gears not working on D , L , 1, 2. Reverse is working ok
My car has 300000 miles.
My car has an automatic transmission.
Transmission concerns can be tricky to determine. In your case, you could have a problem with the shifter valve body located within the transmission. It controls the flow of fluid to engage or disengage the different clutches that allow for gear changes. It's also possible that you are low on transmission fluid. I would check that first. To have the fault diagnosed properly, I recommend having a certified technician, like one from YourMechanic, inspect the shifting problem in person in order to pinpoint the cause.
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