My blazer wont turn over at all but all the lights come on inside and out and the radio works and its not the starter already tested it any other ideas what it might be?
chevrolet blazer wont start need help on 1998 Chevrolet Blazer
Try cleaning your battery posts and terminals
It is very possible that either the starter is not grounded to the engine block or the wires going to the starter have a short in them. Another possibility is that the relay is bad which is located under the hood in the fuse panel. Swap the ac relay and the starter relay. They are the same relays which makes this possible. Take your starter out and sand the part that the bolts go through were they touch the block. And if not the case is a voltmeter to check for power going to the starter. If no power follow the wires to make sure there is no short or break in wires.
if the starter is ok then I would check neutral safety switch