My 2004 Chevy Impala LS won't start. It won't even crank

I recently was in an accident and had to pay 1000 to get a
new right rear knee assembly and new rear brake lines. I
drove it home the night it was done about an hour away
from my house and it started perfectly fine, but the next
morning...nothing. All electronics work, I got the battery
test and it's good, relay for the starter is good, the starter
itself, I took it out and had it tested and it is good also, the
connection also look good. I am at a complete loss. I really
need some advice