Chevrolet 24505129 Exhaust Manifold

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1. Remove the cooling fan for access. 2. Take out the mass airflow sensor, air duct, and crankcase ventilation pipe if necessary. 3. Remove the engine mount struts and acoustic cover on 1996 and later models. 4. Unbolt the manifold from the crossover pipe. 5. Remove the dipstick tube hold-down nut. 6. Detach the spark plug wires from the front spark plugs. 7. Take off the exhaust manifold heat shield if equipped. 8. Finally, unbolt and remove the exhaust manifold.

1. Disconnect the battery. 2. Remove the air cleaner assembly. 3. Disconnect the hot-air pipe to the manifold. 4. Remove the hot-air shroud around the manifold. 5. Raise the car and support it firmly on jack stands. 6. Bend back the metal retainers around each manifold bolt head. 7. Remove each of the bolts. 8. Disconnect the exhaust pipe from the manifold, using penetrating oil if the fasteners are 'frozen' in place. 9. Remove the flywheel lower cover and the starter brace, wiring, and starter. 10. Remove the exhaust manifold from under the car.

Unplug the oxygen sensor lead, then remove the air cleaner and air duct assembly, followed by the air-inlet resonator from the upper tie bar and the lower air duct.

Start the engine and check for exhaust leaks.

For installation, clean all bolt and stud threads, using a wire brush for manifold mounting studs and a tap for cylinder head bolt holes.

The first step is to disconnect the negative battery cable, ensuring that the Theftlock audio system's lockout feature is disabled if applicable.

Disconnect the coolant bypass tube if necessary.

Disconnect the negative battery cable from the battery, ensuring that the lockout feature of the Theftlock audio system is turned off if equipped.