How to change oil pump?

No the motor dosnt need to be removed. Remove: 1. Oil pan 2. Oil pump and the pickup tube/shaft, if equipped 3. Extension shaft and retainer from the pump, if necessary for the 2.2L engine Installation: 1.For the 2.2L engine, if the extension shaft was removed, heat the extension shaft retainer in hot water, then install the shaft and retainer to the oil pump. Be sure the retainer does not crack during installation

the motor has to come out to gain access to the oil pan. sorry Roy