Ive read a lot of great information here about 4WD verses 2WD, but I have a question about limited slip differentials. Now, I know some of you guys want a rig that will tow the QE2 (with ice chest, fuel and toys, of course), but my wife will have to drive the truck the other 350 days a year when were not at the lake. That being said, were considering a 2003 Tahoe 2WD to tow a 4700# rig. The truck has the standard tow package. How do I tell if it also has limited slip differential? Ive researched the specs, but cant tell or I just dont understand. Thanks.