I'm putting this here because of the similarity of this drive train to
> the Blazers. This 96 Bravada has a bad shake pulling out that feels
> like a U joint coming apart. I have it at my Uncle's service station
> for them to try to straighten out. We have thought this out and are
> trying to not just throw parts at it, but so far it's not paying off. > SYMPTOMS
> 1. Bad shake when you pull out, classic clunking like bad U joint. Not
> nearly as bad when the car is cold or has been sitting a while. Gets
> better as you put on speed. It does not get better or worse if you
> swerve form one lane to the other to see if wheel bearing is out.
> 2. Chirping sound like a dry bearing will make, again after warm up.
> 3. Sound like a fan blade hitting something. This is not all the time.
> These symptoms go away like you turned off a switch if you let off the
> gas, will sometimes come back not so bad right before the car stops
> under braking. They all but disappear in turns even under acceleration
> in turns. Not present in reverse even under acceleration. At 60 MPH it
> settled down to a dull rumble.
> So far we have done the following, none of these thing helped much if > at all.
> 1. Changed left front axle.
> 2. Changed both motor mounts, (both were broken).
> 3. Replaced transfer case fluid with AutoTrak fluid from dealer.
> 4. Removed and inspected rear drive shaft, no problem found, greased
> all U jonts and reinstalled.
> 5. Attempted to remove fornt U join but couldn't because of stripped > bolt.
> 6. Inspected rear cross member tranny mount found it in good
> condition.
> 7. Checked lug nuts, tire pressure confirmed all tires are same size > and brand.
> 8. Tomorrow the plan is to burn off the bolt and pull front drive
> shaft and inspect it well. We will try to drive the car with the front
> shaft out and see what happens.
> Help me out guys, what the heck is going on here? I have $325 in
> chasing this now. I trust these guys completely as mechanics, my
> neighbor is a retired Olds tech with 40 years of service, and hundreds
> of hours working on these cars up til 2002, and he has agreed with
> everything we've done so far. We don't know what to try next if the
> front shaft is OK. If the car runs smoothly with the shaft out where
> do we go from there? Is it OK to run the car with the shaft out? (I'll
> check that with my neighbor in the morning before we run it). Any help
> or suggestion you can offer will be greatly appreciated. Larry M. >
> --
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