Hello all.... I'm new to this forum and I have a question that I hope someone can help me with. I have a 1996 Tahoe that was pulling pretty hard to the left while in 4wd (and only in 4wd... drives perfectly in 2wd) and making some nasty grinding/rubbing noises while driving. I was told it was the actuator that was bad.... I replaced that. So.... the grinding is gone, but it still pulls pretty good to the left while driving at highway speeds. It doesn't do it while in town at 25 or so mph. Also, if you mash the gas it goes perfectly straight and no pull. I'm at a loss here.... I've never tinkered with the drive-train on one of these before and I'm not sure where to go from here.

All tires are same size and there is not a low tire causing the pull.

Any help here would be greatly appreciated..........