Replaced dishwasher and ran a test cycle with positive results (water in the unit while running). Then the HOT water in the kitchen sink was suddenly very low. We then ran a full load (successfully), and now both hot and cold are very low pressure. I flushed the pipe going to the dishwasher, and it worked fine. The pipe going to the dishwasher is THE ONLY pipe that has high water pressure. Even when not connected to the dishwasher. All of the rest of the pipes going to the sink faucet it's self have no pressure.

Remove aerator on kitchen faucet. See what flow you have.