Question about GMC K3500

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1995 GMC K3500 7.4l engine cranks as soon as battery connected. No key in ignition.

Replaced starter. Problem present before change.

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  • Robert Luther Jan 19, 2013

    Starter has been changed. Is there a relay between the ingition switch and starter?

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You have direct power going to the starter. You have to find the short. Pull ignition fuse and look for burns inside the fuse box. Follow all wires coming off the new starter. Look at all associated ground wires. If that cannot be found, it may be a short in the ignition itself,

Posted on Jan 19, 2013

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Posted on Jan 02, 2017

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SOURCE: ford starter won't disengage even after the ignition is switched

sounds like to me that the ignition is bad and sticking on the start positon

Posted on Jan 04, 2009

fixyathing
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SOURCE: How do I change the starter in a 2000 Toyota Camry LE

i'm sure it's not the starter itself that is the problem, have the stater's solenoid checked...it might be stucked. It's quite a lot of work removing the starter but you can do it if you are willing enough to learn. You just need the right idea and tools to do it. Hope this will help save you bucks!

Posted on Aug 10, 2009

  • 1374 Answers

SOURCE: 2002 GMC Envoy, i put the key in ignition and

Ignition switch and neutral safety switch. Next time it happens wiggle thekeys in the ignition switch and try to restart.If it starts its probably the ignition switch. Then locate neutral safety switch on brake pedal and put meter on B+ wire from switch to starter relay and see if you get B+ on the would -be- crank. Next locate B+ wire from starter relay to starter hook a meter to it and see if you get B+ on the would -be crank.
Where ever B+ is missing is your problem.

Posted on Apr 14, 2010

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Why did it overheat, did you fix the overheating? Are you saying it cranks good but won't start? If it cranks good but won't start, check fuel--spark--compression. Make sure battery has a full charge and battery connections all good. If the battery is down, we can't do any testing. At the starter motor motor, two voltage circuits, one comes from the battery, hot all the time. The other voltage circuit goes hot with key in the crank position is wired through clutch switch. The starter motor grounds through engine block. Any testing at starter make sure tranny is in park or neutral and parking brake is set. You can have the starter motor tested.
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