To remove the oil pan, first 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 support it securely on jackstands. Drain the engine oil and remove the oil filter. Unbolt the exhaust pipes from the upper catalytic converter assemblies and from the rear portion of the exhaust system, then remove the front portion of the exhaust system along with its bracket. Remove the torque converter cover if equipped, then unbolt and lower the oil pan. If the pan is stuck, carefully pry at the tabs on the casting corners without damaging the mating surfaces. For installation, use a scraper to remove all traces of old sealant from the block and oil pan, ensuring not to gouge the soft aluminum surfaces, and clean the mating surfaces with brake system cleaner. Make sure the threaded bolt holes in the block are clean and inspect the oil pump pick-up screen assembly for damage and a blocked strainer. Apply a bead of gray RTV sealant to the mating surface of the oil pan and install it within 4 minutes of sealant application. Carefully position the oil pan on the engine block and install the bolts, tightening them gradually in a criss-cross pattern to the specified torque. After tightening the oil pan-to-block bolts, also tighten the pan-to-trans axle bolts. The remainder of the installation follows the reverse order of removal, ensuring to add oil and install a new oil filler. Wait 30 minutes to allow the sealant to cure before adding oil, then reconnect the battery and run the engine to check for oil pressure and leaks.