I need the location of fuel preasure regulator on a 95 suburban K1500. Thanks...

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dies about 10 seconds after crank. If not then it will if you give it gas In gear or not. when giving gas it will back fire then sputter and die. Thottle house clean, new plugs wires. Total tune up. I have checked and rechecked everything right. Now moving on to fuel system. Where is the fuel pressure regulator? I would welcome any suggestions on what it could be. Thanks