I have a 97 Jimmy that will not build fuel pressure. If you give it starting fluid it will start and run on the starting fluid but then diewhen you stop feeding it. No pressure at the rail. Other symptoms I have found are that the oil pressure gauge stopped working (Stuck on 20 PSI). The fuel gauge shows just under full and it only has about 1/4 tank. It will not come out of park. All these things worked fine until the fuel issue. I have changed the fuel filter and found that it was pretty well blocked off. I have read that there is a fuel pump run wire under the hood. Is this true? Where would I find it? Any other way to test the pump? I hate to drop the tank and change it out ($300.00) without knowing its bad. Especially since I have the other symptoms. What other types of fuel shutdown safety/security items are on this vehicle (IE. low oil pressure, inertia shutdown)?