GM Service Manual Online
For 1990-2009 cars only

The exhaust manifold is a component of the exhaust system used to collect and carry hot exhaust gases away from the engine. Made from cast iron the exhaust manifold combines the exhaust gases from several cylinders. The exhaust manifold is bolted to the cylinder head. A gasket is used between the exhaust manifold and the cylinder head. The left exhaust manifold connects to a crossover pipe that carries the exhaust gases from the front of the engine over the transmission to the right exhaust manifold. The gases are combined in the right manifold and directed to the exhaust resonator pipe. An exhaust manifold seal is used between the right exhaust manifold and the exhaust resonator or the catalytic converter.