Remove the case side cover before you replace the Oil Pump. With a flat-bladed tool, disconnect the electric connectors from the solenoid valves 315a, 315b, 322, 334, and 440, along with the tfp manual valve position switch 395 and the temperature sensor 391, and make sure you don't stir or take out bolt 205. After that, take out the Oil Pump bolts (206, 207) and take the Oil Pump (200) off the Valve Body (300) to look at it. Afterwards, put the Oil Pump (200) back onto the Valve Body (300) and tighten both Oil Pump bolts, with after you have reconnected the electrical connectors to the solenoid valves (315A, 315B, 322, 334, and 440), the tfp manual valve position switch (395), and the temperature sensor (391), set the case side cover onto the transmission. It is a good idea to reset the transmission adaptive pressure (TAP) information, because using a scan tool erases saved values in all the cells and makes the ecm, pcm, or tcm relearn tap values.