unless there is noise coming from the timing chain, you should never need to replace it.
there is no timing belt -- only a timing chain that does not need to be replaced
The best time to replace a 2004 Chevy Venture timing chain is when it becomes weak or broken. It is not something that needs replaced routinely.
Your 1999 Chevy blazer doesn't have a timing belt.
never needs to be replaced
The 3.4 litre V6 engine in a 2004 Chevrolet Venture has a timing CHAIN
It has a chain
Chain.
I just found out that it has a timing chain. No maintenance is required.
It does not have a belt, it has a chain.
Timing chains should last the life of the engine and are normally replaced when the engine is rebuilt.
Normally the chain will last the life of the engine and is replaced when the engine is overhauled.
Radiator replacement in the Chevy Venture van requires removing the 6 attaching posts and the hoses that allow for circulation. The gaskets at the hose connection points should also be replaced. Replacement time is 60 to 90 minutes.