A few days ago, my dad's Suburban was running while sitting on a steep driveway with a low level of fuel in the tank, and the fuel pump suddenly cut out. Knowing that fuel pumps can wear out from heat when fuel level is low, we figured that the fuel pump motor had failed.
We dropped the fuel tank to replace the pump, and the new pump had a different wiring harness that required splicing the new connector into the car's electrical lines. We believe that we spliced these lines correctly.
Unfortunately, the fuel pump is not activating when turning the engine over. Normally, the pump can be heard when turning the key to 'On' and we've verified that there is no fuel pressure on the fuel rail. (the old fuel pump was also silent when it stopped running)
This morning we also replaced the fuel pump relay to no avail.
The only other piece of information that may be useful is this: When the pump stopped working initially, (before replacing the fuel pump) the engine would only crank for about a second then stop. After changing out the fuel pump, the engine now turns over without a problem.
Not sure where to go from here. Thanks in advance for your time!