Air Injection Hose/Tube: Service and Repair

Secondary Air Injection Pump Hose Replacement

Removal Procedure

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).




2. Disconnect both the air inlet and air outlet hoses from the secondary air injection (AIR) reaction pump.
3. Remove the air inlet and air outlet pipe retaining clip from the frame rail.
4. Lower the vehicle.

Note: It is not necessary to remove the throttle body to remove the intake manifold.

5. Remove the intake manifold. Refer to Intake Manifold Replacement (Service and Repair).
6. Remove the number 6 ignition coil. Refer to Ignition Coil Replacement (Service and Repair).




7. Disconnect the AIR hose from the air box.




8. Disconnect the AIR hose from the solenoid valve.




9. Disconnect the engine coolant temperature (ECT) sensor electrical connector.




10. Remove the bolt and fir-tree fasteners securing the AIR pipe to the cylinder head.




11. Remove the AIR hose assembly by rotating over the top of the engine.

Installation Procedure




1. Install the AIR hose assembly by rotating over the top of the engine.

Caution: Refer to Fastener Caution (Fastener Caution).

Note: Add a drop of GM P/N 12345382 (Canadian P/N 10953489) to the bolt threads.

2. Install the bolt and fir-tree fasteners securing the AIR pipe to the cylinder head. Tighten the bolt until fully seated.




3. Connect the AIR hose to the air box.




4. Connect the AIR hose to the solenoid valve.




5. Connect the ECT sensor electrical connector.
6. Install the intake manifold. Refer to Intake Manifold Replacement (Service and Repair).
7. Install the number 6 ignition coil. Refer to Ignition Coil Replacement (Service and Repair).
8. Raise the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).




9. Connect the air inlet and air outlet pipe retaining clip to the frame rail.
10. Connect both the air inlet and air outlet hoses to the AIR pump.
11. Lower the vehicle.