Haunted Sonic

[z16monte]

fails to crank, clicks but nothing. Can jump across the starter terminals and it cranks fine. I can also crank it with the scan tool No security light but a bunch of low voltage codes and a BCM voltage not plausible code? I replaced the ignition switch, worked for 2 days, replaced the run/crank relay, worked for an hr, swapped the A/C ani mini run / crank relay started right up. swapped em back, started right up. Battery is good as well. Any thoughts?