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1999 yukon sle cranks but won't fire.

(1999 GMC Yukon)
in Potwin, KS on May 17, 2013
my 1999 yukon sle after running the vehicle about an hour and park it when i go to restart it it just cranks and will not fire. let it sit a day and try it it will start. i have changed all plugs cap and rotor fuel filter exhaust (catalitic convertor) and i am getting fuel and spark . i also changed the 02 sensors as well . vehicle sometimes will go for a few days sometimes before it starts doing this again . it seems to have a mind of its own i am at a loss
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Popular Answer
on June 18, 2013
I have some what the same problem on my 96 Yukon SLT. It cranks but just makes a somewhat muffled sound and wont start but only certain days or times during the day, but it recently got worst it wouldn't start at all one day i keep trying hopping it Started when a buddy showed up and told me it was the starter not getting enough charge so i messed with it tighten the wires and it started. I haven't replaced it due to time and money but i can make it start every time by just barely turning the key halve way and letting go as soon i hear the first crank. Its weird but it works and if i turn the key normally and have it cranking it wont start for nothing.Hope this helps you
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