99 2 door Tahoe, reverse went out. Is this transmission or could it be in my gears? I've been doing some research on rebuilding the trans. Local shops very from $1100 to $2500. My forward is working fine, that's what puzzles me, and I don't want to pull and rebuild when that's not the problem. I can rev it up to about 3500 rps and it starts to creep backwards but that's it. Any insight, suggestions, or tips will be appreciated.