Starting issue

Sounds like a bad starter. One in a 389 indrove did the same thing just before it failed.

 

Starter wearing out.

 

Being a 2001 clean all battery connections and grounds at both ends some guys add a extra ground to engine block . After that troubleshoot if problem persists.

 

Jump your starter direct, bypass supply cables using jump cables. Could be your cable or ends are corroded under the insulation.

 

Multimeter between battery positive post electrically furthest from the starter and the positive wire on the solenoid stud going into the starter. Crank the engine and record the voltage drop.

Now repeat the process, measuring between the starter frame (or starter ground if equipped) and the negative battery post on the furthest away battery. Crank engine and read the voltage.

Add your 2 measurements together. If it exceeds 0.7 volts you've got a cable or connection issue (remember we're reading voltage loss, not total voltage). The side with the highest voltage loss is the issue.

If voltage loss is within spec and the supply voltage is good, chances are its a worn starter.