1995 GMC Suburban "grey wire fuel pump" Questions

...make, model and engine size would help. Most late model GM cars it will be the grey or larger grey wire that supplies power to the pump and the purple wire that supplies power to the level

...fuel pump is faulty? I have replaced to fuel pump relay and the engine still turns over fine but does not fire. Checked volyage at relay then grey wire at pump harness. Found the fuel pump was

2002 Chevrolet pump square connector has a black wire,orange wire, grey wire and purple wire. What's does each wire go to? the Fuel Pump?

...grey , black , and of course another black! of course no help from parts stores! One wire will be a common ground.  Depending on how much fuel you have in the tank you should receive a voltage ...

...grey wire at 4 prong connector above rear axle. Is there a fuel pump cut out? Can you test the relay? I have a spare relay and it did nothing either when installed. Where is the ''prime connection'' ...

...grey wire at the connector. If you have the signal then the pump is bad. If no signal then you either popped a fuse, relay. or the PCM failed. Go to mitchell1diy for wiring diagrams and procedures.

grey fuel pump wire, power at the injectors, power to the fuel pump relay orange wire, engine will run if fuel poured into TB. I can jump the pump and it turns on. Fuel is present at the injectors and

...grey, orange and black, purple, and a black wire. The purple goes to purple, grey to gray. The orange and black goes to the small black wire on your car harness and the black goes to the bigger

diagram for the autozone fuel pump was incorrect. I had to use old pump as example. I do remember that grey went to grey but two of the wires were not correct in the directions that came with the pump

...grey wire is the power supply to the pump. Check for power with the pump plugged in. If there is power make sure the ground is good. If that checks out o.k. than the most likely problem is the fuel ...