battery change on 2004 GMC Envoy

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.

Asked by for the 2004 GMC Envoy
1 answer
bcm is confused. remove a battery cable again wait 10 seconds and install. check and see if it all came back.