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never needs to be replaced
there is no timing belt -- only a timing chain that does not need to be replaced
unless there is noise coming from the timing chain, you should never need to replace it.
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.
That engine has a timing chain and gears and will probley out last the engine. NO need to replace it.
Check Coloradofans.com or 355nation.net. Both are leading Chevy Colorado message forums.
Timing chains are designed to last the life of the engine and are replaced when the engine is rebuilt.
An oil leak at the timing chain means that the seals are defective and must be replaced.
Normally the chain will last the life of the engine and is replaced when the engine is overhauled.
The '99 Chevy Prizm has a timing chain, not a timing belt, so it does not need to be replaced.
Your question really makes no sense. Normally a timing chain will last the life of the engine as replaced when the engine is rebuilt.
well, I know the 3.5L has a belt, I'm pretty sure that the 4 cyl does as well