Hello, can someone please help by telling me where my bank 2 sensor 1 would be located on my truck? Thanks in advance!

 

Passenger side exhaust manifold, or, right before the cat on the passenger side.

Of course, that assumes you have at least three sensors......

 

Bank 1 Sensor 1 - Driver side, forward of cat
Bank 2 Sensor 1 - Passenger side, forward of cat
Bank 1 Sensor 2 - Driver side, behind cat
Bank 2 Sensor 2 - Passenger side, behind cat
On 3 sensor designs there will only be one behind the cat, and only one cat.
On 4 sensor designs there will be two cats.
Rear sensors are typically to the side of the trans pan on longitudinally installed engines. I don't care enough to know or comment on where they are on engines incorrectly installed sideways.