First of all, the applicable models include the Yinglong, Junwei, Junyue, New Junyue, GL8, Kaiyue, Lugong, Koluozu, Maiershaoba, MaiershaobaXL, Kepachaqi, Jingcheng, Opel: Andra, etc. Let alone that this 6-speed automatic transmission has a fairly wide range of applications.
The 6AT transmission of General Motors is divided into models such as 6T30E, 6T40E, 6T45E, 6T70E, and 6T75E. The editor will focus on the common faults of the 6T40E transmission (6T30E, 6T40E, and 6T45E have common parts for the transmission). Common problems include not moving when shifting gears, broken wave plates, and control module faults; not moving when shifting into reverse gear, etc. The editor will introduce the common faults and solutions of the 6T40E transmission. When you repair or encounter transmission problems during driving, we hope it can help you.
Fault phenomenon: the gear shift when the frustration is obvious, can not drive at high speed, the engine speed is very high, serious refueling does not go (turn off and wait for a while and can drive briefly);
Cause of failure: the internal clutch plate of the gearbox is broken, and the transmission oil has been seriously blackened when it is checked.
Solution: Replace the improved clutch chuck and replace the strengthened clutch hub;
Fault phenomenon: sudden hanging reverse gear does not go car; Suddenly hang up the forward gear and do not go;
Fault cause: transmission computer control module failure, solenoid valve off stuck fault;
Solution: Repair or replace the solenoid valve or computer control module;
Fault phenomenon: gear shift slip, impact; 1 litre 2 impact, 2 litre 3, 4 litre 5 impact more common;
Fault cause: transmission control module failure, internal clutch hub wear plate fracture;
Solution: Repair or replace the transmission computer, replace the improved wave plate and clutch hub;
Fault phenomenon: slow response, stop impact, starting vehicle is weak;
Failure causes: transmission computer failure, solenoid valve failure, gasket damage and so on;
Solution: Repair the solenoid valve, repair or replace the computer;
Fault phenomenon: the gearbox computer stores the fault code, the engine fault light is on, and the gearbox shift is normal;
Fault cause: The transmission control module is faulty
Fault phenomenon: abnormal noise of the gearbox, humming during driving or abnormal noise of the gearbox;
Failure cause: gearbox internal bearing damage; Abnormal wear of internal parts of transmission; Solution: Replace bearings or related parts;
The General 6T40E transmission has frequent problems and poor quality. The transmission faults can be divided into the following two categories:
1. Internal transmission faults: 35R clutch hub wear and diaphragm breakage (fault occurs at around 100,000 kilometers), which generates large amounts of metal powder after the clutch hub wears and the diaphragm breaks. This metal powder mixes with the transmission fluid, causing severe contamination of the transmission fluid. At this point, the transmission fluid that is drained out is very dark and turbid. An experienced transmission repair technician can accurately determine whether the internal transmission is damaged by observing the degree of contamination of the transmission fluid.
2. Transmission control module failure, computer module failure has a very obvious failure phenomenon, that is, the failure occurs without any warning and belongs to a sudden failure. Check the transmission system fault code at the repair shop, there may be fault codes such as electromagnetic valve XX stuck, and check the transmission oil, which is normal in color. In this case, it is basically the transmission control module that has a problem. About 60% of module failures can be repaired, such as electromagnetic valve detachment and seal failure, which are easily repaired.
The General 6T40E transmission problems are still quite common, and Taizhou Zhiqiao Trading Co., Ltd reminds you to have your transmission repaired at a professional and honest transmission repair center as soon as possible after a transmission failure, to avoid losing more by neglecting it.
