Possible reasons for the automatic transmission jerking when switching modes:
*Low Transmission Fluid Level: Check the transmission fluid level and add fluid if necessary.
* Contaminated transmission fluid: Replace transmission fluid and filter.
* Faulty solenoids: The solenoids control the flow of transmission fluid. A failed solenoid can result in improper shifting.
* Faulty Transmission Control Module (TCM): The TCM controls the operation of the transmission. A faulty TCM can cause shifting problems.
* Slipping clutches: The friction linings that transfer power between gears can wear out or burn out. This can lead to slipping and jerking.
* Wear or damage to mechanical components: Gears, shafts, and other mechanical components of the transmission can become worn or damaged, resulting in a jerky shift.
* Electrical System Problems: Electrical problems, such as faulty sensors or wiring, can affect transmission performance.
* Torque converter failure: The torque converter transfers power from the engine to the transmission. A faulty torque converter can cause jerking when changing gears.
What to do:
* Check the transmission fluid level and add fluid if necessary.
* Check the condition of the transmission fluid and replace it if necessary.
* Take the vehicle to a mechanic to have the problem diagnosed and repaired.