or single computer in your truck. You have several processors with a myriad of sensors and inputs providing data to perform tasks. If you're speaking of your specific issues regarding your warning lights, you'll need to diagnose those concerns to find out why the lights are coming on. There is no "reset" to be done, unfortunately. Good luck.