Hi, so I have a 97 z71 truck, one day while driving I lost all power and movement, the tranny had been rebuilt a year prior. I read to check fluid level with vehicle off then while running. The fluid level was very high before started it, then when I checked again it gone gone up even higher. There was no slippage prior to this nor any noises when it happened. Ive checked the fuses, cant find any codes either.