Disconnect the cable from the negative terminal of the battery. Block the rear wheels and set the parking brake. Raise the front of the vehicle and securely support it on jackstands. Remove the engine splash shield. Drain the engine oil and remove the oil filter. Remove the crossmember. Unbolt the exhaust pipes from the 
Exhaust Manifold/catalytic converter assemblies and from the rear portion of the exhaust system. Remove the front portion of the exhaust system. Remove the torque converter cover, then remove the bolts/nuts and lower the oil pan. The bolts at the timing belt end of the engine can be removed with a 1/4-inch drive flex-socket, extension, and ratchet. If the pan is stuck, carefully pry at the tabs on the casting corners. Do not damage the mating surfaces of the pan and block or oil leaks could develop. Use a scraper to remove all traces of old sealant from the block and oil pan. Be careful not to gouge the delicate aluminum surfaces. Clean the mating surfaces with lacquer thinner or acetone. Make sure the threaded bolt holes in the block are clean. Inspect the oil pump pick-up screen assembly for damage and a blocked strainer. Apply a bead of sealant to the mating surface of the oil pan. Install the oil pan within 4 minutes of sealant application. Carefully position the oil pan on the engine block and install the bolts. Follow the correct torque sequence and tighten them a little at a time. After the oil pan-to-block bolts have been tightened, tighten the pan-to-transaxle bolts. The remainder of the installation is the reverse of removal. Be sure to add oil and install a new oil filter. Wait 30 minutes before adding oil. Reconnect the battery. Run the engine and check for oil pressure and leaks.