I have a Glacier Bay single-handle kitchen faucet. The water pressure has decreased over time until it now is nonexistent. I have checked the screen and it is clean. I blew out the sprayer line. What is my next step to try to increase water flow?

Shut the water off and then disconnect the supply tubes to the faucet...if the lines are flexible, direct each one into a bucket and turn the water back on...how is water flowing from these supply tubes? If you get good water flow then the cartridge in the faucet is clogged (remove and clean or replace).

If water flows poorly, then check the shutoff valves under the sink...trace issue back from there if needed!

Mark