The transmission solenoids are located under the side cover of the transmission. The side cover comes off with the transmission still in the car, but it's quite a job, especially if you don't have a lift.
Injuries or conditions that affect the chest wall -- the rib cage and associated muscles -- are another common cause of pleuritic chest pain. Chest muscle strain due to strenuous exercise may cause pain experienced primarily with deep breathing. Vigorous activity can also lead to costochondritis, a condition involving inflammation of the connective tissues of the rib cage.
Inflammation of the lining of the lungs (pleuritis) causes sharp chest pain, which is aggravated by deep breathing and coughing. This condition is called pleurisy. Patients often notice a shortness of breath, in part due to their shallow breathing to minimize chest pain.