Where are the O2 sensors on my truck

Hello, your oxygen sensors - 4 of them - are located before and after the catalytic converter on each exhaust pipe from each manifold. I'm concerned about your desire to learn about their location - for what purpose? What are you looking to do? Oxygen sensor location is one of the easiest things to know as even a novice auto repair enthusiast, because if you understand what they are and what they do, you know where they must be located. As a result, I'd strongly suggest you get some professional assistance to ensure your testing is getting the results you desire. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops