Help fast please. Changed starter won't start

[massivespl]

So my starter was going out so we replaced I with a new one. Now we got It all hooked up and it cracks over but won't fire. The battery's are good. I have 5 battery's. It's getting fuel but not so sure about spark.

It's a 2002 Tahoe 5.3 flex fuel. Please help

 

[clandr1]

Perhaps a bad starter? I'd have it bench tested. It's possible it is spinning, but not engaging the flywheel.

 

[Goodinblack]

It cranks over?

 

[Bowtiebug]

Possibly you missed a power wire on starter were battery cable connects , I would double check there first

 

[massivespl]

Power and grounds are all connected tight and clean. It's cracking over great just no spark now and won't start

 

[clandr1]

Check all your fuses. Perhaps you accidentally grounded out a wire somewhere during removal/installation and popped a fuse?

 

[massivespl]

It was the crank sensor positioning connector.

She's running now.