I have a 2000 chevy s-10 that won't start. I have replaced the pump. Have power to the white connector at the pump but will only crank. I have replaced the crankshaft sensor, fuel filter, oil pressure switch, fuel regulator. I took the pump out of the tank and hooked it up to the battery and it will run. But as soon as I put every thing back together all it will do is crank. Have a good relay and 20 amp fuse. Does any body know where the GROUND is located for the fuel pump / tank. All answers will be gladly accepted. Thank you