Question about 1984 GMC C1500

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I just replaced my starter but it makes an ugly sound. i tried shims,still makes the sound

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Hello,
There are a couple things that can make starters noisy. Check the flywheel teeth for worn or damaged teeth. Next check the nose cone bushing on the starter. Alot of remanufacturing plants or Shops don't replace bushings. I have encountered this many times and it's fairly easy to do. The nose cone is the aluminum end ov the starter. you remove the solenoid and the two bolts at the back of the starter and the nose cone will come off.once it is off look at the very end of the nose cone and notice the bushing if worn will be oblong in shape. A new repair kit is less than $20.00 from auto zone and includes bushings and brushes and bendix gear.
I know cause I just used one of their kits to rebuild my starter.

Roy

Posted on Nov 16, 2009

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Starter housings are machined from the factory, where they were made. No two housings come out the same, for the machined pad, where the starter bolts to the engine block.
The difference is minimal, granted, but thousandths of an inch count in this area.

It's generally a trial an error situation. This is why there are shim packs. Packs of shims with varying thicknesses.
Rule of Thumb, is generally that the starter drive gear, is 3/32nd's of an inch away from the flywheel.
If you hear a metallic grinding kind of sound, the starter is too close. A thicker shim is needed.

I suspect your problem is the starter drive itself. Definitely sounds like it from your description.
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This rebuilt starter has a bad Bendix drive.

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