Cobalt No Crank No Start When Turning Key Fix

Car would start and stall out right away. Maf engine light came on. We thought starter since it looked really old and the one wire between the alternator and starter was corroded and almost broken.

We replaced the starter and it cranked and started and stalled out. But then the car would not crank or anything when turning the key. We checked all the connections and made sure the starter worked. We eventually narrowed it down to a wire and the fuse box somewhere. We checked relays and the Crank Relay was corroded. So we pulled it out and made sure it was good. Checked all the contacts and only the ground was not getting any volts or omhs going through.

Then we ripped the fuse box apart and saw the ground wire in that spot and followed it through all the loom and tape to the ground on the tranny. We took the ground off and found all the wires corroded and falling off which made horrible contact.

We cleaned the contact and cut the wires and reconnected it and made it all shiny and new, then we tested  the connection from the ground to the positive post on the fuse box and we got full 13 volts.