I have a 2001 LT Blazer. Today it broke down with the P0758 symptoms, a bad crankshaft position sensor and, torque convertor issues. The crankshaft position sensor was just replaced which solved the erratic RPM gauge but I'm still getting the shift solenoid code and the same problem. It basically LAGS. Press the gas from a start and the rpms rise like normal but the car barely moves. I'm new to the forum and this car has already lasted me 201,000 mi. Pleaseeeee Help.