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Old 06-16-2008, 08:19 PM
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Starter nose breaking off

I have a 96 Gmc Yukon-4whl dr-5.7l-4l60 trans. I have put in five starters and every one of them breaks the nose off when I try to start it! I've tried all the shim kits available. I've pulled the inspection cover and the flexplate is a little chewed from the starters breaking but no missing teeth and the teeth are not that bad. Part stores only show one starter model # for this application. It did start a couple of times and runs fine so no its not the motor locked up. I thought it might be a cracked flywheel,but I never had any noises or starting problems before. Any ideas?--Thanks

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Old 06-16-2008, 08:57 PM
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Some may argue this point but it has never failed me.Get a 1/8 inch allen wrench.Remove the dust cover from trans.Put wrench in between the flywheel and the starter shaft flat to flat. The wrench should rock but not roll. Try in 3 places on flywheel in case it is out of round.If wrench will not go in starter is to close.If wrench rolls starter is to far away from flywheel.Hope this helps.
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Old 06-17-2008, 09:46 AM
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Are you sure that you have the correct length bolts? I had this same problem, it turned out that the bolts were bottoming out before the starter was tight, and even though it seemed like it was good the starter would engage a few times, then the alignment would get crooked and bind then the nose broke off.
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