Here is your parts breakdown
Replacement parts for General Electric GSD3330C05WW Dishwasher | AppliancePartsPros.com

Looking at your other post, I assume that you replaced the seal.
3/4 of an inch is too much usually it is about 1/4 inch.

When it is draining take a look at the solenoid to make sure it pulls all the way down. If not the wash/drain flapper valve is probably not sealing correctly.
If OK
Pull the spray arm and look down the pump throat while activating the solenoid to see if the flapper is closing properly.
Also check that the seal/nub in the center of the flapper is there.
If OK
Remove the sump cover (Item 506 in Section 2) and check that there is no debris in the sump or something wrapped around the chopper.
Be careful as there is often broken glass in the sump.
If OK
Remove the screened cover at the back of the tub.
Remove and check that the piston and nut (Item 555 in Section 2) is sealing correctly.
It unscrews.
If this valve does not seal correctly, then during drain some of the water goes back into the tub instead of out the drain.

FYI: Theses units should always have water in the sump because if they are run when dry they will destroy the pump seal.