No power to fuel pump on 2001 gmc sonoma i put icm new fuel pump still no power

Asked by Jun 21, 2017 at 05:25 PM about the 2001 GMC Sonoma SLS Extended Cab Short Bed 2WD

Question type: Maintenance & Repair

2 Answers

33,985

wher does the power/12 volts stop?before or after the relay??

33,985

a Fuel Pump relay controled by the ECM "B" fuse and the ECM/PCM itself. The relay is in the underhood relay box. 30 will be hot all the time 85 is your key. It will become hot for 3 seconds when the key is initially put on. It will stay alive when the key is in the run or on positionb if the ECM/PCM is working correctly. If everything there is okay then its a ground problem at G102 or G402 or Wiring issue to the pump Good Luck

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