Its easier to access it from the top than the bottom!
It's on the passenger side of the engine at the rear. You need to access it from underneath the vehicle. (unless you have really small hands!!)
It's located on the engine side of the radiator. Lower passenger side. You have to get under the car to access it though. You can't see it from the top.
Yes, there is a fuse for the interior lights on a 2000 Pontiac Montana. The fuse box is located to the far right of the dash on the passenger side. Open the passenger door to access it.
It is located in the front of the engine, above the oil filter, next to the starter. Your going to have to remove the starter for easier access to the sensor.
It's located inside the fuel tank. You will have to drop the tank to gain access to the pump. I suggest picking up a Haynes or Chilton manual for the car and following their instructions.
It's under the hood, on the passenger side. There is a structural member that runs diagonally from the front center to the firewall that has to be removed to access it.
It is located on the passenger side of the car. It's easier to access from underneath the car. It's a bit hard to fit an oil filter tool in there so get a good grip or wear gloves. I find it easiest to stand on the passanger side, then reach back behind the engine. As long as you do not have big arms, you can reach back very easy.
I can't tell you precisely, but you'll see it when you pull the inside door panel off to access it.
Not positive on your model, but open the driver's side door and look at the end of the dashboard. There should be a little access panel.
Those bulbs are very common. You should be able to find them at Auto Zone/Checker etc. There are a few of them behind that PONTIAC name. You access them from inside the trunk lid.
The power sliding door fuse is located in the passenger side fuse panel to the right of the glove box. You need to open the passenger door, remove the access panel on the side of the dash and consult the layout map on the panel as to which fuse is associated.
There are two places, that I know of, where fuses are located. One is the fuse panel which on my older model, is at the left side of the dash. You have to open the driver's door to access it. The other place is under the hood on the driver's side fender well.