Astro Van AWD V6-4.3L VIN X (2003)
Camshaft: Service and Repair
Camshaft Replacement
Removal Procedure
1. Remove the engine cover.
2. Remove the air cleaner assembly.
3. Remove the radiator.
4. Remove the A/C condenser.
5. Remove the radiator grille.
6. Remove the valve lifters.
7. Remove the timing chain and the camshaft sprocket.
8. Remove the balance shaft drive gear.
9. Remove the camshaft.
10. Clean and inspect the camshaft and the bearings.
Installation Procedure
Important: Whenever a new camshaft is installed, do the following procedures:
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Change the engine oil.
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Change the engine oil filter.
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Add GM Engine Oil Supplement GM P/N 1052367 (Canadian P/N 992869) or the equivalent to the engine oil.
1. Install the camshaft into the engine block.
2. Install the balance shaft drive gear.
3. Install the timing chain and camshaft sprocket.
4. Install the valve lifters.
5. Install the A/C condenser.
6. Install the radiator grille.
7. Install the radiator.
8. Fill the engine cooling system.
9. Recharge the air conditioning system.
10. Install the air cleaner assembly.
11. Install the engine cover.