I have a 95 Tahoe, transfer case is in 2w...locks into park, shifts clean into reverse, drives in reverse, shifts clean into neutral, yet when I go into drive it just stays in neutral. Doesn't feel different, no sound, and when I hit the gas it just sits and revs as if I was still in neutral. I checked the shift linkage and cable, put a new filter and new fluid, changed out shift solenoids A & B, still the same. Even when I put it in 4wd (high or low) there is no change. Any ideas?