Loud clanking noise upon taking off

Tiny
ESMISTILO
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • 0.8L
  • V8
  • 4WD
  • AUTOMATIC
  • 148,000 MILES
Makes clanking noise while on fwd and reverse. Drive shaft was removed to decrease sound.

Just bought this truck under the promise that only bearings needed to be replaced. Upon acceleration, loud clanking noise occurs even at low speed while either on fwd or reversing. The drive shaft was removed to decrease sound but still intensely loud. I'm getting confused with different ppls opinions as far as diagnostics is concerned n just wanna know what's really going on. Is it the transfer case, the slip yoke, bearings, etc?
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Thursday, August 28th, 2014 AT 5:44 PM

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Tiny
IWS1274
  • MEMBER
There are going to be a lot of opinions on this because its hard to tell when you're looking at the car let alone over Internet forms.

Usually bearing noises get worse the faster you go and don't make to much noise when you're not moving to fast.

It could be the transfer case too. I had the chain pop off my truck's transfer case a few months ago and it was making a lot of clacking noises until I replaced it.

When you said you removed the drive shaft to reduce the noise, do you mean the front one, the rear main shaft, or both. If you have both out and you still have the noise, I would say its the transfer case.

Typical issues for symptoms that you're having usually lead to universal joints. The bearings go in them and the extra play causes some noise.

Unless you're losing a lot of power I doubt its your slip yoke.

Hope this information helps and sorry I can't provide more.
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Thursday, August 28th, 2014 AT 7:25 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Since the noise has decreased by removing the front drive shaft, it leads me to believe it could be coming from the transfer case. However, the front differential could still be making noise. Did the 4wd work properly? Have you checked for excessive play at the transfer output shaft as well as the front pinion input? Does the noise seem to be more from the front of the vehicle or around center?
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Thursday, August 28th, 2014 AT 7:26 PM

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