MY 99 YUKON WILL NOT START AFTER CRANKING

  • Tiny
  • Anonymous
  • 1999 GMC Yukon
  • 17,000 miles

My 99 Yukon will not start after cranking.I do not hear the humming of the pump when I turn the key.I have replaced the pump relay but no start

Saturday, November 24th, 2012 AT 2:51 AM

1 Answer

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,287 posts

Make sure the fuel pressure is within spec and check for a hot blue snapping spark to the plugs. One will be missing. NOTE: Even though you hear the fuel pump. It may not be producing enough pressure to run the engine.

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Saturday, November 24th, 2012 AT 2:53 AM

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