Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.

Remove the condenser. Refer to Condenser Replacement in Heating, Ventilation and Air Conditioning.
Remove the valve lifters from both cylinder heads. Refer to Valve Lifter Replacement .

Fig 1: View Of Camshaft Position (CMP) Sensor & Bolt

GM260128

Courtesy of GENERAL MOTORS CORP.

Remove the camshaft sensor bolt and sensor.

Fig 2: View Of Camshaft & Crankshaft Sprockets Timing Marks Aligned

GM156158

Courtesy of GENERAL MOTORS CORP.

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

Fig 3: Camshaft Sprocket, Bolt & Timing Chain

GM63263

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 4: View Of Camshaft Retainer Plate

GM63211

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 5: View Of Bolts installed In Camshaft Front Bolt Holes

GM63212

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 .