Do you have to program a BCM or is that just the ECM

Grinding in rear end and rear wheels have slack when I let off of the break

The engine light comes on and won't go off is there a fuse for the I guess the front display worthy you know mileage and all that is is there some kind of fuse somewhere for that

Trunk won't open with key or the window

Recently I locked my keys in this vehicle overnight with keys in the ignition not completely turned off. The next day, after replacing battery, the ignition switch would turn the accessories on but wo…