Would replacing brake booster cause security light to stay on and not start.

What is your question?

Had brake booster replaced on the drove home something was was moving around the cargo area. Pulled over to better place the jack that was moving, the hatch would not open so pressed the button a bunch of times out of frustration. And the security light came on. But started no problem, until the next morning went to start it up... But nothing! Security light stay's on solid and TBC fuse keeps blowing whenever I try and start it.

What makes this problem better or worse?

Nothing at this point.

How long has your 2000 Chevrolet Blazer had this problem?

4 months