No power to gray wire at fuel tank - 2005 Pontiac G6

The gray wire is fuel pump battery positive voltage supply , not red wire. Red is not red ,it's pink with a black trace . Power for fuel tank sending unit.
https://www.youtube.com/watch?v=McnXLcJNVfI&t=3s

How many wire's or the connector ? One connector at the fuel tank connection . 4 wire's - two for the fuel pump - gray is battery power an black is ground for the fuel pump . Two more wire's - fuel level sending unit . purple & orange with black trace . One more connector - this is for the fuel tank pressure sensor , has three wire's , this one has nothing to do with the fuel pump . This is for emission testing only

Buick cars don't have them. From the fuel pump relay under the hood, the pump's power wire goes directly to the gas tank and the fuel pump connector.

If your pump is not turning on, check for power on the gray wire at the gas tank electrical connector while someone cranks the engine over. The pump wire, I think it is gray, should have battery voltage when the engine is cranking. If it does, you probably need a new fuel pump. Dropping the gas tank is no fun, it is a dirty job, not real difficult, just not a fun relaxing afternoon.

ok if the truck went through water some water may have got on the distributor wires i dont think its a fuel pump problem but if you could check to see if its firing at the spark plugs the check the fuel pressure and if you have some wd/40 spray the spark plug wires and the distributor cap and try starting the truck

Gray is the B+ power for fuel pump , black is ground for the fuel pump ! The other two wires are for the fuel level sending unit .( gas gauge )

It should be four wires. Gray is power to the pump, Purple is gauge control, and two black wires that are ground. You should have battery voltage on the gray for 3 sec. after the key is turned on. Did you replace the plug-in to the pump when you replaced the pump? The pumps usually come with new plugs

you say you replaced the fuse, but does the fuse have power? the gray wire at pump should have power when cranking, or for 2 seconds when turning key on. At fuel pump relay, put power onto gray wire, the pump should run if the wiring is good. if it doenst run then ck for power at fuse while power is on gray wire.

It will be a gray wire larger than the others in the connector other than the ground wire which is black.

hi ted , the grey wire at the fuel pump goes to the fuel pump relay , and the relay gets its power from the ECM B fuse 20 amps , located in the underhood fuse relay center , when you tested for power , how did you do the test ? a test light at the grey wire while someone was cranking the motor ? i'm looking for a fix ya vote , so if finding your fuse doesn't solve your problem comment back before voting and i will help you , thanks .

There is no fuel reset button on this van.

To test the circuit before removing the tank, you will need a voltmeter or cheap test light. Disconnect the connector at the fuel tank. On the harness side, locate the gray wire (fuel pump wire). Connect the test light to a good ground. Have a helper crank the engine over. While engine is cranking, the gray wire should have power. If it does, and the pump is not turning on, then the pump must be bad and need replacing. If there is no power on the gray wire with engine cranking, the circuit is the problem, not the pump. Go back and find the fuel pump fuse in the junction block (the fuse relay block where the fuel pump relay is). Check the fuse, also check if there is power going to the fuse. This fuse should be hot at all times. The circuit goes from battery to pump fuse to fuel pump relay to gas tank and the fuel pump.