Age does not really affect the G80 unit, nor does miles. My '77LT has over 750K on it and no issues with the G80 unit. Fluid and GM additive only a few times in that time, too. It has never had the "lh turn jerk" issue as our '69 C-10 has had since new (even with fluid changes and GM additive in it, when newer).
To me, if the clutches are flaky, it should have similar "feels" in either direction, not just one. Clutches have to slip both times.
When the fluid is changed, with the rear cover removed, there should have been "friction material" in the drained fluid. IF the clutch plates were dying, I suspect.
In another forum, a poster discovered that the aftermarket limited-slip additive did not work as well as the genuine GM PTrac additive did, in relation to the "chattering" on corners.
How long has this situation been going on? When did you first notice it? Have you enlisted the aid of a friend to look and listen to the car, on a quiet and empty large parking lot, to see if the origination of the issue might be determined? Does the "feel" start immediately or after the rh frt wheel makes a revolution or two?
For grins, jack up the rh frt wheel, turn the steering wheel to simulate a rh turn, apply the brakes, then release them, and see if the wheel turns easily or is dragging due to the rh frt fluid line starting to de-laminate internally, keeping pressure on the caliper causing that front brake to drag when the wheel is turned for the rh turn. Jack the wheel under the lower ball joint so the ride height of the body is not affected. Jack the lh frt wheel, similarly, to compare the effort to turn the front wheel.
Just some thoughts,
FS87LT
To me, if the clutches are flaky, it should have similar "feels" in either direction, not just one. Clutches have to slip both times.
When the fluid is changed, with the rear cover removed, there should have been "friction material" in the drained fluid. IF the clutch plates were dying, I suspect.
In another forum, a poster discovered that the aftermarket limited-slip additive did not work as well as the genuine GM PTrac additive did, in relation to the "chattering" on corners.
How long has this situation been going on? When did you first notice it? Have you enlisted the aid of a friend to look and listen to the car, on a quiet and empty large parking lot, to see if the origination of the issue might be determined? Does the "feel" start immediately or after the rh frt wheel makes a revolution or two?
For grins, jack up the rh frt wheel, turn the steering wheel to simulate a rh turn, apply the brakes, then release them, and see if the wheel turns easily or is dragging due to the rh frt fluid line starting to de-laminate internally, keeping pressure on the caliper causing that front brake to drag when the wheel is turned for the rh turn. Jack the wheel under the lower ball joint so the ride height of the body is not affected. Jack the lh frt wheel, similarly, to compare the effort to turn the front wheel.
Just some thoughts,
FS87LT