Sorry for the novel but thought it was best to put down what i have already tried
Background info
Replace the sending unit about a year and a half ago. The seal was rotted and a little torn up but I reused it anyways because there was no place I could get one on a Sunday and wife needed the Envoy. Got an evap code for a small leak ever since but wasn't too concerned since I knew what it was and would replace it when it was convenient.
New info
Long weekend in Canada so I figured it was a good time to replace since my wife had to work. Replace the seal and everything went fine other than me forgeting to put the rear brace in first and having to lower the tank back down partway so I could get the brace in. Buttoned it all up but when I turned the ignition to run I didn't hear the fuel pump. Checked for leaks anyways thinking it might just be quiet. Not sure how loud it is usually in the Envoy because my wife usually drives it. Was a bit concerned so I tried starting it while it was still on stands but would start. Thought it might be the pump having problems priming since there was only a gallon or two in the tank so I put a can of gas in. Still no start.
Pulled front lines to see if there was any fuel in them but they were dry. Dropped tank again thinking I may have pulled on the wiring and disconnected the fuel pump while dropping it partway to put in the rear brace but it was still attached.
Pulled the tank completely out thinking maybe I pulled a wire out of the connector but they were all fine. Turned on ignition and tested the 3 prong connector and it was giving me the readouts that are printed on the fuel pump (5v, -5v, ground) couldn't find any markings on the other tank connector but when I probed the wiring side with the four outputs I got only three readings(5v, -5v, ground) and nothing from the fourth one.
Came in the house to look at the manuals I downloaded from this site to my tablet (thanks again to the person who uploaded it and the person hosting it) Unfortunately I wasn't able to find the info I needed because I can't see the wiring diagrams clearly enough on my tablet and my laptop is in my car that the site took to work.
Can anyone tell me if I should be getting a reading from that fourth pin? I even considered putting 5v to the connections I know are right on the fuel pump just to rule it out as the problem but don't like the idea of sparks and fuel and that still leaves me with the question on what voltage I would apply to that fourth pin.
Any other ideas are welcome.
Background info
Replace the sending unit about a year and a half ago. The seal was rotted and a little torn up but I reused it anyways because there was no place I could get one on a Sunday and wife needed the Envoy. Got an evap code for a small leak ever since but wasn't too concerned since I knew what it was and would replace it when it was convenient.
New info
Long weekend in Canada so I figured it was a good time to replace since my wife had to work. Replace the seal and everything went fine other than me forgeting to put the rear brace in first and having to lower the tank back down partway so I could get the brace in. Buttoned it all up but when I turned the ignition to run I didn't hear the fuel pump. Checked for leaks anyways thinking it might just be quiet. Not sure how loud it is usually in the Envoy because my wife usually drives it. Was a bit concerned so I tried starting it while it was still on stands but would start. Thought it might be the pump having problems priming since there was only a gallon or two in the tank so I put a can of gas in. Still no start.
Pulled front lines to see if there was any fuel in them but they were dry. Dropped tank again thinking I may have pulled on the wiring and disconnected the fuel pump while dropping it partway to put in the rear brace but it was still attached.
Pulled the tank completely out thinking maybe I pulled a wire out of the connector but they were all fine. Turned on ignition and tested the 3 prong connector and it was giving me the readouts that are printed on the fuel pump (5v, -5v, ground) couldn't find any markings on the other tank connector but when I probed the wiring side with the four outputs I got only three readings(5v, -5v, ground) and nothing from the fourth one.
Came in the house to look at the manuals I downloaded from this site to my tablet (thanks again to the person who uploaded it and the person hosting it) Unfortunately I wasn't able to find the info I needed because I can't see the wiring diagrams clearly enough on my tablet and my laptop is in my car that the site took to work.
Can anyone tell me if I should be getting a reading from that fourth pin? I even considered putting 5v to the connections I know are right on the fuel pump just to rule it out as the problem but don't like the idea of sparks and fuel and that still leaves me with the question on what voltage I would apply to that fourth pin.
Any other ideas are welcome.