fuel pump

I have a 03 Tahoe i replaced the fuel pump and plug on harness i have full 12 volt power to plug and when i connect pump to battery it spins but when i plug it up no power all my relays and fuses are good pump os brand new please help:banghead:

So, when power and ground hooked to battery, the pump runs? You have power to the pump at the new plug, but is there a good ground?

No when i hook it to plug pump will not work as far as ground no way to ground it plastic tank

No when i hook it to plug pump will not work as far as ground no way to ground it plastic tank
The pump has a ground wire to.
Usually grounded to frame someplace,

Should attach a test light to the f/p circuit of the harness side, not the tank side.....key on lights for two seconds....crank vehicle, it lights as long as you crank.....

If it doesn't light at all....attach one leg of test light to the bat ckt of harness and ground the other end of light to a known good ground....retest....if ok, you have a bad ground circuit....can run a redundant ground, or find the ground(as mentioned, on the chassis somewhere), and clean/repair it....

I have done thar checks out good do u have any idea where the ground on chassis would be cause looked do not see one any where

Are you sure that you spliced in the new connector correctly? If I remember correctly, the directions come with several different options depending on how your truck was originally wired.

Yes i did checked it over and over

Terminal B, grey wire, is power. Terminal C black wire, is ground. Check terminal C with a meter and see if it's grounded. The ground wire is connected to the frame, under the drivers door, next to the body mount. There are two grounds next to each other, the fuel pump ground is the one closest to the main body of the frame. Need to check it at the connector and see if its grounded with a meter.

Ok I'll check it out