If the pressure drops significantly when the PCM commands 2nd gear, there is a leak. This can be tested using an external pressure gauge. Circuit (servo assembly or 1-2 accumulator). If you are in limousine mode, you will need to manually enter 2nd gear.Ĭ Изображение: A more serious cause of 1-2 shift failure on the 4L60E is a leak in 2nd gear.
The limp mode for this particular transmission means that you can only access the second, third, and reverse. The biggest symptom of the 4L60E blowing a fuse is entering limp mode. This is a safety feature that allows the vehicle to drive to the transmission shop while preventing damage to the transmission. The transmission shifts to 2nd or 3rd gear (depending on the car make and model) because the car does not have the information needed to safely switch gears. It is known that splines snap where they meet the shell itself. Sunshell-If the sunshell is broken, the 4L60E reverse will be lost. Booster Valve-If the booster valve is bad, you can leave you in a hurry without reversing. There is also a liquid leak in the reverse coating circuit. Many owners who do not have the ability to slip, slow down, or reverse will notice that the "low reverse" clutch is disengaged or worn.
Common 4l60e Transmission Problems The following are some of the most common 4L60E transmission problems.
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