“Shift shock” usually describes the jolt or jerking feeling that one gets when the transmission of a car switches gears suddenly or violently. Although it may happen in manual or automatic gearboxes, automatic transmissions are more frequently linked to it.
Shift shock in an automatic transmission can result from a number of things, including a broken transmission control module, low transmission fluid levels, worn-out transmission parts, or incorrect adjustment of the transmission bands.
Shift shock can happen in a manual gearbox if the driver enters the next gear too strongly or releases the clutch too rapidly without coordination.
Shift shock on a regular basis might be a sign of underlying problems with the gearbox, which should be fixed by a trained repair to save additional damage and guarantee the car runs smoothly.