Where is oxygen sensor 2 bank 2 on 2008 sierra 1500?

On a 2008 GMC Sierra 1500, the oxygen sensor 2 bank 2 is located downstream of the catalytic converter on the driver's side of the vehicle. It is positioned in the exhaust system, typically near the rear of the catalytic converter. To access it, you may need to raise the vehicle and possibly remove some heat shields for better visibility.