Express 1/2 Ton Van V6-4.3L VIN W (1999)
13. Remove the balance shaft drive gear.
14. Remove the camshaft.
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 or equivalent to the engine oil.
Install the camshaft into the engine block.
