How to check gear oil level in Isuzu trooper 2001

SOURCE: check or fill tranny

If you are under the car, find the oil drain pan and look toward the rear of the car.  There you will see the transmission pan that has two bolts in it.  On will be higher than the other.  The higher one is used to check/fill the transmission.  The fluid should be filled high enough that it is just starting to come out of higher hole when the car is on level ground, that is when it is full.  You need to make sure that you run the car and move it through the gears and you should be able to get a little more fluid in there.  Obviously the lower bolt is for draining the pan.  Hope this helps!