Removal Procedure

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Fig 1: Identifying Hood Hinge Normal And Service Position Bolt Holes

Courtesy of GENERAL MOTORS CORP.

Raise the hood to the service position, perform the following:
- Remove the hood hinge bolts (1).
- Raise the hood until vertical.
- Install the hood hinge bolts until snug in the service position (2).
Remove the radiator support. Refer to RADIATOR SUPPORT REPLACEMENT in Body Front End.
Remove the front cover. Refer to Engine Front Cover Replacement .
Remove the valve lifters. Refer to Valve Lifter Replacement .

Fig 2: View Of Camshaft Position (CMP) Sensor & Bolt

Courtesy of GENERAL MOTORS CORP.

Remove the camshaft sensor bolt and sensor.

Fig 3: View Of Camshaft & Crankshaft Sprockets Timing Marks Aligned

Courtesy of GENERAL MOTORS CORP.

Rotate the crankshaft until the timing marks on the crankshaft and camshaft sprockets are aligned.

Fig 4: Camshaft Sprocket, Bolt & Timing Chain

Courtesy of GENERAL MOTORS CORP.

Remove the camshaft sprocket bolts.

NOTE: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.

Remove the camshaft sprocket and reposition the timing chain.

Fig 5: View Of Camshaft Retainer Plate

Courtesy of GENERAL MOTORS CORP.

Remove the camshaft retainer bolts and retainer.

NOTE: All camshaft journals are the same diameter, so care must be used in removing or installing the camshaft to avoid damage to the camshaft bearings.

Fig 6: View Of Bolts installed In Camshaft Front Bolt Holes

Courtesy of GENERAL MOTORS CORP.

Remove the camshaft.
1. Install three M8-1.25 x 100 mm (M8-1.25 x 4.0 in) bolts to the bolt holes in the front of the camshaft.
2. Using the bolts as a handle, carefully rotate and pull the camshaft out of the engine block.
3. Remove the three bolts from the camshaft.
Clean and inspect the camshaft and bearings. Refer to Camshaft and Bearings Cleaning and Inspection in Engine Mechanical - 4.8 L, 5.3 L, and 6.0 L Unit Repair.