Oxygen Sensor replacement

[sexyLS]

I searched and gathered some info, but iS there a write-up on how to replace the 02 sensors on the Gen 2 3.9V8? Is there a photo of their location? Can you get to them from the hood, or do the car need to be raised?

 

[1LoudLS]

cant get to them from the top...

look where they should be, you'll see them, if you only see two look further up for the other two...

unplug them, unscrew them, reverse to install the new ones.

 

[LS4me]

I searched and gathered some info, but iS there a write-up on how to replace the 02 sensors on the Gen 2 3.9V8? Is there a photo of their location? Can you get to them from the hood, or do the car need to be raised?

Look in front of the cats, after the exhaust manifold. Can't miss them; one per side. You will need to get under the car.......