Q: battery change on 2004 GMC Envoy

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Changed the battery now the cluster has gone crazy. Speed-O is inop and fuel guage is erratic. Also A/C is inop, no control from Hvac control head.
(1) Answer
bcm is confused. remove a battery cable again wait 10 seconds and install. check and see if it all came back.