timing chain

What is your question?

my check engine light light turned on early last week and it’s starting to make a rattle noise when driving not bad not loud but there. the car has about 215,000 miles on it, what do you think should i fix the timing chain or maybe sell it to a mechanic or something

What makes this problem better or worse?

worse driving

How long has your 2012 GMC Acadia had this problem?

More than a week