GM 3538466 Pan Assembly, Oil (Complete)

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To remove the 4.

To remove and install the oil pan on 4.5L and 4.9L engines, start by disconnecting the negative battery cable and raising the vehicle. Drain the crankcase and remove the torque converter/flywheel covers from the transaxle. On certain models, remove the exhaust crossunder pipe and reposition it. Then, remove the oil pan-to-engine bolts and the oil pan itself. Clean the gasket mounting surfaces and apply a ¼ inch bead of RTV at the rear main bearing cap and front cover to block joints. Install the oil pan and tighten the bolts to 14 ft. lbs. (18 Nm). Reinstall the exhaust crossunder pipe and the torque converter/flywheel covers. Lower the vehicle, fill the crankcase, and reconnect the negative battery cable. For the 4.6L engine, start by removing the engine assembly and placing it on a stand. Drain the engine oil and remove the 13 oil pan bolts to take off the oil pan. If the oil pan gasket is not damaged, it can be reused, but do not remove it from the oil pan groove unless replacement is necessary. Install a new oil pan seal if required, starting by placing the seal into the pan groove and working it in both directions. Position the oil pan to the crankcase and install the 13 retaining bolts, tightening them to 9 ft. lbs. (10 Nm) in the specified sequence. Finally, reinstall the engine assembly and fill the crankcase with oil.