I cant get the big speakers in the barbie cadillac escalade to work

Which tail light ? Does the stop light ,turn signal work ? Check fuse's LR PARK fuse 10amp or the RR PARK fuse 10amp located in the under hood fuse box .

First check the fuses, one on left side of steering wheel - the other on the left (drivers) side under the hood. Look at the inside of the lids to see what the fuses work on. If fuses are okay, check the ground wires.

broken axle

check the resister under the dash below the glove box its a flat plug with about 6 wires also see how many wires going to it a burned so when you go to the dealer for the resister you can get the connectors

Check this fuse in the box under the hood.

You will have to get into the hood manually to jump the battery and the use the key less entry. Use a long flathead screwdriver and pop the hood latch. To do this simply push the latch horizontally with the screwdriver and the hood will pop open. Jump the battery and you will be able to get into your vehicle. I would then address the reason your battery dies if not replace it.

my cadillac escalade esv 2003 ran out of gas when I put gas back in It now it won't start or even turnover

Your vehicle is wired on the cigatette or aux power outlet.

Check your fuses...the fuse for the OBII is probaly blowed...Or see if the scanner works in another car, to make sure the internal battery on the scanner is good..

Of course it's safe. But, you're causing extra pollution, and it will eventually reduce the life of the engine.