The motor mount insert on a Chevrolet Cavalier is located on the left side of the engine bay. It is secured to the inside of the frame with three 13 mm nuts. When the engine mount insert begins to fail, the engine vibrates excessively. This excess vibration is noticeable from inside the vehicle and becomes more prominent as the engine speed increases. The motor mount insert can not be repaired, so you must replace a faulty one with a new insert.
Raise the front of the vehicle and support it with the jack stands. Apply the parking brake and chock the rear wheels.
Support the engine oil pan with the jack.
Remove the two 15 mm bolts holding the engine to the engine mount.
Remove the three 13 mm bolts holding the engine mount insert to the frame and remove the motor mount.
Install the new motor mount and tighten the three 13 mm bolts in order to secure the mount to the frame.
Reinstall the 15 mm bolts connecting the motor mount to the engine.
Remove the jack, stands, lower the car and test the engine for proper operation.
