I think I figured out that the 2006 2.3 has a timing chain. The one I am looking at 120,000 miles. I have read that some people say the chain should last the life of the engine and others say it needs replaced around 120,000 miles. Does anyone know which is correct?

Thanks!

I highly doubt it would need replacing. I wouldn't even consider it until the truck gets further towards the 200,000 mile mark.