How do I check the transmission fluid of my 98 Isuzu trooper ?

In fact, you can. The large transmission pan has two plugs in the bottom. The higher one is a fill plug. The lower one is a drain plug. The proper procedure for checking the level is: A) Drive vehicle until transmission reaches operating temperature (go for a 30 min drive). B) Park vehicle and apply emergency brake, run gear selector through all gears (engine running, pausing 5 sec.'s in each gear) from Park, down, and back to Park (very important to be in park when checking level). C) Immediately remove the upper fill plug and check level with your finger, it should be just up to the hole, fill as necessary. NOTE: If more than a dribble of fluid drains out when you first open the fill plug then it was overfilled or the procedure was not followed. Use a catch pan under the hole just in case. Filling of the fluid is by means of a small pump and hose, commonly found at auto parts stores.

Its usully at the rear of motor and red in color to check transmision you need the vehicle running pull the stick and wipe off then slide back in pull out and then you will know if you need any transmission fluid if you do you need to put it in the hole where the dipstick goes/ Please rtae my response thank you very much