I have a 95 chevy blazer and the transmission is acting faulty. The fluids are fine i've checked that already. Sometimes the reverse will not go in gear and then following that the drive gears start to go until the car will only rev and not move. I then turn off the car, restart it and then the transmission will fine for a little while until it gradually starts to show the same problems with the transmission. Could it be something less catastrophic than a transmission rebuild?