Grand Prix V8-5.3L (2007)
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Valve lash is net build, no valve adjustment is required.
1. Lubricate the valve rocker arm and pushrod with clean engine oil.
2. Lubricate the flange of the valve rocker arm bolt with clean engine oil.
3. Install the valve rocker arm pivot support.
Important: Make sure that the pushrod seats properly to the valve lifter socket.
4. Install the pushrod.
Important: Ensure that the pushrod seat properly to the ends of the rocker arm. DO NOT tighten the rocker arm bolt at this time.
5. Install the rocker arm and bolt.
6. Rotate the crankshaft until the number one piston is at top dead center (TDC) of the compression stroke. In this position, cylinder number one
rocker arms will be off lobe lift, and the crankshaft sprocket key will be at the 1:30 position.
The engine firing order is 1, 8, 7, 2, 6, 5, 4, 3.
Cylinders 1, 3, 5, and 7 are the left bank.
Cylinder 2, 4, 6, and 8 are the right bank.
Notice: Refer to Fastener Notice in Service Precautions.
7. With the engine in the number one firing position, tighten the following valve rocker arm bolts:
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Tighten cylinders 1, 2, 7, and 8 exhaust valve rocker arm bolts to 30 N.m (22 lb ft).
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Tighten cylinders 1, 3, 4, and 5 intake valve rocker arm bolts to 30 N.m (22 lb ft).
8. Rotate the crankshaft 360 degrees.
