To remove the oil pan, first disconnect the cable from the negative battery terminal, then raise the vehicle and support it securely on jackstands. Drain the engine oil and remove the oil filter, followed by the skid plate if equipped, and the front crossmember. For 2010 and earlier 4WD models, remove the front axle assembly; for 2011 and later models, support the front differential with a floor jack, chain it to the jack, remove the front axle support bushing bolts, and lower the front axle while ensuring no vacuum lines or wiring are stretched. Next, remove the oil level dipstick, lower the front stabilizer bar if applicable, and disconnect any hoses or wiring harness attached to the oil pan rail. Remove the oil pan mounting bolts and carefully separate the oil pan from the engine block using a large rubber mallet or a wood block and hammer, avoiding prying to prevent damage. For installation, use a gasket scraper to remove old gasket material and sealant from the pan and engine block, taking care not to gouge surfaces. Clean the mating surfaces and apply RTV sealant to the corner seams where the rear seal retainer and front cover meet the engine block, ensuring to secure the oil pan within 5 minutes of applying the sealant. Position the oil pan against the engine block, install the bolts finger tight, check for gasket shifting, and then tighten the bolts in a spiral pattern starting from the center. The remainder of the installation follows the reverse order of removal. Allow at least 90 minutes for the RTV to dry before refilling the engine with oil and starting it, then check for oil leaks at the oil pan after driving the vehicle.