1999 GMC Yukon Fuel pump or relay?

Tiny
WALLYDUDE
  • MEMBER
  • 1999 GMC YUKON
  • V8
  • 2WD
  • AUTOMATIC
  • 154,000 MILES
Recently a few times in the last few months it will turn over but just not start, as though no gas is getting through.

Triple A guy just pounded on gas tank and it started right up. Two weeks later same problem, so I pounded on tank. Didn't work until I asked someone to turn key while I pounded on tank, then started right up.

So what's going on? Is the realy going bad? Pump?
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Saturday, January 3rd, 2009 AT 9:44 PM

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Tiny
BUDDYCRAIGG
  • EXPERT
Pump in the tank is failing.
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Saturday, January 3rd, 2009 AT 10:07 PM

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