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I have a 2014 z51 I had to change the battery and now it has no power, I have checked voltage at battery on both sides of fuses and it is 12.6 v the rear fuses have power but the front fuse box has no powers. The doors click from fob but do not unlock. The windows move when your hitting the start button but nothing else, is their anyone who has had this problem and knows what I need to do.
Have you checked the small black wire on the negative terminal of the battery, I have heard that it gets broken easily and if not connected it causes al kinds of havoc.
Also have seen posts where if the buss on the positive terminal is not exactly right or not fully tight it also causes lots of issues. Best to recheck all the connections at the battery.
The front fuse box is fed through the 350 amp fuse on the battery. Pay extra attention to the connection of the big red wire to the fuse buss bar. There is a notch that the red cable sits in to properly align it. The cable ring lug needs to be sitting flush on the buss bar making good electrical contact before being tightened. All connections need to be making good mechanical contact before tightening bolts. The cable / buss clamps need to be pushed down, flat on the battery, and then tightened.
The small black wire is important for correct charging, but would not cause your issue.
No power
