2005 Chevy Cavalier Strange Fuel Pump Issue
Unfortunately, my girlfriend's 2005 Cavalier is not well at the moment. I have replaced the fuel pump before on this vehicle. Last week, it quit running. So I ordered a fuel pump from gmpartsdirect.com. It arrived and I went to install it, hooked it all up, and wouldn't you know it, the thing doesn't work. First thing I did was took the old pump and hooked it up to battery power. It worked just fine. So, I swapped the fuel pump relay with the A/C relay (same part number) even though it was clicking when she would turn the key on. Same result. Then I checked for voltage at the rear block where the harness to the fuel pump plugs in. I was getting 12 volts back there. I, unfortunately, was unable to elicit a ground signal from the other pin to the pump. I double checked the connections on the ECM, and nothing out of the ordinary was found. I checked every fuse under the hood and in the panel next to the driver's door. I do not have a service manual showing me where the ground wire goes, but was thinking of pulling up the seat to look at it. Has anyone ever had this problem before? Right now, I wired up a toggle switch for her to flip on in the morning until I can get it to work right. Any and all help appreciated. I know I'm getting 12 volts to the pump, so I guess I need to know where that ground wire goes.
2005 Cavalier 2 DR base model, manual transmission