1999 Chevy Silverado no power going to the fule pump

Tiny
BOSSMAN12
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 22,000 MILES
Put in a new fule pump and now there is no power going down to the pump. Have changed realy, check fuse is there any for just the fuel pump or what fuse works the pump, he has even tried running a ground wire stright from the batterie to the fule pump wireing harns. What else is there to do.
Monday, January 11th, 2010 AT 10:46 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum, check the circuits at the fuel pump relay, engine cranking. Voltage for the load/switch side of relay, is hot all the time, ecm B fuse. Voltage for the coil side of relay, comes from the pcm, hot all the time during cranking, if there is an rpm signal. Use a digital multimeter to check for voltage.
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Monday, January 11th, 2010 AT 11:31 AM

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