Chevrolet 12616667 Manifold Assembly, Intake

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Yes, for the 2.0L HHR engine, you should also disconnect the negative battery terminal, remove the air filter housing and charge air cooler pipe, and disconnect electrical connectors and wiring harnesses. Detach vacuum hoses, including the brake booster hose, and mark them. Remove the charge air bypass valve solenoid, relieve fuel system pressure, and detach the fuel feed line from the high-pressure fuel pump. Remove the charge air bypass vacuum tank, intake manifold brace, refrigerant line bolt, and high-pressure fuel pump bracket bolt. Then, remove the intake manifold mounting fasteners and detach the manifold from the cylinder head.

Next, remove the intake manifold cover, throttle body, and fuel rail. Disconnect electrical connectors and detach wiring harnesses from the manifold. Drain the coolant and remove the electric coolant pump on 2.0L supercharged models. If applicable, remove the supercharger. Also, disconnect vacuum hoses, including the brake hose, and mark them for reassembly. On 2.0L supercharged models, remove the alternator and engine cooling fan/shroud assembly. Position the air conditioning compressor aside without disconnecting the refrigerant lines. Remove the dipstick tube mounting bolt, set aside the dipstick and knock sensor wiring harness.