Its happend to me as well just turn the wheel left before you roast them and it locks both.
I don't see how changing you fluid is going to fix the worn clutch problem. I hope you didn't just through out $100 dollars on rear end dope. And find out your still making power only to one wheel. The friction modifier is to make the fluid more slippery, it's not to create friction on the clutches.
I went through the same thing 2 years ago. I ended up putting in a Detroit TrueTrac. I haven't had a issue with putting power to both wheels since. Matt
i did notice, that with such good tech support here, you should reward them with some tire carnage pix!!! hint hint. lol
I spent $65 on fluids. The evidence on my driveway says it's working now. Maybe it's a Christmas miracle :shrug:. If that didn't fix it, then oh well, it's $65. That's still cheaper than an oil change on my wife's Trailblazer SS. One call to Summit will fix the problem for good if the fluid change did not.