Fuel pump
The proper procedure is to drop the tank. There really should have been an access under the back seat. The pump is a very high quality that typically lasts over 300k miles. Maybe thats why Suzuki didnt give us one. All Kizashi's sold here are to have the fuel tanks replaced via recall. If you havent done this yet , have this done and supply them a Denso brand pump for an 06 Corolla. Same pump