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I have a '95 1500 350 5.7L GMC Yukon in which it will not CRANK when attempting to start engine. This far, I replaced battery and starter but to only discover the problem still persist..Fuel pump was replaced a couple weeks back so I ruled that factor out as well. I exhausted all my known options and am seeking help. Can anyone advise me of more troubleshoot/diagnosis insight that may help out thanks!

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Check to see if your getting a spark...You can take a spark plug out then attach the wire back on it...Get someone to turn the motor over...Doing it at night works better because you can see it spark..If you don't see spark lighting up then it could be your electronic ignition is bad or your computer module is bad. I'm not sure if your model car has a computer module..If so they are uusually on a SUV under the radio..heater/AC switches close to floor pan in the middle..On cars they are on passenger side panel....If either one of these goes bad...Your motor want start..Also check your fuse box... It will be a high number fuse.bIt might be bad.. You can swap same number fuses to see if ones blown..If it starts change the bad fuse or something else want be working..There is another far fetch thing it could be if your getting spark...Vapor lock...It's when the pressure in your gas tank out pressures your fuel pump..If you have this issue when you loosen your gas tank you will hear air sucking back into your gas will start immediately but the problem will continue until you change out your charcoal filter canister..Hope this helps...Good luck

Posted on Aug 03, 2017


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Posted on Jan 02, 2017

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I would guess starter fuse first, then starter. When you turn key, if you don't hear a click, you should focus your attention on the fuse first and then the starter. If you hear a click, then most likely (80%) its the starter solenoid. try to start the car in neutral to rule out the neutral safety switch...good luck

Posted on Mar 08, 2009

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