GMC, automatic transmission oil change in Zevulun

GMC, automatic transmission oil change in Zevulun.
It is required to change the automatic transmission oil each 90 thousand operational kilometers. Moreover, the oil is changed if the inspection has revealed the following: dark oil color, signs of insufficient oil level, slipping when shifting gears, starting problems and so on. To change the oil, first the drain plug in the automatic transmission crankcase is removed and drained into a container. Once the used fluid is completely drained, fresh oil is poured into the automatic transmission through a funnel.