i'd have to make sure battery has a full charge and all battery connections are good and
clean, all ends, not just at the battery. next, i'd probably bypass everything just to see if
starter motor will crank the engine. If you try that, make sure transmission is in park or
neutral and parking brake is set. make sure vehicle can't move. if starter relay is
removeable, remove it, use jumper wire at two cavities for switch side of relay, it should
crank. Another way is to short the two terminals at the starter motor, itself. you could use a
long shank screwdriver or remote starter button. if you get no reaction, you may to remove
starter motor and test it. one way, hook up jumper cables properly from starter motor to
battery, at the least, it should kick out drive gear and spin. Some of the national brand auto
stores will test starter for you, if you think that might be the issue?