Post by
Zilverado »
https://forums.nicoclub.com/zilverado-u38750.html
Tue Apr 04, 2006 10:06 am
OK, I assume this is not just a case of your lead foot pounding the accelerator, causing the rear tires to loose traction and scream.
Now to be serious.... I agree, this sounds most like a slipping belt issue, but this would definitely be coming from under the hood.
If you are sure about it coming from the rear of the vehicle, you might want to check the u-joints on your drive shaft. These can also make interesting noises.
A good place to try and confirm where the sound is coming from is a road with concrete barriers or walls close to the edge of the lane (bridges or concrete tunnels sometimes work well for this). I find that driving along side the barrier/wall with the windows open sometimes helps to find the general area of the noise. The vehicle sounds are "reflected" by the hard surface beside the vehicle and can more easily be hear inside.
This may sound bizzarre, but it does work. I found this out by accident one day when I drove over a bridge with concrete "jersey" barriers. An annoying brake squeak I was sure was coming from the front of the vehicle could clearly be heard from the rear - - fixed.
Just a thought...