Question about 2001 Chevrolet Silverado 1500

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I have a 89 lwb silverado v6 It will turn over well the starter will turn over but nothing on the belt will spin. I can turn everything on the belt over by hand but when I go to crank it the starter just spins. Please help asap. Family vehicle

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If the lower pulley on the front of the engine does not turn when the starter is engaged then the problem is either that the flywheel is missing teeth (usually very noisy) or the bendix drive in the starter has broken. That is replaceable if you are good with that kind of thing but if the starter is old, it may not be worth the effort. (so just change the starter). There could also be a problem with the front pulley but that is extremely rare.

Posted on Nov 07, 2010

  • 5 more comments 
  • Troy Gorman
    Troy Gorman Nov 07, 2010

    Well its actually my friends truck but he told me he dropped the dust cover and the torque converter can move back and forth by hand? He was told by someone it was his crank shaft. I'm just trying to see if its going to be the whole motor or something cheaper that he can afford.

  • Troy Gorman
    Troy Gorman Nov 07, 2010

    Also the lower pulley can be turned by hand along with everything else on the serptine belt. Belt isnt loose. I'm no mechanic so we will pull the starter and get that checked.

  • Richard Scordino Nov 07, 2010

    Starter may be fine electrically but have the sprague in the bendix drive checked. Also since you have a cover there remove it and see if the flywheel turns with the starter. If it does and the engine does not turn either the flywheel bolts are sheared or the crank is broken (that's very rare)

  • Troy Gorman
    Troy Gorman Nov 07, 2010

    ok ya one of his friends from work told him its his crank shaft which if thats broken how can I turn the motor over by hand?

  • Richard Scordino Nov 07, 2010

    With a snapped crankshaft, you can turn one end and turn the other end because the crank is still supported by the main bearings. But, you can't turn one end and have the other end turning because both halves are not connected. And, like I said, broken cranks are extremely rare except in racemobiles. Even then, the most common failure is when someone uses a cast crank instead of a forged one, then gets into a bit of detonation. I'm betting on the starter drive or the flywheel being bad. You need to look.

  • Troy Gorman
    Troy Gorman Nov 21, 2010

    He just took it to a shop for $350 it was the flywheel cracked in 3 places. Hope this helps others.

  • Richard Scordino Nov 21, 2010

    Glad it's fixed. Seems I was on the right track with the flywheel bolt idea. It always helps to be able to see it though. That kind of problem is easily seen with the cover removed. I'm surprised you did not report any previous noise ...generally as the flywheel begins to fail, it makes a noise that is often mistaken for a bad lifter or engine bearing for at least a week before the center breaks out completely!!



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