Check connections, starting at the battery. Disconnect and tuck away the negative cable before removing any other cable connections. Terminals clean and tight, clamps not broken.

Then the lug on the side of the underhood fuse block near the front. Clean and tight, should be 2 cables there, from the battery positive and to the starter.

Then the lug on the starter.

Tighten the four 7mm bolts inside the underhood fuse block. These need to be really tight. Seat all fuses and relays securely.