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Tahoe makes Clunking noise ???

One of my customers had brought in thier 2000 Tahoe with a towing Pkg.; Make clunking noise taking off from a stop, sound came from rear of vehicle. Seems greasing springs helped but it came back. I...

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Re: Tahoe makes Clunking noise ???

yes there is a TSB on this issue, the problem is a slip stick condition between the yolk and transmission output shaft, we were using a paraffin base lubricant on it part number 123456789 GM number...

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Re: Tahoe makes Clunking noise ???

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Re: Tahoe makes Clunking noise ???

I knew about 99-04-21-004 which addressed this and actually fixed a couple that did this on trucks that were sued for towing; but I heard there was a better fix coming. Was the '01 TSB different than...

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Re: Tahoe makes Clunking noise ???

not sure what that bullitin contains but the one i posted is the latest greatest and will fix it, there were a lot of repairs attempted out there but this is the only one that does the trick that im...

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Re: Tahoe makes Clunking noise ???

Bulletin #99-04-21-004 has been discontinued and the slip yoke bulletin superceeds it.

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Re: Tahoe makes Clunking noise ???

LolLO ok, dugtech thanks for that info. I got it copied so I can call GM for the parts. I'll be ready for this comeback.

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Re: Tahoe makes Clunking noise ???

I have a 99 Tahoe tha started cluking after you stopped. It reminded me of the old motor mount days. If I stop quikly then take off it clunked like the axle was torqueing back. I did try greasing the...

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Re: Tahoe makes Clunking noise ???

Hi, The slip yoke part they are talking about. It's the part that goes into the back of the trans connected to the front of the driveshaft. The rear of the trans has a output center shaft with "Teeth"...

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Re: Tahoe makes Clunking noise ???

Ok, I was really unsure the way I read it the first time that it wasn't something internal. I know what a slip yoke is. But the part I was unsure about is why the yoke would be hanging up in the first...

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Re: Tahoe makes Clunking noise ???

Hi, I'm thinking if it has some play from wear, or dry. When you stop, the rear end lifts a bit. Then, as the drive shaft is stopped. Rear end drops to normal. If the yoke can't move forward, binding....

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Re: Tahoe makes Clunking noise ???

Update: After checking the slip yoke, it was indeed the problem. I had to move it back and forth a few times just to get it out. I cleaned the inside and put some anti sieze grease in the yoke and...

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