Base C6 - Rear End Noise
Thread Starter
Racer
Joined: Dec 2006
Posts: 417
Likes: 40
From: Swansea IL
Base C6 - Rear End Noise
My base model C6 with automatic trans makes a noise in the rear end.
OK , what is a noise.
Here is what is happening. When you are at a complete stop and initially begin to move (fwd or Rwd, it doesn't matter) the car begins to creak. This is in a straight line, no turning. It almost sounds like rubber bushings flexing but others think it is a metallic popping noise. Once you travel 10 ft. it stops, perhaps road noise takes over and you can't hear it any more.
Well, I have done a bunch of internet Covette forum searches and this is what they say:
* Re-torque the rear axle nuts - Did that
* Lube the rear axle splines - took them apart and greased the splines and spline flanges
* Tighten rear stab. bar hardware - did all that
* Change rear diff. lube - drained the rear diff. and installed GM LS gear lube.
The noise is still there. Just out of curiosity, what/where are the rubber mounts for the rear transaxle? Perhaps they need lub or to be retorqued.
I am running out of ideas here. HELP!
Bob
OK , what is a noise.
Here is what is happening. When you are at a complete stop and initially begin to move (fwd or Rwd, it doesn't matter) the car begins to creak. This is in a straight line, no turning. It almost sounds like rubber bushings flexing but others think it is a metallic popping noise. Once you travel 10 ft. it stops, perhaps road noise takes over and you can't hear it any more.
Well, I have done a bunch of internet Covette forum searches and this is what they say:
* Re-torque the rear axle nuts - Did that
* Lube the rear axle splines - took them apart and greased the splines and spline flanges
* Tighten rear stab. bar hardware - did all that
* Change rear diff. lube - drained the rear diff. and installed GM LS gear lube.
The noise is still there. Just out of curiosity, what/where are the rubber mounts for the rear transaxle? Perhaps they need lub or to be retorqued.
I am running out of ideas here. HELP!
Bob
Racer
Joined: Jun 2007
Posts: 343
Likes: 3
From: Spanaway WA
On the GM lube diff fluid was it straight from the bottle or did you add a additive ? I had the same issue and the dealer did the TSB on it again and replaced it w/o the additive which was previously added. the second time and did the mandated figure 8 pattern several times Noise gone now for almost 3 yrs....
