I have a 2000 SVT. The car studders or very slightly lunges while going down hill with the cruise control on. I does it worse when the cruise is set at about 50 mph. It clears up a bit at 70 mph. It also does the same shuddering while accelerating up-hill with the AC on. It doesn't sound like the same problem as TH, but would the TH fix also affect this? I sure hope so.
