GM 12603201 Pan Assembly, Oil

Before starting removal of the engine, it is necessary to disarm the electrical connections accompanied by the negative terminal of the battery and then to install an engine support. The next steps are engine mount struts and the exhaust pipe with the catalytic converter, engine oil should also be drained. Need to turn the back of the right front wheel several times with wrench and then take an assistance to lift the car and put it on jackstands, finally, have to take off the right front wheel. You then have to remove the inner fender splash shield and the drivebelt, as well as the oil filter adapter and the starter. Do not detach the ac refrigerant lines while unbolting the ac compressor, remove wiring and connections from oil level sensor, and the wiring harness from the oil pan, and the brace connecting the engine to the transmission. Take off two nuts at the crankshaft pulley/balancer which refers to the engine mount, and then turn loose the nuts at the lower connection of the transmission mount and take off the transmission-to-oil pan brace. It is necessary to lift the engine using engine support fixture and remove the engine mount bracket from the front. On the 3.5L engines, remove the steering shaft pinch bolt at the steering gear, disconnect the tie-rod from the steering knuckle and the right control arm from the subframe and right stabilizer link. Position floor jacks beneath the right and left subframe, unscrew the bolts on the left subframe, unscrew the bolts on the right subframe before lowering the right subframe and lifting the engine. On all engines, loosen and then safely undo the side bolts that holds the cast oil pan down to the main cap supports, finally, un-screw the oil pan-to-block bolts and lose connection of the oil pan from the block, without prying. For installation, clean the pan and remove all old sealant and gasket material and apply the RTV sealant to the gasket area and put the new one piece oil pan gasket in place. Upon the positioning of the oil pan on the block, put the nuts/bolts in corresponding holes and tighten them across to the prescribed torque. Once the pan to block bolts are tightened properly fitted the oil pan side bolts and tighten as required. I resumed and inverted most of the removal steps, as well as tightened subframe bolts, refueled the engine, and took customary tests for leaks after achieving normal working temperature.

After disconnecting the battery, loosen the front wheel lug nuts, raise the vehicle securely on jackstands, drain the engine oil, and remove the oil filter.

Apply a 2 mm bead of RTV sealant to the perimeter of the oil pan, inboard of the bolt holes, and around the oil suction port, allowing the sealant to set before installing the oil pan.

Tighten the bolts in the bottom of the oil pan and install the baffle. Use aligning studs for correct oil pan alignment, apply a bead of oxygen sensor safe ATV sealant to the mating face, and install the oil pan, tightening the bolts finger-tight.

Install the transaxle brace and tighten the bolts to torque.