I'll try, ???., clear any possible trouble codes from computer, check all fuses, if computer has any codes stored, retrieve them first. this may direct you in the right direction as to what your problem is. a parts store can do that for you if you can get it there. if not, try removing the negative battery terminal, for a few minutes, give 5 min., reinstall, then try to start. any luck ? you say your 'slip' light stays on , what sensor sends this info, wheel sensor ??? front or rear ?? why would this prevent your engine from running ? this would be rediculous ! maybe its something else, fuel pump ? sure your connection to new fuel pump is good? try this, with out starting engine, (have a helper) turn on key, donot start, have a helper do that, you go back to tank, (intank pump) listen for a hum, which only last for 2-3 seconds, upon your helper turning key to on position. listen closely, do this a couple times, do you hear a humming ? if yes, pump is working, if not, well there ya go. next, check fuel pump relay, fuse, most found in the engine compartmt. see if any of this helps, good luck, patience is a virtue !!!