My 2008 chevy uplander keeps draining battery

What is your question?

Battery drains if we get let the van sit for more than 1day without starting it. Just got it back from chevy garage. They removes the remote start said hatwas the problem. Said alternator was good. We have eReplaced the battery 3times this summer.

What makes this problem better or worse?

Not starting it ever day

How long has your 2008 Chevrolet Uplander had this problem?

Since we bought it 4 months ago