What are some common problems for a 4160E transmission?

With a 4L60E transmission, users may experience problems with the transmission being slow or having no reverse or third or fourth gear. Other problems include sudden grinding noises with seemingly no warning and no torque converter clutch lockup.

The transmission may sometimes experience a loud and grating noise when it is in fourth gear, and the vehicle may handle as if the brakes are left on. In such situations, the transmission should be replaced. Sometimes drivers may experience a general gradual performance degradation that may be caused by leaking boost valves or generally leaky seals across the device. Replacing the transmission solves these issues as well.