Before removing L exhaust manifold, they should release the air-conditioning refrigerant and then recover it; they also should take off the cable connected to the negative of the battery. Next, they should disconnect spark plug's wires and their holders as well from the vehicle motor. Lift the vehicle and place it on jack stands firmly and if it has automatic ride control, switch off the air suspension control if not damaged. It is also necessary to apply the penetrating oil on the studs and nuts of the exhaust pipe to manifold interface and let it work for as long as possible before trying to remove the rust. Discharge the air intake duct and the drive belt. To remove the manifold for the right side, it is necessary to detach the bolts and the drive belt tensioner and to remove the electrical connectors of the alternator and the mounting bracket of the alternator. Pop out all the pushpins that are situated around and then dismantle the inner fender well splash shield, next, undo all the manifold mounting bolts you will also find that with the manifold comes the heat shield. For the left side manifold, on the first step, you need to un-bolt and pull off the engine oil dipstick tube and subsequently, the air-conditioning compressor. Once more, take out pushpins and also disconnect the inner fender well splash shield and also the manifold mounting bolts and the exhaust manifold. The component is first installed and during the same process, cracks on the manifold should be checked as well as the bolt threads. The surfaces of mating area of the manifold and cylinder head should be free from dirt and the previous gasket and carbon deposits can be removed by using a gasket scraper. Place the manifold and gasket on the head, screw in the mounting bolts and tighten them progressively by cycles of sixty, thirty and zero use the torque wrench. The remaining installation steps are opposite to the removal sequence which is as follows. Last, engage the engine and look for exhaust gas leakage; if that A/C compressor was taken off, the system must be evacuated, charged, and leak tested.