Chevrolet Trailblazer Service Manual page 115

7. Detach the valve rocker arm cover from the cylinder head.
8. Remove and discard the gasket from the valve rocker arm cover.
9. Clean the sealing surfaces as necessary.
To Install:
1. Install a new gasket onto the valve rocker arm cover.
2. Attach the valve rocker arm cover to the cylinder head. Torque the bolts to 106 in-
lb (12 Nm).
3. Attach the positive crankcase ventilation (PCV) hose to the valve rocker arm cover.
4. Install the ignition coils onto the valve rocker arm cover.
5. Connect the spark plug wires to the ignition coils.
6. Attach the engine harness to the engine.
7. Connect the ignition coil harness connector.
8. If necessary, install the intake manifold sight shield to the engine.
Right Side
To Remove:
1. If necessary, remove the intake manifold sight shield from the engine.
2. Remove the A/C compressor hose from the vehicle.
3. Disconnect the ignition coil harness connector.
4. Detach the engine harness from the engine and set aside.
5. Disconnect the spark plug wires from the ignition coils.
6. Remove the ignition coils from the valve rocker arm cover.
7. Detach the vent hose from the valve rocker arm cover.
Right valve rocker arm cover removal and installation