Worst noise Ever!!! Help!!!
 

96 Tahoe 4wd and its FUBAR. A noise started coming out if the rear end and progressively got worse until one sunny day when a huge plunk came from the rear. Now at a low speed, once the truck rolls to a certain point there is a metal plunk and it is really loud. reminds me of a locker on a 4 wheel turning with acceleration. is this the rear diff, axle, transfer case??? it is not drivable at all

RE: Worst noise Ever!!! Help!!!
 

Welcome to the forum.

Does the noise occur once per wheel revolution (probably differential problem, e.g. broken ring gear tooth) or once per driveshaft revolution (probably U-joint problem)?

RE: Worst noise Ever!!! Help!!!
 

I agree with 73shark and would add worn sleeve yoke and/or mainshaft spline. Chevy U-joints are infamous for breaking (or at least that's been my experience)

RE: Worst noise Ever!!! Help!!!
 

it does occur once every revolution, and it just so happens that this problem came after i put 24" worth of rim on it. would the weight of the rims have anything to do with this? 305/35r24 Kumhos @ 45lbs ea. and 40-50#wheel, here is a couple of pics

http://img182.imageshack.us/img182/2010/dsc01171ma9.jpg

http://img245.imageshack.us/img245/407/grad1023uq6.jpg

RE: Worst noise Ever!!! Help!!!
 

Every revolution of what? Driveshaft or wheel?

RE: Worst noise Ever!!! Help!!!
 

wheel, rear driver left

RE: Worst noise Ever!!! Help!!!
 

Not sure how the '96 Tahoe parking brake is set up but if it uses a shoe system inside the rotor hat, then it could be something as simple as a broken spring. Another possibility if it's just the driver side is a bad bearing. Otherwise look in the differential.[:'(]

RE: Worst noise Ever!!! Help!!!
 

that helps me alot and i appreciate it, this is my secondary car (project car) so i have not driven it since july of last year and now that i think about it i just replaced the rear shoes that same week. So i feel like i know where to take a look at this truck so i can get her ready for the spring, thanks alot. It must be a bearing, or that rear diff so i will keep you posted when i get it on a lift next week

RE: Worst noise Ever!!! Help!!!
 

Since you just did the rear brakes, I would check to make sure a spring didn't break or come loose before I went too deep into the mechanicals.