Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Raise the hood to the servicing position; perform the following:
1. 1.1. Remove the hood hinge bolts (1).
2. 1.2. Raise the hood until vertical.
3. 1.3. Install the hood hinge bolts until snug in the service position (2).
Remove the radiator support. Refer to RADIATOR SUPPORT REPLACEMENT .
Remove the timing chain and camshaft sprocket. Refer to Timing Chain and Sprockets Replacement .
Remove the valve lifters from both cylinder heads. Refer to Valve Lifter Replacement .

Fig 1: Removing Hood Hinge Bolts
Courtesy of GENERAL MOTORS CORP.
Remove the camshaft sensor bolt and sensor.

Fig 2: Removing Camshaft Sensor Bolt & Sensor
Courtesy of GENERAL MOTORS CORP.
Remove the camshaft retainer bolts and retainer.

Fig 3: Removing Camshaft Retainer Bolts & Retainer
Courtesy of GENERAL MOTORS CORP.

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.
Remove the camshaft.
1. 7.1. 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. 7.2. Using the bolts as a handle, carefully rotate and pull the camshaft out of the engine block.
3. 7.3. Remove the three bolts from the camshaft.
If required, clean and inspect the camshaft and bearings. Refer to Camshaft and Bearings Cleaning and Inspection .

Fig 4: Removing Camshaft
Courtesy of GENERAL MOTORS CORP.