4L80E Transmission Problems  

The 4L80E Transmission is a fully computer controlled transmission that comes bolted to the higher horsepower and torque trucks.  It is the overdrive successor to the 3L80(better known as the TH400 for most of it’s life).  It is significantly larger than the 4L60E and if you compare the cases side by side it makes the … Read more4L80E Transmission Problems