Chevrolet Lumina intermittently can not travel

A mileage over 250,000 km, configuration 3. 8L engine and 4T60E automatic transmission Chevrolet Lumina. Users report: re-start the vehicle in the parking (such as traffic lights) process sometimes suspended phenomenon, then turn off the engine if the ECU Chip Tunning re-start the vehicle, the fault disappears.
Troubleshooting: intermittent due to a fault, and therefore more likely to judge an electrical fault. Automatic transmission control system for self-diagnosis, no fault codes. Read the data and found no anomalies. Check the external condition of the automatic transmission, eobd2 had broken down and repaired, estimated failure related to poor performance and mechanical parts.
The tandem two-way automatic transmission planetary gear mechanism, through five clutches, two brakes and three-way clutch to complete the four forward gears and one reverse gear. Parking and then start the process of using a low gear. Reverse reverse brake actuator includes input clutch and input-way clutch. Actuator includes a file input clutch, enter the one-way clutch, brake and low forward gear one-way clutch. 2 files, including two clutch transmission components, clutch input, enter a one-way clutch, brake and low forward gear one-way clutch. Combined transmission principle and fault symptoms were analyzed as follows:
1.pump, torque converter, active links, the sun wheel main gear and other components normally.
2.reverse brake and reverse servo only works when the reverse gear, regardless of fault.
3.forward brake and the forward gears in a file server, two files are functioning, and fault related.
4.Enter the clutch in both reverse and forward gears work, regardless of fault.
5.low one-way clutch in first gear, second gear all work and fault related.
Focus on checking forward brake, low one-way clutch, clutch input. Remove the automatic transmission decomposition checked and found the input clutch slip. Replace the input clutch piston seal ring (3), sump filter, refitted automatic transmission. Test, failure to completely ruled out.
For planetary gear-type automatic transmission repair work, to understand the logic and drive the implementation of Airbag Reset Tools the transmission line is a very important element, which can help us to find the exact cause of the malfunction and components, troubleshooting.