Engeman

Hey Everyone, Today I changed the battery on my 2015 Chevy Silverado 5.3L V8, w when tightening the negative I dropped the wrench and arced the battery. I went in to try to start the truck but no dash lights come on, no radio. I turn the key and the warning chime goes off 5 times. I then pulled every fuse and cannot find a broken one. I am looking for help and answers as I can't seem to find this problem anywhere else. I did test the battery with a multimeter but it is coming up 12.67 so should be good. I also Have a few other questions: - How do you check the large fuses and relays? - Other than fuses what could be the problem?