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1999 GMC Yukon no spark to plugs

Tiny
COLEBANK
  • MEMBER
  • 1999 GMC YUKON
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 260,000 MILES
Power to coil and no spark to plugs, installed new distributor, problem was only once in a while at the begining now no spark at all
Monday, April 6th, 2015 AT 9:34 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Have you checked the crank sensor? Have you checked the ignition module?
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Tuesday, April 7th, 2015 AT 5:08 AM
Tiny
COLEBANK
  • MEMBER
  • 2 POSTS
Spark from coil to distributor , none to plugs, have changed ignition modular and distributor, coil is working, could it still be crank sencor when coil has spark
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Tuesday, April 7th, 2015 AT 5:50 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
I just worked on a Buick a few weeks back that had power to the coil but no spark. It ended up being the crank sensor. I realize these are two different type vehicles, but they are both GM. So is it possible? I would have to say, yes.
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Wednesday, April 8th, 2015 AT 5:04 AM

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