Check the fuel pump fuse. Often, it's not the pump itself that fails to function, but the power that supplies it. Check in your owner's manual for the location of the fuse box, then find the fuse that corresponds to the fuel pump.
This product would be the best fit for Buick Cascada owners, specifically for the 2019-2018 model years with the 1.6L engine, part number 55585049.
