You should raise and support the vehicle. for 1500 series vehicles, remove the oil pan skid plate bolts and skid plate, if equipped. for 2500 series vehicles, loosen the 2 rear oil pan skid plate bolts, remove the 2 front oil pan skid plate bolts and skid plate, if equipped. place a suitable drain pan under the
Oil Filter, remove the oil filter and remove the oil filter adapter.