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no spark gmc yukon

  #1  
Old 06-21-2007, 10:10 AM
Thread Starter
Join Date: Jun 2007
Posts: 1
Default no spark gmc yukon

Hi
i need some help. i own a 97 gmc yukon, with a 350 vortec.
i was driving down the road and when it went to shift i heard a bang and then it back fired.
when i got it home it had spark and would turn over but would not start. now that its been home i nolonger have spark adn when it turns over its like when the starter catches to start it it stops.
but i didnt throw a rod. and suggestions?

Thank you
Emily
 
  #2  
Old 06-21-2007, 02:33 PM
Senior Member
Join Date: Feb 2007
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Posts: 2,167
Default RE: no spark gmc yukon

Doesn't sound real good,no....I bet something let go inside...better get the compression checked
 
  #3  
Old 09-06-2007, 10:28 AM
Join Date: Sep 2007
Posts: 28
Default RE: no spark gmc yukon

Sounds like it has jumped time, check the timing chain.I have also seen the EIC's go bad and you get no spark. EIC( electronic ignitioncontrol module )
 
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