GMC Repair: fuel pump wireing, fues, battery voltage

Question
i'm working on a 97 jimmy i dont have power back to the fuel pump the relay is new fues is new cleaned ground an still nothing if you have a wiring diagrm that will help tons thanks

Answer
The fuel pump receives only 2 seconds of battery voltage thru the relay when you first turn ON the ignition key.

Once the engine starts the RELAY is BY-PASSED and battery voltage is fed to the pump directly from the vehicles computer.


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